Ford Fiesta Quiz
Body and Paint

Wipers and Washers - Diagnosis and Testing

In this manual: Body and Paint
Service Information — 27Suspension — 48Transmission — 9Brake System — 52Steering — 21Engine — 140Manual Transmission, Clutch, Transfer Case and Power Transfer Unit — 48Exhaust System — 6Fuel System — 21Climate Control System — 58Instrumentation and Warning Systems — 26Battery and Charging System — 20Infotainment Systems — 41Lighting — 29Power Distribution — 11Electronic Function Group — 30Body and Paint — 275Frame and Mounting — 3
~50min read
1special tools

DTC Chart: BCM

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).


DTC Chart


Trouble Code Description Action
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation DIAGNOSE the symptom. REFER to the Wipers and Washers Symptom Chart in this section.
B1051:92 Front Washer Switch: Inoperative or Incorrect Operation
  • If the windshield washer is always on, INSTALL a new wiper/washer switch.
    REFER to: Multifunction Switch on Steering Column, Right (211-05 Steering Column Switches).
  • If the windshield washer does not operate, GO to Pinpoint Test H.
B1052:92 Rear Washer Switch: Inoperative or Incorrect Operation
  • If the rear washer is always on, INSTALL a new wiper/washer switch.
    REFER to: Multifunction Switch on Steering Column, Right (211-05 Steering Column Switches).
  • If the rear washer does not operate, CHECK the windshield washer operation.
    • If the windshield washer does not operate, GO to Pinpoint Test H.
    • If the windshield washer operates, INSTALL a new wiper/washer switch.
      REFER to: Multifunction Switch on Steering Column, Right (211-05 Steering Column Switches).
B10AD:96 Rain Sensor: Internal Component Failure INSTALL a new rain sensor.
REFER to: Rain Sensor (501-16 Wipers and Washers).
B11DC:92 Rear Wiper Mode Switch: Inoperative or Incorrect Operation GO to Pinpoint Test J
B1C45:24 Front Wiper Park Switch Signal: Constantly High First, CHECK for any other BCM diagnostic trouble codes (DTCs). If no other DTCs are present, GO to Pinpoint Test G.
B1C53:13 Front Wiper Intermittent Data: Circuit Open
  • If the vehicle is not equipped with rain-sensing wipers, GO to Pinpoint Test B.
  • If the vehicle is equipped with rain-sensing wipers, GO to Pinpoint Test C.
U0231:87 Lost Communication with Rain Sensor Module: No Message GO to Pinpoint Test C
All Other Diagnostic Trouble Codes (DTCs) -
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).

Symptom Chart: Wipers and Washers

The diagnosis in this manual assumes a certain level of skill and knowledge of Ford-approved diagnostic procedures.
REFER TO: Diagnostic Methods (100-00 General Information, Description and Operation).


Symptom Chart


Condition Possible Causes Action
All wiper modes inoperative.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test A
Fog Setting Inoperative
  • Wiper/Washer Switch
  • CHECK the windshield wiper operation at low speed.
    • If the low speed wiper function operates correctly, INSTALL a new wiper/washer switch.
      REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
    • If the windshield wiper low speed function does not operate, GO to Diagnostic Test D.
The intermittent wiper mode does not operate or operates incorrectly
  • Refer to Pinpoint Test
  • If the vehicle is not equipped with rain-sensing wipers, GO to Diagnostic Test B.
  • If the vehicle is equipped with rain-sensing wipers, GO to Pinpoint Test C.
Rain-sensing wiper function inoperative.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test C
Rain-sensing wipers operate erratically/unevenly.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test C
Rain-sensing wipers are too sensitive/not sensitive enough to moisture
  • Refer to Pinpoint Test
  • GO to Pinpoint Test C
The windshield wiper low speed function does not operate.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test D
The windshield wiper high speed function does not operate.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test E
Wipers run continuously
  • Refer to Pinpoint Test
  • GO to Pinpoint Test F
Windshield wipers do not park in the correct position
  • Refer to Pinpoint Test
  • GO to Pinpoint Test G
Windshield washer inoperative
  • Refer to Pinpoint Test
  • GO to Pinpoint Test H
Windshield washer always on
  • Wiper/Washer Switch
  • INSTALL a new wiper/washer switch.
    REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
The rear window wiper does not operate.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test I
The rear window wiper does not perform a continuous full wipe cycle while operating.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test K
Rear window wiper runs continuously
  • Refer to Pinpoint Test
  • GO to Pinpoint Test J
Rear washer inoperative
  • Windshield washer concern
  • Wiper/Washer Switch
  • CHECK the windshield washer operation.
    • If the windshield washer does not operate, GO to Pinpoint Test H.
    • If the windshield washer operates, INSTALL a new wiper/washer switch.
      REFER to: Multifunction Switch on Steering Column, Right (211-05 Steering Column Switches).
Rear washer always on
  • Wiper/Washer Switch
  • INSTALL a new wiper/washer switch.
    REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
The rear window wiper does not park in the correct position.
  • Refer to Pinpoint Test
  • GO to Pinpoint Test K

Pinpoint Tests

All wiper modes do not operate.


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect fuse 11 CJB (20A) and make sure it is serviceable.

