Diagnostic Aids
The automatic day-night feature of the driver outside rearview mirror may be inoperative due to the signal circuit being shorted to battery positive voltage. When this condition occurs, both the driver outside rearview mirror and the inside rearview mirror will be in a darkened state. Both mirrors will be permanently damaged and will need to be replaced.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Outside Rearview Mirror Schematics | ||||
1 | Did you review the description and operation of the automatic day-night feature of the driver outside rearview mirror? | -- | Go to Step 2 | Go to Symptoms - Doors |
2 |
Does the inside rearview mirror darken? | -- | Go to Step 3 | Go to Automatic Day-Night Mirrors Inoperative in Stationary Windows |
3 | While shining a bright light into the sensor on the face of the inside rearview mirror, observe the driver outside rearview mirror. Does the driver outside rearview mirror darken? | -- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 4 |
4 |
Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 9 | Go to Step 5 |
5 | Is the voltage greater than the specified value? | 1.5 V | Go to Step 11 | Go to Step 6 |
6 | Measure the voltage between the signal circuit of the driver outside rearview mirror and a good ground. Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 8 | Go to Step 7 |
7 | Test the signal circuit of the driver outside rearview mirror for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find or correct the condition? | -- | Go to Step 14 | Go to Step 10 |
8 | Test the low reference circuit of the driver outside rearview mirror for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find or correct the condition? | -- | Go to Step 14 | Go to Step 10 |
9 | Inspect for poor connections at the harness connector of the driver outside rearview mirror. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find or correct the condition? | -- | Go to Step 14 | Go to Step 12 |
10 | 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 or correct the condition? | -- | Go to Step 14 | Go to Step 13 |
11 |
Important:: A short to battery positive voltage on the signal circuit of the driver outside rearview mirror will cause permanent damage to both the driver outside rearview mirror face and the inside rearview mirror. Repair the short to voltage in the signal circuit of the driver outside rearview mirror. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 14 | -- |
12 | Replace the driver outside rearview mirror. Refer to Outside Rearview Mirror Replacement . Did you complete the replacement? | -- | Go to Step 14 | -- |
13 |
Important: Perform the Compass Calibration and Magnetic Variance in Stationary Windows when replacing the inside rearview mirror. Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement in Stationary Windows. Did you complete the replacement? | -- | Go to Step 14 | -- |
14 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
