CHECK the mirror for structural damage. If necessary, INSTALL a new mirror. REFER TO: Outside Mirror (501-09 Rear View Mirrors, Removal and Installation).
Outside mirror turn signal indicator inoperative or always on
Fuse
Wiring, Terminals or Connectors
Outside Mirror
REFER TO: Turn Signal and Hazard Warning Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
Both outside mirrors inoperative
Refer to Pinpoint Test
GO to Pinpoint Test A
One outside mirror inoperative
Refer to Pinpoint Test
GO to Pinpoint Test B
One outside mirror inoperative in all directions
Refer to Pinpoint Test
GO to Pinpoint Test C
Symptom Chart: Rearview Mirrors - Outside, Heated
Condition
Possible Sources
Action
Outside mirror heater inoperative
Refer to Pinpoint Test
GO to Pinpoint Test D
Symptom Chart: Rear View Mirrors - Interior
Condition
Possible Sources
Action
Interior mirror damaged
Interior Mirror Glass/Housing Dirty
CLEAN the affected interior mirror surface.
Interior mirror damaged
INSPECT the interior mirror for damage. If necessary, INSTALL a new interior rearview mirror. REFER TO: Interior Rearview Mirror (501-09 Rearview Mirrors, Removal and Installation).
Symptom Chart: Noise, Vibration and Harshness (NVH)
Condition
Possible Sources
Action
Outside mirror vibrates/loose
Outside mirror motor screws loose
REMOVE the mirror glass and TIGHTEN the outside mirror motor screws. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
Outside mirror mounting nuts are loose
TIGHTEN the outside mirror mounting nuts. REFER TO: Outside Mirror (501-09 Rear View Mirrors, Removal and Installation).
Outside mirror glass is loose
PRESS on the center of the outside mirror glass up, down, left and right to make sure the outside mirror glass is seated correctly. If the outside mirror glass is still loose, REMOVE the outside mirror glass and CHECK the outside mirror backing plate for damage. If the outside mirror backing plate is damaged, INSTALL a new outside mirror glass. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
Aftermarket air deflector / rock shields
If possible, REMOVE the non-original air deflector/stone shield, then TEST DRIVE the vehicle under the conditions that cause the concern. If no concern is present, INFORM the customer that aftermarket components were causing the undesirable vibration.
Wind Noise
Foam gasket between the outside mirror housing and the door is misaligned or damaged
CHECK that the foam gasket is in good condition. If necessary, RELOCATE the foam gasket between the outside mirror housing and the door frame, or REPAIR the foam gasket if necessary. If the foam gasket cannot be repaired, INSTALL a new outside mirror. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
Outside mirror is incorrectly installed on the door
CHECK that there is clearance between the outside mirror and the door. If necessary, loosen the outside mirror nuts and RELOCATE the outside mirror as required.
Outside Mirror Cover
CHECK that the outside rearview mirror cover is not loose or broken. If necessary, INSTALL a new outside rearview mirror cover. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
Interior mirror vibrates/loose
Interior Mirror Mounting Loose
If the mirror is still on the windshield, do not remove it. TRY to fully install the mirror first. If the mirror is still loose or vibrates, REMOVE and REINSTALL the mirror. If the condition still exists, INSTALL a new interior rearview mirror. REFER TO: Interior Rearview Mirror (501-09 Rearview Mirrors, Removal and Installation).
Pinpoint Tests
Both outside mirrors inoperative
For wiring diagrams and connectors, refer to Cell 124 of the Wiring Diagrams.
Normal Operation and Fault Symptoms
Fuse CJB 16 (5A) supplies voltage to the outside mirror control switch at all times. The outside mirror control switch supplies voltage and ground to the outside mirror motors based on switch inputs.
Possible Sources
Fuse
Wiring, Terminals or Connectors
Exterior Mirror Control Switch
Visual Inspection and Preliminary Diagnosis
Inspect fuse CJB 16 (5A).
PINPOINT TEST A: BOTH OUTSIDE MIRRORS INOPERATIVE
A1 CHECK THE VOLTAGE AT THE MASTER WINDOW SWITCH
Ignition OFF.
Disconnect the outside mirror control switch C577.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C577-6
Ground
Is the voltage greater than 11 volts?
Yes
GO to A2
No
CHECK that CJB fuse 16 (5A) is in good condition. If OK, REPAIR the circuit. If not OK, REFER TO the Wiring Diagrams manual to determine possible causes of the short circuit.