PINPOINT TEST A: ALL WIPER MODES INOPERATIVE
A1 CHECK BCM (BODY CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
  • The ignition is on.
  • Using a scan tool, perform the BCM self-test.

Are any diagnostic trouble codes (DTCs) present?
Yes
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
No GO to A2
A2 CHECK WIPER/WASHER SWITCH PARAMETER IDENTIFICATION (PIDS)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using a diagnostic scan tool, monitor the following BCM parameter identifications (PIDs):
    • Front wiper interval/automatic wiper switch (FRNWIPER_Int)
    • Front wiper low speed command (FRNWIPER_Lo)
    • Front wiper high speed command (FRNWIPER_Hi)
  • Cycle the wiper/washer switch through all positions, one at a time, ending with the wiper/washer switch in the OFF position.

Do the parameter identification (PID) values match the wiper/washer switch settings?
Yes MAKE SURE fuse 11 CJB (20A) is serviceable. If OK, GO to A5.
If not OK, CONSULT the wiring diagrams to determine the possible causes of the short circuit.
No GO to A3
A3 WIPER/WASHER SWITCH BYPASS
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C2081-3 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to A4.
A4 CHECK THE WIPER/WASHER SWITCH RETURN CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2081-5 C2280E-8

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit.
A5 CHECK THE FRONT WIPER MOTOR VOLTAGE SUPPLY CIRCUIT FOR AN OPEN AT THE BCM (BODY CONTROL MODULE)
  • Ignition OFF.
  • Disconnect C2280B.
  • The ignition is on.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2280B-10 Ground

Is the voltage greater than 11 volts?
Yes GO to A6
No REPAIR the circuit.
A6 CHECK THE WINDSHIELD WIPER MOTOR GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect the windshield wiper motor C125.
  • Action:
    Positive lead Measurement/Action Negative lead
    C125-4 Ground

Is the resistance less than 3 ohms?
Yes GO to A7
No REPAIR the circuit.
A7 CHECK THE BCM (BODY CONTROL MODULE) OUTPUT

NOTICE: This test uses a test lamp to simulate normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damage to the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.

  • Connect:
    Positive lead Measurement/Action Negative lead
    C125-2 C125-4
  • Connect C2280B.
  • The ignition is on.
  • Set the wiper/washer switch to low speed, then to the OFF position.

Does the indicator lamp illuminate when the wiper/washer switch is in the low speed position?
Yes GO to A9
No GO to A8
A8 CHECK THE BCM (BODY CONTROL MODULE) FRONT WIPER RETURN CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect C2280A.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2280A-12 Ground

Is the resistance less than 3 ohms?
Yes GO to A10
No REPAIR the circuit.
A9 CHECK THE WINDSHIELD WIPER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Connect the windshield wiper motor connector. Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new windshield wiper motor.
REFER TO: Windshield Wiper Motor (501-16 Windshield Wipers and Washers, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
A10 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

The intermittent wiper mode does not operate or operates incorrectly


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and low speed wiper request input circuits (circuits shorted together) or a short to ground from the intermittent and high speed wiper request input circuits (circuits shorted together).
B1C53:13 Front Wiper Intermittent Data: Circuit Open Sets when the BCM detects an open in the interval setting input circuit.

Possible Causes

  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST B: WIPER INTERMITTENT SETTING INOPERATIVE OR INCORRECT OPERATION
B1 CHECK THE WIPER LOW AND HIGH SPEED SETTING OPERATION
  • The ignition is on.
  • Set the wiper/washer switch to low speed, high speed, then OFF.

Do the wipers operate in any position?
Yes GO to B2
No GO to Pinpoint Test A
B2 CHECK THE BCM (BODY CONTROL MODULE) DTCs B1008:92 OR B1C53:13
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92 or B1C53:13 present?
Yes For DTC B1008:92 GO to B5.
For DTC B1C53:13 GO to B3.
No GO to B7
B3 CHECK WIPER/WASHER SWITCH INTERVAL SETTING FOR OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Carry out the wiper/washer switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the wiper/washer switch pass the component test?
Yes GO to B4
No INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
B4 CHECK INTERVAL SETTING INPUT CIRCUIT FOR OPEN CIRCUIT
  • Disconnect the C2280E connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-10 C2280E-9

Is the resistance less than 3 ohms?
Yes GO to B11
No REPAIR the circuit.
B5 DISCONNECT WIPER/WASHER SWITCH (DTC B1008:92)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to B6
B6 CHECK WIPER PERIODIC MODE REQUEST INPUT CIRCUIT FOR SHORT TO LOW SPEED AND HIGH SPEED REQUEST INPUT CIRCUITS
  • Disconnect the C2280E connector.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-3
    C2081-9 C2081-8

Is the resistance greater than 10000 ohms?
Yes GO to B11
No REPAIR the affected circuits.
B7 CHECK FRONT WIPER INTERVAL / AUTOMATIC WIPER SWITCH (FRNWIPER_INT) PID (PARAMETER IDENTIFICATION)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using the diagnostic scan tool, monitor the BCM PID FRNWIPER_INT.
  • Move the wiper/washer switch to the intermittent position, then to the off position.

