PINPOINT TEST B : A Single Mirror Is Inoperative - Non-Memory
- B1 CHECK THE EXTERIOR MIRROR
- Ignition OFF.
- Disconnect: Inoperative RH Exterior Mirror or LH Exterior Mirror.
- Ignition ON.
- Select the inoperative mirror on the exterior mirror control switch.
- For inoperative LH mirror, while holding the exterior mirror control switch in the up position, monitor:
Positive Lead Measurement / Action Negative Lead C516-2 Test Light C516-1
- For inoperative RH mirror, while holding the exterior mirror control switch in the up position, monitor:
Positive Lead Measurement / Action Negative Lead C601A-2 Test Light C601A-1
Did the test light illuminate?
Yes CHECK the inoperative 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 . No For vehicles with base mirrors, GO to B2. For vehicles with heated mirrors, GO to B3. - B2 CHECK THE BASE EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Exterior Mirror Control Switch C535A.
- For inoperative RH mirror, measure:
Positive Lead Measurement / Action Negative Lead C601A-2 C535A-4
Is the resistance less than 3 ohms?
Yes INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to Glass, Frames and Mechanisms . No REPAIR the circuit. - B3 CHECK THE HEATED EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN
- Ignition OFF.
- Disconnect: Exterior Mirror Control Switch.
- Measure:
Positive Lead Measurement / Action Negative Lead C516-2 C504-4 Positive Lead Measurement / Action Negative Lead C601A-2 C504-4
Is the resistance less than 3 ohms?
Yes INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to Glass, Frames and Mechanisms . No REPAIR the circuit.