A2 CHECK THE GROUND AT THE MASTER WINDOW SWITCH
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C577-4
Ground
Is the resistance less than 3 ohms?
Yes
GO to A3
No
REPAIR the circuit.
A3 CHECK THE OUTSIDE MIRROR COMMON CIRCUIT FOR AN OPEN
Disconnect the LH outside mirror C521.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C577-3
C521-6
Is the resistance less than 3 ohms?
Yes
INSTALL a new outside mirror control switch.
No
REPAIR the circuit.
One outside mirror inoperative
For wiring diagrams and connectors, refer to Cell 124 of the Wiring Diagrams.
Normal Operation and Fault Symptoms
The left and right outside mirrors share a common circuit that is used for up/down and left/right movement. Refer to Rearview Mirrors - Exterior, Power. REFER TO: Rearview Mirrors - System Operation and Component Description (501-09 Rearview Mirrors, Description and Operation).
Possible Sources
Wiring, Terminals or Connectors
Exterior Mirror Control Switch
Outside Mirror Motor
Outside Mirror
PINPOINT TEST B: ONE OUTSIDE MIRROR INOPERATIVE
B1 CHECK THE OUTSIDE MIRROR CONTROL SWITCH
Ignition OFF.
Disconnect the outside mirror control switch C577.
Perform the outside mirror switch component test. Refer to Wiring Diagrams, Cell 149, for schematic and connector information.
Does the outside mirror control switch pass the component test?
Yes
GO to B2
No
INSTALL a new outside mirror control switch.
B2 CHECK THE OUTSIDE MIRROR COMMON CIRCUIT FOR AN OPEN AT THE OUTSIDE MIRROR
Disconnect the inoperative outside mirror C521 or C626.
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C577-3
C521-6
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C577-3
C626-6
Is the resistance less than 3 ohms?
Yes
CHECK the inoperative outside mirror wiring harness between the vehicle harness and the outside mirror motor for an open circuit and damaged or pushed-out terminals. If the jumper is not OK, REPAIR the connecting harness. If the connecting harness cannot be repaired, INSTALL a new outside mirror. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation). If the connecting harness is OK, INSTALL a new outside mirror motor. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
No
REPAIR the circuit.
One outside mirror inoperative in all directions
For wiring diagrams and connectors, refer to Cell 124 of the Wiring Diagrams.
Normal Operation and Fault Symptoms
The outside mirror switch supplies voltage and ground to the left and right outside mirrors. The outside mirrors are for movement control. Each mirror contains a horizontal and a vertical motor. The outside mirror switch controls movement by changing the polarity of the voltage and ground circuits connected to each motor. Refer to Mirrors - Outside, Power REFER TO: Mirrors - System Operation and Component Description (501-09 Mirrors, Description and Operation).
Possible Sources
Wiring, Terminals or Connectors
Exterior Mirror Control Switch
Outside Mirror Motor
Outside Mirror
PINPOINT TEST C: ONE MIRROR INOPERATIVE IN ALL DIRECTIONS
C1 CHECK OUTSIDE MIRROR MOVEMENT
Move the left and right outside mirrors left, right, up and down using the outside mirror control switch.
Do the outside mirrors move in accordance with the outside mirror control switch?
Yes
The system is now operating correctly. CHECK the system for loose or corroded connectors.
No
GO to C2
C2 CHECK THE OUTSIDE MIRROR CONTROL SWITCH
Ignition OFF.
Disconnect the outside mirror control switch C577.
Perform the outside mirror switch component test. Refer to Wiring Diagrams, Cell 149, for schematic and connector information.
Does the outside mirror control switch pass the component test?
Yes
GO to C3
No
INSTALL a new outside mirror control switch.
C3 CHECK THE OUTSIDE MIRROR CONTROL CIRCUITS FOR A SHORT TO VOLTAGE
Disconnect the inoperative outside mirror C521 or C626.
The ignition is on.
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C577-1
Ground
C577-3
Ground
C577-7
Ground
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C577-2
Ground
C577-5
Ground
C577-3
Ground
Is there voltage present?
Yes
REPAIR the faulty circuit.
No
GO TO C4
C4 CHECK THE OUTSIDE MIRROR CONTROL CIRCUITS FOR AN OPEN
Ignition OFF.
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C577-1
C521-7
C577-3
C521-6
C577-7
C521-5
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C577-2
C626-5
C577-3
C626-6
C577-5
C626-7
Is the resistance less than 3 ohms?
Yes
GO to C5
No
REPAIR the faulty circuit.
C5 CHECK THE OUTSIDE MIRROR CONTROL CIRCUIT FOR A SHORT TO GROUND
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C521-6
C521-7
C521-5
C521-7
C521-5
C521-6
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C626-6
C626-5
C626-6
C626-7
C626-5
C626-7
Is the resistance greater than 10000 ohms?
Yes
CHECK the inoperative outside mirror wiring harness between the vehicle harness and the outside mirror motor for an open circuit and damaged or pushed-out terminals. If the jumper is not OK, REPAIR the connecting harness. If the connecting harness cannot be repaired, INSTALL a new outside mirror. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation). If the connecting harness is OK, INSTALL a new outside mirror motor. REFER TO: Outside Mirror (501-09 Rearview Mirrors, Removal and Installation).
No
REPAIR the faulty circuit.
Outside mirror heating does not work
Refer to Wiring Diagrams Cell 56 for schematic and connector information. Refer to Wiring Diagrams Cell 124 for schematic and connector information.
Normal Operation and Fault Symptoms
Refer to Mirrors - Outside, Heated REFER TO: Mirrors - System Operation and Component Description (501-09 Mirrors, Description and Operation).
Possible Sources
Fuse
Wiring, Terminals or Connectors
Outside Mirror Glass
Outside Mirror
Visual Inspection and Preliminary Diagnosis
Inspect the housing of the non-operating outside mirror and the glass for damage.
Inspect fuse CJB 25 (7.5A).
PINPOINT TEST D: HEATED OUTSIDE MIRROR INOPERATIVE
D1 CHECK REAR WINDOW DEFROSTER OPERATION
Start the engine.
With the engine running, turn on the rear window defroster.
Using an infrared temperature gun or equivalent, measure the rear window glass temperature for approximately 30 seconds, noting temperature changes.
Does the temperature of the rear window glass increase?
Yes
GO to D2
No
CHECK the rear window defroster system. REFER TO: Glass, Frames and Mechanisms - Vehicles With: Front Manual Window Regulators (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing).
D2 CHECK OUTSIDE MIRROR HEATING OPERATION
With the rear window defroster on, using an infrared temperature gun or equivalent, measure the temperature of the left and right outside mirror glass for approximately 30 seconds, noting temperature changes.
Is at least one heated mirror operating correctly?
Yes
GO to D3
No
CHECK that CJB fuse 25 (7.5A) is serviceable. If OK, REPAIR the CBP25 (white-orange) circuit. If not OK, REFER to the Wiring Diagrams manual to determine the possible causes of the short circuit.
D3 CHECK THE VOLTAGE AT THE HEATED OUTSIDE MIRROR
Ignition OFF.
Disconnect the inoperative outside mirror C521 or C626.
Start the engine.
With the engine running, turn on the rear window defroster.
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C521-1
Ground
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C626-1
Ground
Is the voltage greater than 11 volts?
Yes
GO to D4
No
REPAIR the circuit.
D4 CHECK THE OUTSIDE MIRROR GROUND CIRCUIT FOR AN OPEN
Ignition OFF.
Action: Click to display the connectors
LH Outside Mirror
Positive lead
Measurement/Action
Negative lead
C521-2
Ground
Click to display the connectors
Right outside mirror
Positive lead
Measurement/Action
Negative lead
C626-2
Ground
Is the resistance less than 3 ohms?
Yes
CHECK the outside mirror jumper harness between the vehicle wiring and the outside mirror glass for a short circuit and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness is not repairable, INSTALL a new outside mirror. REFER TO: Outside Mirror (501-09 Mirrors, Removal and Installation). If the jumper harness is OK, INSTALL a new outside mirror glass. REFER TO: Outside Mirror (501-09 Mirrors, Removal and Installation).
No
REPAIR the circuit.
Automatic-dimming interior mirror does not operate correctly
For wiring diagrams and connectors, refer to Cell 124 of the Wiring Diagrams.
Normal Operation and Fault Symptoms
Refer to Mirrors - Interior, Automatic Dimming REFER TO: Mirrors - System Operation and Component Description (501-09 Mirrors, Description and Operation).
Possible Sources
Fuse
Wiring, Terminals or Connectors
Automatic-Dimming Interior Mirror
Back-up lamp concern
Incorrect orientation of the automatic-dimming interior mirror
PINPOINT TEST E: INTERIOR AUTOMATIC-DIMMING MIRROR OPERATES INCORRECTLY
E1 CHECK REVERSE LAMP OPERATION
The ignition is on.
Observing the reverse lamps, move the gear selector lever through the full range.