Does the PID indicate active when the wiper/washer switch is in intermittent mode?
Yes GO to B10
No GO to B8
B8 ISOLATE WIPER/WASHER SWITCH (INTERMITTENT INPUT CIRCUIT)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to B9
B9 CHECK WIPER INTERMITTENT MODE REQUEST INPUT CIRCUIT FOR OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2280F-1

Is the resistance less than 3 ohms?
Yes GO to B11
No REPAIR the circuit.
B10 CHECK INTERVAL SETTING INPUT CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Disconnect the wiper/washer switch C2081.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-10 Ground

Is the resistance greater than 10000 Ohms?
Yes INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right-Hand (211-05 Steering Column Switches). CHECK the system for correct operation. If the concern persists, GO to B11.
No REPAIR the circuit.
B11 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Rain-sensing wiper function inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground from the intermittent and low speed wiper request input circuits (circuits shorted together) or a short to ground from the intermittent and high speed wiper request input circuits (circuits shorted together).
B1C53:13 Front Wiper Intermittent Data: Circuit Open Sets when the BCM detects an open in the interval setting input circuit.
U0231:87 Lost Communication with Rain Sensor Module: No Message Set when the BCM detects a LIN communication error. This may be caused by an open or short to ground in the rain sensor power supply or ground circuit, or an open in the LIN circuit between the rain sensor and the BCM.

Possible Causes

  • Fuse
  • Wiring, Terminals or Connectors
  • Foreign material on the windshield, such as dirt, dust or insects
  • Wipers
  • Windshield
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Rain sensor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect fuse CJB 2 (7.5A) and make sure it is functional.
  • Inspect the wiper/washer switch for damage.
  • Inspect the windshield for damage.
  • Inspect the rain sensor mounting for damage.

PINPOINT TEST C: RAIN SENSING WIPER FUNCTION INOPERATIVE
C1 CHECK WIPER LOW AND HIGH SPEED SETTING OPERATION
  • The ignition is on.
  • Set the wiper/washer switch to low speed, high speed, then OFF.

Do the wipers operate in any position?
Yes GO to C2
No GO to Pinpoint Test A
C2 CHECK BCM (BODY CONTROL MODULE) DTCs B1008:92, B1C53:13 OR U0231:87
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92, B1C53:13 or U0231:87 present?
Yes For DTC B1008:92 GO to C5
For DTC B1C53:13 GO to C3
For DTC U0231:87 GO to C18
No GO TO C7
C3 CHECK WIPER/WASHER SWITCH INTERVAL SETTING FOR OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Carry out the wiper/washer switch component test.
    Refer to Wiring Diagrams Cell 149 for schematic and connector information.

Does the wiper/washer switch pass the component test?
Yes GO TO C4
No INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
C4 CHECK INTERVAL SETTING INPUT CIRCUIT FOR OPEN CIRCUIT
  • Disconnect the C2280E connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-10 C2280E-9

Is the resistance less than 3 ohms?
Yes GO to C23
No REPAIR the circuit.
C5 DISCONNECT WIPER/WASHER SWITCH (DTC B1008:92)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fuse link. GO to C6.
C6 CHECK WIPER PERIODIC SPEED REQUEST INPUT CIRCUIT FOR SHORT TO LOW SPEED AND HIGH SPEED REQUEST INPUT CIRCUITS
  • Disconnect the C2280E connector.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-3
    C2081-9 C2081-8

Is the resistance greater than 10000 ohms?
Yes GO to C23
No REPAIR the affected circuits.
C7 CHECK FRONT WIPER INTERVAL / AUTOMATIC WIPER SWITCH (FRNWIPER_INT) PID (PARAMETER IDENTIFICATION)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using the diagnostic scan tool, monitor the BCM PID FRNWIPER_INT.
  • Move the wiper/washer switch to the intermittent position, then to the off position.

Does the PID indicate active when the wiper/washer switch is in intermittent mode?
Yes GO TO C10
No GO TO C8
C8 DISCONNECT WIPER/WASHER SWITCH (INTERMITTENT INPUT CIRCUIT)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to C9
C9 CHECK WIPER INTERMITTENT MODE REQUEST INPUT CIRCUIT FOR OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 C2280F-1

Is the resistance less than 3 ohms?
Yes GO to C23
No REPAIR the circuit.
C10 CHECK WIPER/WASHER SWITCH INTERVAL SETTING PARAMETER IDENTIFICATION (PIDS)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using a diagnostic scan tool, monitor the following BCM parameter identifications (PIDs):
    • Front wiper select switch A (FRNWIPER_A)
    • Front wiper select switch B (FRNWIPER_B)
    • Front wiper switch C (FRNWIPER_C)
  • Move the wiper/washer switch to each intermittent setting, then to the off position. Refer to the following table.
    Intermittent setting FRNWIPER_A FRNWIPER_B FRNWIPER_C
    AUTO 1/INT 1 Active Inactive Inactive
    AUTO 2/INT 2 Inactive Active Inactive
    AUTO 3/INT 3 Active Active Inactive
    AUTO 4/INT 4 Inactive Inactive Active
    AUTO 5/INT 5 Active Inactive Active
    AUTO 6/INT 6 Inactive Active Active

Do the PID values match the wiper/washer switch positions?
Yes GO TO C12
No GO TO C11
C11 CHECK INTERVAL SETTING INPUT CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Disconnect the wiper/washer switch C2081.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-10 Ground

Is the resistance greater than 10000 Ohms?
Yes INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right-Hand (211-05 Steering Column Switches). CHECK the system for correct operation. If the concern persists, GO to C23.
No REPAIR the circuit.
C12 CHECK WINDSHIELD FOR DAMAGE
  • Ignition OFF.
  • Inspect the windshield for cracks, pits or other visible damage around the rain sensor.

