Power Mirror Switch Function Test (With DPMS)

Power Mirror Switch Function Test

'08-10 Touring models

NOTE:

- For additional troubleshooting information, refer to Driving Position Memory System (DPMS) Locations.
- For the '08-10 Touring models, refer to the circuit diagram.

1. Remove the driver's door switch trim Service and Repair.





2. Disconnect the 13P connector (A) from the power mirror switch (B), and inspect the terminals. If OK, go to step 3.

3. Choose the appropriate test based on the symptom:

- Both mirrors don't work, go to step 4.
- Left mirror doesn't work, go to step 6.
- Right mirror doesn't work, go to step 7.
- Defoggers don't work, go to step 8.

Both mirrors

4. Reconnect the power mirror switch connector, and measure the voltage between terminal No. 2 and body ground with the ignition switch to ON (II) while operating the power mirror switch.

There should be battery voltage.

- If there is no voltage, check for:
- Blown No. 30 (10 A) fuse in the driver's under-dash fuse/relay box.
- An open 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 operating the power mirror switch.

There should be less than 0.2 V.

- If there is more than 0.2 V, check for:
- An open in the BLK wire.
- Poor ground (G601) or an open in the ground wire.
- If there is less than 0.2 V, check both mirrors individually as described in step 6 and 7.

Left mirror

6. Connect terminal No. 2 to terminal No. 10, and terminal No. 5 (or No. 12) to body ground with jumper wires. The left mirror should tilt down (or swing left) with the ignition switch to ON (II).

- If the mirror does not tilt down (or does not swing left), check for an open in the BLU/BLK (or RED) wire between the left mirror and the 13P connector.
- If the mirror neither tilts down nor swings left, check for an open in the WHT/RED wire.
- If the wires are OK, check the left mirror actuator.
- If the mirror works properly, check the mirror switch.

Right mirror

7. Connect terminal No. 2 to terminal No. 11, and terminal No. 5 (or No. 13) to body ground with jumper wires. The right mirror should tilt down (or swing left) with the ignition switch to ON (II).

- If the mirror does not tilt down (or does not swing left), check for an open in the BLU/BLK (or BLU/WHT) wire between the right mirror and the 13P connector. If the wire is OK, check the right mirror actuator.
- If the mirror neither tilts down nor swings left, check for an open in the GRN/WHT wire.
- If the wires are OK, check the left mirror actuator.
- If the mirror works properly, check the mirror switch.

Defogger

8. Connect terminals No. 1 and No. 8 with a jumper wire, and check for voltage between terminal No. 1 and body ground. There should be battery voltage and both mirrors should warm up with the ignition switch to ON (II).

- If there is no or neither warms up, check for:
- An open in the BLK/YEL and ORN wires.
- Blown No. 30 (10 A) fuse in the driver's under-dash fuse/relay box.
- Poor ground (G504, G601) or an open in the ground wire.
- If only one fails to warm up, check its defogger.
- If both warm up, check the defogger switch.