Diagnostic Aids
The automatic day-night feature of the left outside rearview mirror may be inoperative due to the automatic day-night mirror signal circuit being shorted to battery positive voltage. When this condition occurs, both the left 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 perform the Door Systems Diagnostic System Check? | -- | Go to Step 2 | |
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 left outside rearview mirror. Does the left 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 7 | Go to Step 5 |
5 | Is the voltage measured in step 4 greater than the specified value? | 1.5 V | Go to Step 18 | Go to Step 6 |
6 | Measure the voltage between the signal circuit of the automatic day-night mirror and a good ground. Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 13 | Go to Step 12 |
7 |
Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 14 | Go to Step 8 |
8 | Is the voltage measured in step 7 greater than the specified value? | 1.5 V | Go to Step 18 | Go to Step 9 |
9 |
Is the resistance less than the specified value? | 3 ohms | Go to Step 10 | Go to Step 15 |
10 | Measure the resistance of the signal circuit of the automatic day-night mirror between the mirror face harness connector and a good ground. Is the resistance within the specified range? | OL | Go to Step 11 | Go to Step 15 |
11 | Measure the resistance of the low reference circuit of the automatic day-night mirror between the mirror face harness connector and the C4 harness connector. Is the resistance less than the specified value? | 3 ohms | Go to Step 17 | Go to Step 15 |
12 | Test the signal circuit of the automatic day-night mirror between the DDM and the inside 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 23 | Go to Step 16 |
13 | Test the low reference circuit of the automatic day-night mirror between the DDM and the inside 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 23 | Go to Step 16 |
14 | Inspect for poor connections at the harness connector of the left outside rearview mirror face. 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 23 | Go to Step 19 |
15 | Inspect for poor connections at the harness connector of the left 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 23 | Go to Step 20 |
16 | 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 23 | Go to Step 21 |
17 | Inspect for poor connections at the harness connector of the Driver Door Module (DDM). 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 23 | Go to Step 22 |
18 |
Important:: A short to battery positive voltage on the signal circuit of the automatic day-night mirror will cause permanent damage to both the left outside rearview mirror and the inside rearview mirror. Repair the short to voltage in the signal circuit of the automatic day-night mirror. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 23 | -- |
19 | Replace the left outside rearview mirror face. Refer to Outside Rearview Mirror Glass Replacement . Did you complete the replacement? | -- | Go to Step 23 | -- |
20 | Replace the left outside rearview mirror. Refer to Power Mirror Replacement . Did you complete the replacement? | -- | Go to Step 23 | -- |
21 | Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement in Stationary Windows. Did you complete the replacement? | -- | Go to Step 23 | -- |
22 | Replace the DDM. Refer to Door Control Module Replacement . Is the replacement complete? | -- | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
