Test C: A Single Mirror Does Not Function With Switch Logic
PINPOINT TEST C: A SINGLE MIRROR DOES NOT FUNCTION WITH SWITCH LOGICC1 Continued:
C1-C3:
C3 Continued:
NOTE: For vehicles equipped with memory mirrors, GO to Pinpoint Test D. Test D: The Memory Mirror Is Inoperative
Normal Operation
The exterior mirror control switch uses circuits CPM16 (BN/BU), CPM17 (BU/GN) and CPM23 (GY) to control LH exterior mirror movement. For the RH exterior mirror, the exterior mirror switch uses circuits CPM20 (BN/WH), CPM21 (YE/VT) and CPM23 (GY) to control the exterior mirror movement.
Mirror Movement
- When ground is received through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate left.
- When power is received through circuit CPM16 (BN/BU)/CPM20 (BN/WH) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate right.
- When ground is received through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate up.
- When power is received through circuit CPM17 (BU/GN)/CPM21 (YE/VT) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate down.
Possible Causes
- An open in circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) or CPM23 (GY)
- A short to ground in circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) or CPM23 (GY)
- A short to voltage in circuits CPM16 (BN/BU), CPM17 (BU/GN), CPM20 (BN/WH), CPM21 (YE/VT) or CPM23 (GY)
- Exterior mirror motor
- Exterior mirror