Do the reverse lamps illuminate only when the selector lever is in REVERSE ?
Yes
GO to E2
No
CHECK the backup lamps. REFER to: Backup Lamps (417-01 Exterior Lighting, Diagnosis and Testing).
E2 CHECK THE AUTOMATIC-DIMMING INTERIOR MIRROR FOR CORRECT INSTALLATION
Inspect the automatic-dimming interior mirror to make sure the rearward-facing sensor is at the top of the mirror glass.
Is the rearward-facing sensor located at the top of the automatic-dimming interior mirror glass?
Yes
GO to E3
No
INSTALL the automatic-dimming interior mirror so the rearward-facing sensor is located at the top of the mirror glass. REFER TO: Interior Rear View Mirror (501-09 Mirrors, Removal and Installation).
E3 MAKE SURE THE FORWARD AND REARWARD SENSORS ARE NOT BLOCKED
Inspect the automatic-dimming interior mirror to make sure the forward and rearward sensors are not blocked. Sources of blockage may include:
stickers, window decals or tags
folding TV or DVD player screens
non-OEM window tint
dirt or debris
Is either sensor blocked?
Yes
If possible, REMOVE the obstruction. If the obstruction cannot be removed, INFORM the customer that the blockage will affect the operation of the automatic-dimming interior rear view mirror.
Use a bright lamp to illuminate the forward-facing sensor. The mirror should adjust to the high-reflectance state (the mirror will be clear).
Does the mirror adjust to the high-reflectance (clear) state?
Yes
GO to E5
No
INSTALL a new auto-dimming inside rearview mirror. REFER TO: Inside Rearview Mirror (501-09 Mirrors, Removal and Installation).
E5 CHECK AUTOMATIC-DIMMING INTERIOR MIRROR OPERATION - NIGHT CONDITIONS WITH LIGHTS
Select PARK.
Simulate night conditions with glare:
Cover the front sensor with black electrical tape or other dark material (covering the sensor with a finger or hand is not sufficient).
Illuminate the rear-facing sensor. The mirror glass should darken to a lower reflectance level.
Does the mirror adjust to the low-reflectance (dark) state?
Yes
GO to E6
No
GO to E8
E6 CHECK OPERATION OF INSIDE AUTO-DIMMING MIRROR - NIGHT CONDITIONS WITHOUT GLARE
Simulate night conditions without glare:
Cover the front and rear sensors with black electrical tape or other dark material (covering the sensors with a finger or hand is not sufficient).
Does the mirror adjust to the high-reflectance (clear) state?
Yes
GO to E7
No
GO to E8
E7 CHECK OPERATION OF INSIDE AUTO-DIMMING MIRROR - NIGHT CONDITIONS WITH ILLUMINATION AND VEHICLE REVERSE MOVEMENT
Simulate night conditions with glare:
Cover the front sensor with black electrical tape or other dark material (covering the sensor with a finger or hand is not sufficient).
Illuminate the rear-facing sensor. The mirror glass should darken to a lower reflectance level.
Select BACK.
Does the mirror switch to the high-reflectance (clear) state? after reverse has been selected?
Yes
The system is currently operating normally. CHECK the operation of the inside auto-dimming rearview mirror.
No
GO to E8
E8 CHECK VOLTAGE AT INSIDE AUTO-DIMMING MIRROR
Ignition OFF.
Disconnect the inside auto-dimming mirror C911.
The ignition is on.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C911-1
Ground
Is the voltage greater than 11 volts?
Yes
GO to E9
No
CHECK that CJB fuse 2 (7.5A) is good. If OK, REPAIR the circuit. If not OK, REFER to the Wiring Diagrams manual to determine possible causes of the short circuit.
E9 CHECK GROUND OF INSIDE AUTO-DIMMING MIRROR
Ignition OFF.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C911-4
Ground
Is the resistance less than 3 ohms?
Yes
GO to E10
No
REPAIR the circuit.
E10 CHECK VOLTAGE IN REAR AUTO-DIMMING MIRROR CIRCUIT
The ignition is on.
Select BACK.
Action: Click to display the connectors
Positive lead
Measurement/Action
Negative lead
C911-9
Ground
Is the voltage greater than 11 volts?
Yes
INSTALL a new auto-dimming inside rearview mirror. REFER TO: Inside Rearview Mirror (501-09 Mirrors, Removal and Installation).
No
REPAIR the circuit.
?
Test yourself
A quick Ford Fiesta quiz: every answer comes with an explanation and a link to the manual page.
