Pinpoint Test B: A Single Mirror Is Inoperative
Rear View Mirrors - Exterior
Pinpoint Tests
Pinpoint Test B: A Single Mirror is Inoperative
Refer to Wiring Diagram Set 124, Power Mirrors for schematic and connector information. Diagrams By Number
Normal Operation
The exterior mirror control switch controls the LH exterior mirror motor movement by switching voltage and ground to circuits 33-AD8 (YE/BU), 34-AD7 (BU/RD) and 32-AD1(WH/RD)/32-AD6 (WH). The exterior mirror switch controls the RH exterior mirror motor movement by switching voltage and ground to circuits 33-AD11 (YE/VT), 34-AD10 (BU/YE) and 32-AD1 (WH/RD)/32-AD9 (WH/GN).
Mirror Movement
- When the LH/RH exterior mirror motor receives ground through circuit 33-AD8 (YE/BU)/33-AD11 (YE/VT) and power through circuit 32-AD1(WH/RD)/32-AD6 (WH)/32-AD9 (WH/GN), the LH/RH exterior mirror motor will operate left.
- When the LH/RH exterior mirror motor receives power through circuit 33-AD8 (YE/BU)/33-AD11 (YE/VT) and ground through circuit 32-AD1(WH/RD)/32-AD6 (WH)/32-AD9 (WH/GN), the LH/RH exterior mirror motor will operate right.
- When the LH/RH exterior mirror motor receives ground through circuit 34-AD7 (BU/RD)/34-AD10 (BU/YE) and power through circuit 32-AD1(WH/RD)/32-AD6 (WH)/32-AD9 (WH/GN), the LH/RH exterior mirror motor will operate downward.
- When the LH/RH exterior mirror motor receives power through circuit 34-AD7 (BU/RD)/34-AD10 (BU/YE) and ground through circuit 32-AD1(WH/RD)/32-AD6 (WH)/32-AD9 (WH/GN), the LH/RH exterior mirror motor will operate upward.
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
NOTICE: Use the correct probe adapter(s) from the Flex Probe Kit when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
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B1 CHECK THE LH EXTERIOR MIRROR OPERATION
- 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.
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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. TEST the system for normal operation.
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B3 CHECK COMMON CIRCUIT FOR AN OPEN
- Disconnect: RH Exterior Mirror C601 .
- Measure the resistance between exterior mirror control switch C527-3, circuit 32-AD1 (WH/RD) harness side and RH exterior mirror C601-1, circuit 32-AD9 (WH/GN) 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 or is OK, INSTALL a new exterior mirror. REFER to Exterior Mirror Exterior Mirror. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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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. TEST the system for normal operation.
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B5 CHECK COMMON CIRCUIT FOR AN OPEN
- Disconnect: LH Exterior Mirror C520.
- Measure the resistance between exterior mirror control switch C527-3, circuit 32-AD1 (WH/RD) harness side and LH exterior mirror C520-1, circuit 32-AD6 (WH) 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 or is OK, INSTALL a new exterior mirror. REFER to Exterior Mirror Exterior Mirror. TEST the system for normal operation.
No
REPAIR the circuit. TEST the system for normal operation.
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