Is there any windshield damage in the area of the rain sensor?
Yes INSTALL a new windshield.
REFER TO: Windshield (501-11 Glass, Frames and Mechanisms, Removal and Installation).
No GO TO C13
C13 CHECK WINDSHIELD FOR STREAKS
  • The ignition is on.
  • Set the wiper/washer switch to low speed wiper setting while spraying water on the windshield surface. Observe the wipe quality, especially in the area of the rain sensor.

Are there streaks on the windshield in the area of the rain sensor?
Yes GO TO C14
No GO TO C16
C14 CHECK WIPER BLADES FOR STREAKS
  • Ignition OFF.
  • Clean the windshield with glass cleaner.
  • Clean the wiper blades with a cloth moistened with isopropyl alcohol. Wipe the entire length of the wiper blades.
  • The ignition is on.
  • Set the wiper/washer switch to low speed wiper setting while spraying water on the windshield surface. Observe the wipe quality, especially around the rain sensor.

Was there a noticeable improvement in wiping quality after cleaning the windshield and wiper blades?
Yes GO TO C15
No INSTALL new wiper blades. GO to C15
C15 RECHECK RAIN-SENSING WIPER OPERATION
  • Set the wiper/washer switch to AUTO 6/INT 6 setting (most sensitive to moisture) while spraying water on the windshield above the rain sensor.

Do the wipers operate when water is applied to the windshield surface?
Yes The system is currently operating correctly. The concern may have been caused by poor wiping quality of the windshield around the rain sensor.
No GO TO C16
C16 CHECK FOR RAIN SENSOR GEL LENS
  • Ignition OFF.
  • Gently press the rain sensor against the windshield and release the rain sensor retaining clips.

Does the rain sensor remain attached to the windshield?
Yes CONNECT the retaining clips. GO to C17
No The rain sensor gel lens is missing or damaged. INSTALL a new rain sensor.
REFER TO: Rain Sensor (501-16 Wipers and Washers).
C17 CHECK RAIN SENSOR MOUNTING AREA
  • From outside the vehicle, inspect the windshield area where the rain sensor is installed. The rain sensor contact area must be black, free of bubbles, air pockets or contamination between the windshield and the rain sensor.

Does the rain sensor contact area appear black, free of bubbles, air pockets or contamination between the windshield and the rain sensor?
Yes GO to C18
No INSTALL a new rain sensor.
REFER TO: Rain Sensor (501-16 Wipers and Washers). CHECK the system for correct operation. If the concern persists, GO to C23.
C18 CHECK RAIN SENSOR VOLTAGE SUPPLY CIRCUIT FOR OPEN CIRCUIT
  • Ignition OFF.
  • Disconnect the rain sensor C914.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C914-1 Ground

Is the voltage greater than 11 volts?
Yes GO to C19
No CHECK the CJB fuse 2 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams Manual to diagnose the possible causes of the short circuit.
C19 CHECK RAIN SENSOR GROUND CIRCUIT FOR OPEN
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C914-3 Ground

Is the resistance less than 3 ohms?
Yes GO to C20
No REPAIR the circuit.
C20 CHECK LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR SHORT TO VOLTAGE
  • Disconnect C2280G.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C914-2 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to C21
C21 CHECK LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR SHORT TO GROUND
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C914-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to C22
No REPAIR the circuit.
C22 CHECK LIN (LOCAL INTERCONNECT NETWORK) CIRCUIT FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C914-2 C2280G-11

Is the resistance less than 3 ohms?
Yes INSTALL a new rain sensor.
REFER TO: Rain Sensor (501-16 Wipers and Washers). CHECK the system for correct operation. If the concern persists, GO to C23.
No REPAIR the circuit.
C23 CHECK BCM (BODY CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Windshield wiper low speed setting does not work


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in the intermittent and low speed windshield wiper request input circuits (circuits shorted).

Possible Causes

  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST D: WINDSHIELD WIPER LOW SPEED SETTING INOPERATIVE
D1 CHECK WINDSHIELD WIPER/WASHER HIGH SPEED SETTING OPERATION
  • The ignition is on.
  • Set the wiper/washer switch to high speed, then turn it off.

