The automatic day-night feature of the inside rearview mirror may not operate properly or become inoperative due to an intermittent short to battery positive voltage in the backup lighting system.
Step | Action | Value(s) | Yes | No |
---|---|---|---|---|
Schematic Reference: Inside Rearview Mirror Schematics | ||||
1 | Did you review the operation of the automatic day-night feature of the inside rearview mirror and perform the necessary inspections? | -- | Go to Step 2 | |
2 |
Does the inside rearview mirror darken? | -- | Go to Diagnostic Aids | Go to Step 3 |
3 |
Is the resistance less than the specified value? | 3 ohms | Go to Step 4 | Go to Step 9 |
4 |
Is the voltage within the specified range? | B+ | Go to Step 5 | Go to Step 10 |
5 |
Is the voltage less than the specified value? | 0.5 V | Go to Step 6 | Go to Backup Lamps Always On in Lighting Systems |
6 |
Is the voltage within the specified range? | B+ | Go to Step 8 | Go to Step 7 |
7 | Test the backup lamp supply voltage circuit of the inside rearview mirror for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Backup Lamps Inoperative in Lighting Systems |
8 | Inspect for poor connections at the harness connector of the inside rearview mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 12 | Go to Step 11 |
9 | Repair an open or high resistance in the ground circuit of the inside rearview mirror. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 12 | -- |
10 | Repair an open or short to ground in the ignition 1 voltage circuit of the inside rearview mirror. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 12 | -- |
11 |
Important: Perform the Compass Calibration and Variance procedure for inside rearview mirror with compass. Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement . Did you complete the replacement? | -- | Go to Step 12 | -- |
12 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |