Diesel Data: Automotive Repair

Power Mirror Function Test




Power Mirror Function Test

1. Remove the power window master switch panel (A).





2. Disconnect the 13P connector (B) from the power mirror switch (C).

3. Choose the appropriate test based on the symptom:

- Both mirrors do not work, go to step 4.
- Left mirror do not work, go to step 6.
- Right mirror do not work, go to step 7.

Both mirrors

4. Measure the voltage between terminal No. 2 and body ground with the ignition switch to ON (II).

There should be battery voltage.

- If there is no battery voltage, check for:
- Blown No. 14 (10 A) fuse in the under-dash fuse/relay box.
- An open or high resistance in the BLK/YEL wire.
- If there is battery voltage, go to step 5.

5. Measure the voltage between terminal No. 6 and body ground while you operate the mirrors.

There should be less than 0.2 V.

- If there is 0.2 V or more, check for:
- An open or high resistance in the BLK wire.
- Poor ground (G501).
- If the voltage is as specified, check both mirrors individually as described in step 6 and step 7.

Left mirror

6. With the ignition switch turned to ON (II), connect terminals No. 2 and No. 10, and terminals No. 5 (then No. 12) and No. 6 with jumper wires. The left mirror should tilt down, then swing left.

- If the mirror does not tilt down (or does not swing left), check for an open or high resistance in the GRN/WHT (or BLU/WHT) wire between the left mirror and the 13P connector. If the wire is OK, check the left mirror actuator Power Mirror Actuator Test.
- If the mirror neither tilts down nor swings left, repair the BLU/BLK wire.
- If the mirror works properly, check the mirror switch Service and Repair.

Right mirror

7. With the ignition switch turned to ON (II), connect terminals No. 2 and No. 11, and terminals No. 5 (then No. 13) and No. 6 with jumper wires. The right mirror should tilt down, then swing left.

- If the mirror does not tilt down (or does not swing left), check for an open or high resistance in the GRN/WHT (or WHT/RED) wire between the right mirror and the 13P connector. If the wire is OK, check the right mirror actuator Power Mirror Actuator Test.
- If the mirror neither tilts down nor swings left, repair the RED/YEL wire.
- If the mirror works properly, check the mirror switch Service and Repair.