Pinpoint Test B: A Single Mirror is Inoperative

Rear View Mirrors - Exterior

Pinpoint Test B: A Single Mirror is Inoperative

Refer to Wiring Diagram Set 124, Power Mirrors for schematic and connector information [1][2]Diagrams By Number.

Normal Operation

The exterior mirror control switch uses circuit CPM23 (GY) as the common circuit for both exterior mirror up/down and right/left movement.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors

- Exterior mirror control switch

- Exterior mirror motor

- Exterior mirror

PINPOINT TEST B : A SINGLE MIRROR IS INOPERATIVE

B1 CHECK THE LH EXTERIOR MIRROR

- Set the exterior mirror control switch to the LH mirror position.

- Use the exterior mirror control switch to operate the LH exterior mirror.

Does the LH exterior mirror operate?

Yes
GO to B2.

No
GO to B4.

B2 CHECK THE EXTERIOR MIRROR CONTROL SWITCH

- Ignition OFF.

- Disconnect: Exterior Mirror Control Switch C527.

- Carry out the Exterior Mirror Control Switch Component Test.

Did the exterior mirror control switch pass the component test?

Yes
GO to B3.

No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch . TEST the system for normal operation.

B3 CHECK COMMON CIRCUIT FOR AN OPEN

- Disconnect: RH Exterior Mirror C622.

- Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY), harness side and RH exterior mirror C622-2, circuit CPM23 (GY), harness side.





Is the resistance less than 5 ohms?

Yes
CHECK the RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.

B4 CHECK THE EXTERIOR MIRROR CONTROL SWITCH

- Ignition OFF.

- Disconnect: Exterior Mirror Control Switch C527.

- Carry out the Exterior Mirror Control Switch Component Test.

Did the exterior mirror control switch pass the component test?

Yes
GO to B5.

No
INSTALL a new exterior mirror control switch. REFER to Exterior Mirror Control Switch . TEST the system for normal operation.

B5 CHECK COMMON CIRCUIT FOR AN OPEN

- Disconnect: LH Exterior Mirror C516.

- Measure the resistance between exterior mirror control switch C527-6, circuit CPM23 (GY), harness side and LH exterior mirror C516-2, circuit CPM23 (GY), harness side.





Is the resistance less than 5 ohms?

Yes
CHECK the LH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open circuits and damaged or pushed-out pins. If the jumper harness is not OK, REPAIR the jumper harness. If the jumper harness cannot be repaired, INSTALL a new exterior mirror. REFER to Exterior Mirror . If the jumper harness is OK, INSTALL a new exterior mirror motor. REFER to Exterior Mirror Motor . TEST the system for normal operation.

No
REPAIR the circuit. TEST the system for normal operation.