Automatic Day/Night Mirror Inoperative

*AUTOMATIC DAY/NIGHT MIRROR INOPERATIVE









Diagnostic Test

1. MEASURE AUTOMATIC DAY/NIGHT MIRROR FUSED B(+) CIRCUIT VOLTAGE

NOTE: Inspect Fuse 7 located in the Underhood Accessory Fuse Block. If the fuse is open, repair the cause of the open fuse before continuing.





Turn the ignition off.

Disconnect the Automatic Day/Night Mirror harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

Measure the voltage of the Fused B(+) circuit at the Automatic Day/Night Mirror harness connector.

Is the voltage above 10 volts?

Yes

- Go to 2

No

- Repair the Automatic Day/Night Mirror Fused B(+) circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

2. MEASURE AUTOMATIC DAY/NIGHT MIRROR GROUND CIRCUIT RESISTANCE





Turn the ignition off.

Measure the resistance between ground and the Automatic Day/Night Mirror Ground circuit.

Is the resistance below 5.0 ohms?

Yes

- Go to 3

No

- Repair the Ground circuit for an open.
- Perform BODY VERIFICATION TEST. Body Verification Test

3. MEASURE THE VOLTAGE OF THE BACKUP LAMP FEED CIRCUIT





Disconnect the Illumination Control Module harness connector.

NOTE: Check connectors - Clean/repair as necessary.

Turn the ignition on.

Put the automatic transmission shift lever assembly or the transmission gear shift lever into Reverse.

Measure the voltage of the Backup Lamp Feed circuit at the Automatic Day/Night Mirror harness connector.

Is battery voltage present?

Yes

- Repair the Automatic Day/Night Mirror Backup Lamp Feed circuit for a short to voltage.
- Perform BODY VERIFICATION TEST. Body Verification Test

No

- Replace the Automatic Day/Night Mirror.
- Perform BODY VERIFICATION TEST. Body Verification Test