Do the windshield wipers operate when the wiper/washer switch is in the high speed position?
Yes GO to D2
No GO to Pinpoint Test A
D2 CHECK BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to D3
No GO to D5
D3 DISCONNECT WINDSHIELD WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-3 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fuse jumper. GO to D4.
D4 CHECK LOW SPEED REQUEST INPUT CIRCUIT FOR SHORT TO INTERMITTENT WIPER REQUEST INPUT CIRCUIT
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-3 C2081-9

Is the resistance greater than 10000 Ohms?
Yes GO to D11
No REPAIR the circuits.
D5 CHECK FRONT WIPER COMMAND LOW SPEED (FRNWIPER_LO) PID (PARAMETER IDENTIFICATION)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using a scan tool, monitor the BCM FRNWIPER_LO PID.
  • Set the wiper/washer switch to low speed, then to the OFF position.

Is the PID indicating active when the wiper/washer switch is in the low speed position?
Yes GO to D8
No GO to D6
D6 DISCONNECT WINDSHIELD WIPER/WASHER SWITCH (NO DTC (DIAGNOSTIC TROUBLE CODE))
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-3 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to D7
D7 CHECK LOW SPEED WIPER REQUEST INPUT CIRCUIT FOR OPEN
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-3 C2280E-2

Is the resistance less than 3 ohms?
Yes GO to D11
No REPAIR the circuit.
D8 CHECK WINDSHIELD WIPER MOTOR VOLTAGE

NOTICE: This test uses a test lamp to simulate normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damage to the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.

  • Ignition OFF.
  • Disconnect the windshield wiper motor C125.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C125-2 C125-4
  • The ignition is on.
  • Set the wiper/washer switch to low speed.

Does the test lamp illuminate?
Yes GO to D10
No GO to D9
D9 CHECK BCM (BODY CONTROL MODULE) LOW SPEED WINDSHIELD WIPER VOLTAGE OUTPUT CIRCUIT FOR OPEN
  • Ignition OFF.
  • Disconnect C2280A.
  • Action:
    Positive lead Measurement/Action Negative lead
    C125-2 C2280A-9

Is the resistance less than 3 ohms?
Yes GO to D11
No REPAIR the circuit.
D10 CHECK WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Connect the windshield wiper motor connector. Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new windshield wiper motor.
REFER TO: Windshield Wiper Motor (501-16 Windshield Wipers and Washers, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
D11 CHECK THE BCM (BODY CONTROL MODULE) FOR CORRECT OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Windshield wiper high speed setting does not work


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in the intermittent and high speed windshield wiper request input circuits (circuits shorted).

Possible Causes

  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST E: WINDSHIELD WIPER HIGH SPEED INOPERATIVE
E1 CHECK WINDSHIELD WIPER LOW SPEED SETTING OPERATION
  • The ignition is on.
  • Set the wiper/washer switch to low speed, then to the OFF position.

Do the windshield wipers operate in low speed?
Yes GO to E2
No GO to Pinpoint Test A
E2 CHECK BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • Using a scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to E3
No GO to E5
E3 DISCONNECT WINDSHIELD WIPER/WASHER SWITCH (DTC (DIAGNOSTIC TROUBLE CODE) B1008:92)
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-8 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fuse jumper. GO to E4.
E4 CHECK HIGH SPEED REQUEST INPUT CIRCUIT FOR SHORT TO INTERMITTENT WIPER REQUEST INPUT CIRCUIT
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-8 C2081-9

Is the resistance greater than 10000 Ohms?
Yes GO to E11
No REPAIR the circuits.
E5 CHECK FRONT WIPER COMMAND HIGH SPEED (FRNWIPER_HI) PID (PARAMETER IDENTIFICATION)
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using a scan tool, monitor the BCM FRNWIPER_HI PID.
  • Set the wiper/washer switch to high speed, then turn it off.

Is the PID indicating active when the wiper/washer switch is in the high speed position?
Yes GO to E8
No GO to E6
E6 DISCONNECT WINDSHIELD WIPER/WASHER SWITCH (NO DTC (DIAGNOSTIC TROUBLE CODE))
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-8 C2081-5
  • The ignition is on.

Do the wipers operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to E7
E7 CHECK HIGH SPEED WIPER REQUEST INPUT CIRCUIT FOR OPEN
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-8 C2280F-10

Is the resistance less than 3 ohms?
Yes GO to E11
No REPAIR the circuit.
E8 CHECK BCM (BODY CONTROL MODULE) FOR WINDSHIELD WIPER MOTOR VOLTAGE

NOTICE: This test uses a test lamp to simulate normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damage to the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.

  • Ignition OFF.
  • Disconnect the windshield wiper motor C125.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C125-1 C125-4
  • The ignition is on.
  • Set the windshield wiper/washer switch to high speed.

Does the test lamp illuminate?
Yes GO to E10
No GO to E9
E9 CHECK BCM (BODY CONTROL MODULE) LOW SPEED WINDSHIELD WIPER VOLTAGE OUTPUT CIRCUIT FOR OPEN
  • Ignition OFF.
  • Disconnect C2280A.
  • Action:
    Positive lead Measurement/Action Negative lead
    C125-1 C2280A-10

Is the resistance less than 3 ohms?
Yes GO to E11
No REPAIR the circuit.
E10 CHECK WINDSHIELD WIPER MOTOR OPERATION
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Connect the windshield wiper motor connector. Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new windshield wiper motor.
REFER TO: Windshield Wiper Motor (501-16 Windshield Wipers and Washers, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
E11 CHECK BCM (BODY CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Windshield wipers remain on continuously


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1008:92 Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in one of the windshield wiper request input circuits.

