Ford Escape Quiz
Electrical

Diagnosis and Testing - Perimeter Anti-Theft Alarm

In this manual: Electrical
General Information — 26Chassis — 160Powertrain — 323Electrical — 356Body and Paint — 290
~9min read

Diagnostic Trouble Code (DTC) Chart

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).


Diagnostic Trouble Code Chart


Module Trouble Code Description Action
BCM B1305:01 Hood Switch: General Electrical Malfunction GO to Pinpoint Test C
BCM B1305:15 Hood Switch: Short to Battery or Open Circuit GO to Pinpoint Test C

Global Customer Symptom Codes (GCSC) Table

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 Action
Safe and Secure > Anti-Theft > Control > Inoperative GO to Pinpoint Test B
Safe and Secure > Anti-Theft > Control > Inoperative GO to Pinpoint Test D
Safe and Secure > Anti-Theft > Performance > Does Not Work GO to Pinpoint Test A

Symptom Chart: Anti-Theft - Perimeter

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).

Condition Action
No Horn Sounds During Alarm Activation DIAGNOSIS of inoperative horn
REFER TO: Horn (413-06 Horn, Diagnosis and Testing).
Alarm Does Not Activate From Unauthorized Door Entry CHECK that the courtesy lamps do not illuminate with the door open
REFER TO: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
Alarm Does Not Activate From Unauthorized Rear Door Entry CHECK that the courtesy lamps do not illuminate with the door open
REFER TO: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing).
Alarm Does Not Activate From Unauthorized Entry Through the Hood GO to Pinpoint Test A
Alarm Does Not Arm or Turn Signals Do Not Flash GO to Pinpoint Test B
Alarm System Activates Falsely GO to Pinpoint Test D

Pinpoint Tests


PINPOINT TEST A: THE ALARM DOES NOT ACTIVATE FROM UNAUTHORIZED ENTRY THROUGH THE HOOD

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 117.

Normal Operation and Fault Symptoms

REFER TO: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Alarm, Description and Operation).

Possible Sources

  • Wiring, Terminals or Connectors
  • Hood Latch
  • BCM

Visual Inspection and Pre-checks

  • Inspect the hood latch for damage.
A1 CHECK THE BCM (BODY CONTROL MODULE) HOOD AJAR SWITCH (HOOD_SW) PID (PARAMETER IDENTIFICATION)
  • The ignition is on.
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.

  • Access the BCM and monitor the HOOD_SW PID

  • Disconnect: Hood Ajar Switch C127.

Does the HOOD_SW PID show AJAR when the switch is disconnected?
Yes INSTALL a new hood latch.
REFER TO: Hood Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
No GO to A2
A2 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR A SHORT TO GROUND
  • Ignition OFF.
  • Disconnect: BCM C2280E.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C127-2 Ground

Is the resistance greater than 10000 Ohms?
Yes GO to A3
No REPAIR the circuit.
A3 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect all BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, 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.
PINPOINT TEST B: THE ALARM DOES NOT ARM OR THE TURN SIGNALS DO NOT FLASH TO CONFIRM

For wiring diagrams and connector information, refer to Section 95 Wiring Diagrams.

Normal Operation and Fault Symptoms

REFER TO: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Alarm, Description and Operation).

Possible Sources

  • Door Ajar Switch Input
  • Hood Ajar Switch Input
  • Liftgate Ajar Switch Output
  • Turn Signal Output
  • RKE transmitter concern
  • BCM

NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector.

B1 CHECK THE BCM (BODY CONTROL MODULE) DTCs (DIAGNOSTIC TROUBLE CODES)
  • The ignition is on.
  • Using a scan tool, perform the BCM self-test.

Is DTC B1305:01 or B1305:15 present?
Yes GO to Pinpoint Test C
No GO to B2
B2 CHECK THE DOOR AJAR AND LIFTGATE SWITCH INPUTS
  • Close all doors and the liftgate.
  • Observe the PMI.

Does the IPC indicate an open door or liftgate?
Yes
REFER TO: Instrumentation, Message Center and Warning Chimes (413-01 Instrumentation, Message Center and Warning Chimes, Diagnosis and Testing).
No GO to B3
B3 CHECK THE HAZARD LAMP OPERATION
  • Ignition OFF.
  • Activate the hazard warning function and observe the turn signal lamps.

Do all turn signal lamps flash and then turn off?
Yes GO to B4
No CHECK the inoperative turn signal lamps.
REFER TO: Turn Signal and Hazard Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
B4 CHECK THE RKE (REMOTE KEYLESS ENTRY) TRANSMITTER FUNCTION
  • Using the RKE transmitter, lock and unlock the doors.

