Normal Operation: Notes
Under normal operation, the exterior mirror control switch uses circuit (L/G), (Y/V), (GY/O) or (V/O) to control mirror movement.
- When power is received through circuit (L/G)/(Y/V) and grounded through (GY), the LH/RH exterior mirror will operate LEFT.
- When ground is received through circuit (L/G)/(Y/V) and powered through (GY), the LH/RH exterior mirror will operate RIGHT.
- When power is received through circuit (GY/O)/(V/O) and grounded through (GY), the LH/RH exterior mirror will operate UP.
- When ground is received through circuit (GY/O)/(V/O) and powered through (GY), the LH/RH exterior mirror will operate DOWN.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Exterior mirror control switch
- Exterior mirror motor
- Exterior mirror
SIGNAL MIRROR FUNCTION SWITCH LOGIC - PINPOINT TEST 3
| PINPOINT TEST 3 | A SINGLE MIRROR DOES NOT FUNCTION WITH SWITCH LOGIC | ||
|---|---|---|---|
| STEP | INSPECTION | ACTION | |
| 1 | CHECK MIRROR MOVEMENT (LEFT/RIGHT)
|
Yes | Go to next step. |
| No | Go to step 3. | ||
| 2 | CHECK MIRROR MOVEMENT (UP/DOWN)
|
Yes | The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. TEST the system for normal operation. |
| No | Go to step 4. | ||
| 3 | CHECK THE VOLTAGE TO THE INOPERATIVE MIRROR
|
Yes | CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted 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. See EXTERIOR MIRROR . Otherwise, INSIALL a new exterior mirror motor. See EXTERIOR MIRROR MOTOR . TEST the system for normal operation. |
| No | Go to step 5. | ||
| 4 | CHECK THE VOLTAGE TO THE INOPERATIVE MIRROR
|
Yes | CHECK the LH or RH exterior mirror jumper harness between the vehicle harness and the exterior mirror motor for open or shorted 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. See EXTERIOR MIRROR . Otherwise, INSTALL a new exterior mirror motor. SeeEXTERIOR MIRROR MOTOR . TEST the system for normal operation. |
| No | Go to step 6. | ||
| 5 | CHECK CIRCUIT (L/G) OR CIRCUIT (Y/V) FOR AN OPEN
|
Yes | INSTALL a new exterior mirror control switch. See EXTERIOR MIRROR CONTROL SWITCH . TEST the system for normal operation. |
| No | REPAIR the circuit Test the system for normal operation. | ||
| 6 | CHECK CIRCUIT (GY/O) OR CIRCUIT (V/O) FOR AN OPEN
|
Yes | INSTALL a new exterior mirror control switch. See EXTERIOR MIRROR CONTROL SWITCH . TEST the system for normal operation: |
| No | REPAIR the circuit. TEST the system for normal operation. | ||