Possible Causes

  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST F: WINDSHIELD WIPERS REMAIN ON CONTINUOUSLY
F1 CHECK BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B1008:92
  • The ignition is on.
  • Using the diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92 present?
Yes GO to F2
No GO to F4
F2 CHECK WINDSHIELD WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • The ignition is on.
  • Using a scan tool, clear the BCM diagnostic trouble codes (DTCs).
  • Wait 10 seconds.
  • Using the diagnostic scan tool, perform the BCM self-test.

Is DTC B1008:92 still present?
Yes GO to F3
No INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
F3 CHECK INTERMITTENT, LOW AND HIGH SPEED WIPER REQUEST INPUT CIRCUITS FOR SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the C2280E connector.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-9 Ground
    C2081-3 Ground
    C2081-8 Ground

Is the resistance greater than 10000 ohms?
Yes GO to F5
No REPAIR the faulty circuit.
F4 CHECK BCM (BODY CONTROL MODULE) WINDSHIELD WIPER OUTPUT CIRCUITS FOR SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect C2280A.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280A-9 Ground
    C2280A-10 Ground

Is there voltage present?
Yes REPAIR the faulty circuit.
No GO to F5
F5 CHECK THE BCM (BODY CONTROL MODULE) FOR CORRECT OPERATION
  • Ignition OFF.
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Windshield wipers do not park in the correct position


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1C45:24 Front Wiper Park Switch Signal: Constantly High Sets when the BCM detects the windshield wiper park detect input circuit indicates the wipers are parked for more than 1.5 seconds after the engine has been started, or when the windshield wiper park detect input circuit indicates the wipers are not parked 12 seconds after the wipers have been turned off. An open or short to ground in the windshield wiper park detect input circuit may cause this.

Possible Causes

  • Wiring, Terminals or Connectors
  • Windshield wiper pivot arm
  • Wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the windshield wiper pivot arm for damage.
  • Inspect the windshield wiper motor for damage.

PINPOINT TEST G: WINDSHIELD WIPERS DO NOT PARK IN THE CORRECT POSITION
G1 CHECK WINDSHIELD WIPER ARM FOR DAMAGE
  • Ignition OFF.
  • Inspect the windshield wiper pivot arm for damage.

Is the wiper arm in good condition?
Yes GO to G2
No INSTALL a new windshield wiper pivot arm.
REFER to: Windshield Wiper Pivot Arm (501-16 Windshield Wipers and Washers, Removal and Installation).
G2 CHECK BCM (BODY CONTROL MODULE) WINDSHIELD WIPER PARK INPUT CIRCUIT FOR SHORT TO GROUND
  • Disconnect C2280D.
  • Disconnect the windshield wiper motor C125.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C125-3 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to G3
No REPAIR the circuit.
G3 CHECK BCM (BODY CONTROL MODULE) WINDSHIELD WIPER PARK INPUT CIRCUIT FOR OPEN
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C125-3 C2280D-8

Is the resistance less than 3 ohms?
Yes GO to G4
No REPAIR the circuit.
G4 CHECK WINDSHIELD WIPER MOTOR OPERATION
  • Ignition OFF.
  • Disconnect and inspect the windshield wiper motor connector.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Connect the windshield wiper motor connector. Make sure it is properly seated and latched.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK the OASIS for any applicable TSB. If a TSB exists for this condition, STOP this test and follow the TSB instructions. If no Technical Service Bulletins (TSB) address this condition: INSTALL a new windshield wiper motor.
REFER TO: Wiper Motor (501-16 Wipers and Washers, Removal and Installation). VERIFY the system operates normally. If the condition persists, GO to G5.
No The system is currently operating correctly. The concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.
G5 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Windshield washer inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B1051:92 Front Washer Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in the windshield washer request input circuit or a short to ground in the windshield washer output circuit.
B1051:92 Rear Washer Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in the rear washer request input circuit or a short to ground in the rear washer output circuit.

Possible Causes

  • Fuse
  • Wiring, Terminals or Connectors
  • Washer pump
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • BCM

Possible Causes

  • Inspect fuse CJB 15 (15A) and make sure it is in good condition.
  • Inspect the wiper/washer switch for damage.

PINPOINT TEST H: WINDSHIELD WASHER INOPERATIVE
NOTE: In sub-zero temperatures, the washer fluid may have frozen in the washer hose and nozzles. Allow the vehicle to warm up and recheck the system. If the system operates, inform the customer of the correct type of washer fluid to use for the ambient temperature conditions.
H1 CHECK THE WASHER PUMP CIRCUIT INTEGRITY

NOTICE: The test procedure uses a test lamp to simulate a normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damaging the connector terminals, use the Rotunda Flex Probe Kit to connect the test lamp probe to the vehicle. Do not insert the test lamp probe directly into any connector.

  • Ignition OFF.
  • Disconnect the washer pump C137.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C137-1 C137-2
  • The ignition is on.
  • Activate the windshield washer function using the wiper/washer switch.