Do the doors lock and unlock?
Yes GO to B5
No CHECK the inoperative RKE transmitter.
REFER TO: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing).
B5 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, 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.
PINPOINT TEST C: B1305:01, B1305:15

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 117.

Normal Operation and Fault Symptoms

REFER TO: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Alarm, Description and Operation).

DTC Fault Trigger Conditions

Trouble Code Description Fault Trigger Condition
BCM B1305:01 Hood Switch: General Electrical Malfunction Set when the BCM detects an opening through the hood ajar switch input during the self-test. This DTC is also set if the self-test is performed with the hood open.
BCM B1305:15 Hood Switch: Short to Battery or Open Circuit Set when the BCM detects a short to battery or an open circuit on the hood ajar switch input during the self-test.

Possible Sources

  • Wiring, Terminals or Connectors
  • Hood Latch
  • BCM

Visual Inspection and Pre-checks

  • Inspect the hood latch for damage.

NOTICE: Use the correct probe adapter(s) when making measurements. Using incorrect probe adapter(s) may damage the connector.

C1 CHECK THE HOOD AJAR SWITCH
  • Disconnect: Hood Ajar Switch C127.
  • The ignition is on.
  • Connect:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C127-2 C127-1
  • Using a scan tool, perform the BCM self-test.

Is DTC B1305:01 or B1305:15 still present?
Yes REMOVE the fusible link. GO to C2.
No REMOVE the fusible link. INSTALL a new hood latch.
REFER TO: Hood Latch (501-14 Handles, Locks, Latches and Entry Systems, Removal and Installation).
C2 CHECK THE HOOD AJAR SWITCH GROUND CIRCUIT FOR AN OPEN
  • Connect a fused jumper wire:
    Click to display connectors
    Positive lead Measurement/Action Negative lead
    C127-2 Ground
  • Using a scan tool, perform the BCM self-test.

Is DTC B1305:01 or B1305:15 still present?
Yes REMOVE the fusible link. GO to C3
No REMOVE the fuse jumper wire. REPAIR the circuit.
C3 CHECK THE HOOD AJAR SWITCH FOR A SHORT TO VOLTAGE
  • Disconnect the C2280E connector.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C127-2 Ground

Is there voltage present?
Yes REPAIR the faulty circuit.
No GO TO C4
C4 CHECK THE HOOD AJAR SWITCH INPUT CIRCUIT FOR AN OPEN
  • Ignition OFF.
  • Action:
    Click to display the connectors
    Positive lead Measurement/Action Negative lead
    C127-2 C2280E-26

Is the resistance less than 3 ohms?
Yes GO to C5
No REPAIR the circuit.
C5 CHECK THE BCM (BODY CONTROL MODULE) OPERATION
  • Disconnect and inspect all BCM connectors.
  • Repair:
    • corrosion (install new connector or terminals - clean module pins)
    • damaged or bent pins - install new terminals/pins
    • backed-out pins - install new pins as necessary
  • Reconnect the BCM connectors. Make sure they are fully seated and locked.
  • Operate the system and determine if the concern is still present.

Is the concern still present?
Yes CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this condition, STOP this test and FOLLOW the service article instructions. If no service article resolves this condition, 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.
PINPOINT TEST D: THE ALARM SYSTEM ACTIVATES FALSELY

For wiring diagrams and connector information, refer to Wiring Diagrams Cell 117.

Normal Operation and Fault Symptoms

REFER TO: Perimeter Anti-Theft Alarm - System Operation and Component Description (419-01A Perimeter Alarm, Description and Operation).

Possible Sources

  • Panic Alarm Function
  • Door Ajar
  • Hood Ajar
D1 CHECK THE BCM (BODY CONTROL MODULE) ALARM_EVT PID (PARAMETER IDENTIFICATION)
  • The ignition is on.
  • Using the diagnostic scan tool, view the BCM parameter identification (PID) data.

  • Access the BCM and monitor the ALARM_EVT_1 PID

  • Access the BCM and monitor the ALARM_EVT_2 PID

  • Access the BCM and monitor the ALARM_EVT_3 PID

  • Access the BCM and monitor the ALARM_EVT_4 PID


Does the PID show PANIC, DOOR AJAR, HOOD AJAR?
Yes If PANIC causes a false alarm event, the system is currently operating correctly. ADVISE the customer about the PANIC ALARM in the owner's literature.
If DOOR AJAR causes a false alarm event,
REFER TO: Interior Lighting (417-02 Interior Lighting, Diagnosis and Testing). If the false alarm is caused by an ajar hood, GO to Pinpoint Test C.
No The system is currently operating correctly. The concern may have been a valid PATS key read that was NOT received when the ignition moved to the RUN position.

Test yourself

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