Pinpoint Test

CHECK THE EXTERIOR MIRROR

NOTE: The following step uses a test light to simulate normal circuit loads. Use only the test light recommended in the Special Tools table at the beginning of this information. To avoid connector terminal damage, use the Flex Probe Kit for the test light probe connection to the vehicle. Do not use the test light probe directly on any connector. Refer to Special Tool(s) .

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:

LH Exterior Mirror			LH Exterior Mirror

C516			C516
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)	Test Light	1	CPM29 (GN)

For inoperative RH mirror, while holding the exterior mirror control switch in the up position, monitor:

RH Exterior Mirror			RH Exterior Mirror

C601			C601
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)	Test Light	1	CPM34 (WH/BN)

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 2 .
For vehicles with heated mirrors, GO to 3.

CHECK THE BASE EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Exterior Mirror Control Switch C535A.

For inoperative LH mirror, measure:

LH Exterior Mirror			Exterior Mirror Control Switch

C516			C535A
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)		4	CPM28 (BU/BN)

For inoperative RH mirror, measure:

RH Exterior Mirror			Exterior Mirror Control Switch

C601			C535A
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)		4	CPM28 (BU/BN)

Is the resistance less than 3 ohms?

Yes: INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to WINDOW CONTROL SWITCH .
No: REPAIR the circuit.

CHECK THE HEATED EXTERIOR MIRROR COMMON CIRCUIT FOR AN OPEN

Ignition OFF.
Disconnect: Exterior Mirror Control Switch.

Measure:

LH Exterior Mirror			Exterior Mirror Control Switch

C516			C504
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)		4	CPM28 (BU/BN)

RH Exterior Mirror			Exterior Mirror Control Switch

C601			C504
Pin	Circuit	Measurement / Action	Pin	Circuit
2	CPM28 (BU/BN)		4	CPM28 (BU/BN)

Is the resistance less than 3 ohms?

Yes: INSTALL a new exterior mirror control switch (integral to the master window control switch). REFER to WINDOW CONTROL SWITCH .
No: REPAIR the circuit.