Does the indicator lamp illuminate when the washer is activated?
Yes INSTALL a new washer pump.
REFER TO: Windshield Washer Pump (501-16 Wipers and Washers, Removal and Installation).
No CHECK that fuse CJB 15 (15A) is in good condition. If it is, GO to H6.
If it is not, GO to H2
H2 CHECK THE WASHER PUMP CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect C2280A.
  • Install a new fuse CJB 15 (15A).
  • The ignition is on.

Is fuse CJB 15 (15A) in good condition?
Yes REFER TO the Wiring Diagrams Manual to identify possible causes of the short circuit between the washer pump and the BCM.
No GO to H3
H3 CHECK THE BCM (BODY CONTROL MODULE) FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect C2280B.
  • Install a new fuse CJB 15 (15A).
  • The ignition is on.

Is fuse CJB 15 (15A) in good condition?
Yes GO to H11
No GO to H4
H4 CHECK THE CJB (CENTRAL JUNCTION BOX) WIPER/WASHER SWITCH POWER SUPPLY CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Install a new fuse CJB 15 (15A).
  • The ignition is on.

Is fuse CJB 15 (15A) in good condition?
Yes GO to H5
No REPAIR the circuit.
H5 CHECK THE WASHER REQUEST INPUT CIRCUITS FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2081-2 Ground
    C2081-7 Ground

Is the resistance greater than 10000 ohms?
Yes INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REPAIR the faulty circuit.
H6 CHECK THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Perform the wiper/washer switch test.

Is the wiper/washer switch operating correctly?
Yes GO to H7
No INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
H7 CHECK THE WIPER/WASHER SWITCH POWER SUPPLY CIRCUIT FOR AN OPEN
  • The ignition is on.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2081-1 Ground

Is the voltage greater than 11 volts?
Yes GO to H8
No REPAIR the circuit.
H8 CHECK THE WIPER/WASHER SWITCH GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2081-6 Ground

Is the resistance less than 3 ohms?
Yes GO to H9
No REPAIR the circuit.
H9 CHECK THE WASHER REQUEST INPUT CIRCUITS FOR AN OPEN
  • Disconnect C2280B.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2081-2 C2280B-13
    C2081-7 C2280B-14

Is the resistance less than 3 ohms?
Yes GO to H10
No REPAIR the faulty circuit.
H10 CHECK THE WASHER PUMP CIRCUITS FOR AN OPEN
  • Disconnect C2280A.
  • Action:
    Positive lead Measurement/Action Negative lead
    C137-1 C2280A-13
    C137-2 C2280A-14

Is the resistance less than 3 ohms?
Yes GO to H11
No REPAIR the faulty circuit.
H11 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Ignition OFF.
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Rear wiper inoperative


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).

Possible Causes

  • Fuse
  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Rear wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect fuse CJB 13 (15A) and make sure it is in good condition.

PINPOINT TEST I: REAR WINDOW WIPER INOPERATIVE
I1 CHECK THE REAR WIPER LOW SPEED OPERATION
  • The ignition is on.
  • Set the wiper/washer switch to low speed, then to the OFF position.

Do the windshield wipers operate in low speed?
Yes GO to I2.
No GO to Pinpoint Test A
I2 CHECK THE REAR WIPER SWITCH INPUT (R_WP-SW) PID (PARAMETER IDENTIFICATION) STATUS
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.
  • Using the diagnostic scan tool, monitor the BCM PID R_WP-SW.
  • Set the wiper/washer switch to the rear wiper ON and OFF positions.

Does the PID indicate active when the wiper/washer switch is in the rear wiper ON position?
Yes CHECK that fuse CJB 13 (15A) is in good condition. If it is, GO to I5.
If it is not, REFER TO the Wiring Diagrams Manual to identify possible causes of the short circuit.
No GO to I3
I3 WIPER/WASHER SWITCH ISOLATION
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C2081-4 C2081-5
  • The ignition is on.

Does the rear wiper operate?
Yes REMOVE the fusible link. INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
No REMOVE the fusible link. GO to I4
I4 CHECK THE REAR WIPER REQUEST INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-4 C2280F-11

Is the resistance less than 3 ohms?
Yes GO to I9
No REPAIR the circuit.
I5 CHECK THE BCM (BODY CONTROL MODULE) FOR VOLTAGE AT THE REAR WIPER MOTOR

NOTICE: This test uses a test lamp to simulate normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damage to the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.

  • Ignition OFF.
  • Disconnect the rear wiper motor C4218.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C4218-1 C4218-3
  • The ignition is on.
  • Set the wiper/washer switch to high speed and the rear wiper to the settings position, and observe the indicator lamp.
  • Set the wiper/washer switch to the OFF position.

Does the indicator lamp illuminate when the wiper/washer switch is in the rear wiper ON position?
Yes INSTALL a new rear wiper motor.
REFER TO: Rear Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No GO to I6
I6 CHECK THE REAR WIPER GROUND CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Positive lead Measurement/Action Negative lead
    C4218-3 Ground

Is the resistance less than 3 ohms?
Yes GO to I7
No REPAIR the circuit.
I7 CHECK THE BCM (BODY CONTROL MODULE) REAR WIPER OUTPUT VOLTAGE CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Disconnect C2280C.
  • Action:
    Positive lead Measurement/Action Negative lead
    C4218-1 C2280C-10

Is the resistance less than 3 ohms?
Yes GO to I8
No REPAIR the circuit.
I8 CHECK THE REAR WIPER POWER SUPPLY CIRCUIT FOR AN OPEN AT THE BCM (BODY CONTROL MODULE)
  • Disconnect C2280B.
  • Action:
    Positive lead Measurement/Action Negative lead
    C2280B-15 Ground

Is the voltage greater than 11 volts?
Yes GO to I9
No REPAIR the circuit.
I9 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

Rear wiper remains on continuously


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).


DTC Fault Trigger Conditions


Trouble Code Description Fault Trigger Conditions
B11DC:92 Rear Wiper Mode Switch: Inoperative or Incorrect Operation Sets when the BCM detects a short to ground in the rear wiper request input circuit.

Possible Causes

  • Wiring, Terminals or Connectors
  • Wiper/washer switch (also known as the right multifunction steering column switch)
  • Rear wiper motor
  • BCM

Visual Inspection and Preliminary Diagnosis

  • Inspect the wiper/washer switch for damage.

PINPOINT TEST J: REAR WINDOW WIPER REMAINS ON CONTINUOUSLY
J1 CHECK THE BCM (BODY CONTROL MODULE) DTC (DIAGNOSTIC TROUBLE CODE) B11DC:92
  • The ignition is on.
  • Using the diagnostic scan tool, perform the BCM self-test.

Is DTC B11DC:92 present?
Yes GO to J2
No GO to J4
J2 CHECK THE WIPER/WASHER SWITCH
  • Ignition OFF.
  • Disconnect the wiper/washer switch C2081.
  • The ignition is on.
  • Using a scan tool, clear the BCM diagnostic trouble codes (DTCs).
  • Wait 10 seconds.
  • Using the diagnostic scan tool, perform the BCM self-test.

Is DTC B11DC:92 still present?
Yes GO to J3
No INSTALL a new wiper/washer switch.
REFER TO: Multifunction Switch, Steering Column, Right (211-05 Steering Column Switches).
J3 CHECK THE REAR WIPER REQUEST INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect the C2280F connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2081-4 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to J5
No REPAIR the circuit.
J4 CHECK THE BCM (BODY CONTROL MODULE) REAR WIPER OUTPUT CIRCUIT FOR A SHORT TO VOLTAGE
  • Ignition OFF.
  • Disconnect C2280C.
  • The ignition is on.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C2280C-10 Ground

Is there voltage present?
Yes REPAIR the circuit.
No GO to J5
J5 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

The rear window wiper does not park in the correct position.


Refer to Wiring Diagrams Cell 81 for schematic and connector information.

Normal Operation and Fault Symptoms


REFER TO: Windshield Wipers and Washers - System Operation and Component Description (501-16 Windshield Wipers and Washers, Description and Operation).

Possible Causes

  • Wiring, Terminals or Connectors
  • Rear wiper motor
  • BCM

PINPOINT TEST K: REAR WINDOW WIPER DOES NOT PARK IN THE CORRECT POSITION
K1 CHECK THE WIPER MOTOR POWER SUPPLY CIRCUIT FOR REAR WINDOW WIPER MOTOR FOR AN OPEN

NOTICE: This test uses a test lamp to simulate normal circuit load. Use only the Rotunda test lamp (SGT27000) or an equivalent 250-300 mA incandescent test lamp. To avoid damage to the connector terminals, use the Rotunda Flex Probe kit to connect the test lamp probe to the vehicle. Do not connect the test lamp probe directly to any connector.

  • Ignition OFF.
  • Disconnect the rear wiper motor C4218.
  • Connect:
    Positive lead Measurement/Action Negative lead
    C4218-2 C4218-3
  • The ignition is on.
  • Set the wiper/washer switch to the rear window wiper ON position and observe the indicator lamp.
  • Set the wiper/washer switch to the OFF position.

Does the indicator lamp illuminate when the wiper/washer switch is in the rear wiper ON position?
Yes INSTALL a new rear wiper motor.
REFER TO: Rear Wiper Motor (501-16 Wipers and Washers, Removal and Installation).
No GO to K2
K2 CHECK THE WIPER MOTOR POWER SUPPLY CIRCUIT FOR WIPER MOTOR FOR REAR WINDOW FOR AN OPEN
  • Ignition OFF.
  • Disconnect C2280C.
  • Action:
    Positive lead Measurement/Action Negative lead
    C4218-2 C2280C-1

Is the resistance less than 3 ohms?
Yes GO to K3
No REPAIR the circuit.
K3 CHECK THE BCM (BODY CONTROL MODULE) FOR PROPER OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install a new connector or terminal - clean the module pins)
    • damaged or bent terminals/pins - install new terminals/pins
    • pushed-out pins - install new pins as necessary
  • Reconnect the BCM. Make sure that they are installed and locked correctly.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable TSBs. If a TSB exists for this concern, STOP this test and follow the TSB instructions. If no technical service bulletins (TSBs) address this concern: INSTALL a new BCM.
REFER TO: Body Control Module (BCM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No The system is currently operating correctly. The concern may have been caused by module connections. ADDRESS the root cause of any connector or terminal issues.

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