Diagnostic Aids
The LH outside rearview mirror may be inoperative due to the signal circuit of the LH Outside rearview mirror element being shorted to battery positive voltage. When the above condition occurs, the LH outside rearview mirror and inside rearview mirror will be in a darken state. Both mirrors will be damaged and need to be replaced.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
SCHEMATIC REFERENCE: Automatic Day-Night Mirrors Schematics | ||||
1 | Did you perform the Power Door Systems Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the inside rearview mirror darken? | -- | Go to Step 3 | |
3 | While shining a bright light into the sensor on the mirror face (facing the rear window), observe the LH outside rearview mirror. Does the LH outside rearview mirror darken? | -- | Go to Diagnostic Aids | Go to Step 4 |
4 |
Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 6 | Go to Step 5 |
5 | Measure the voltage between the signal circuit of the LH outside mirror element to a good ground. Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 11 | Go to Step 10 |
6 |
Is the voltage within the specified range? | 0.75-1.5 V | Go to Step 12 | Go to Step 7 |
7 |
Is the resistance less than the specified value? | 3 ohms | Go to Step 8 | Go to Step 13 |
8 | Measure the resistance between the signal circuit of the LH outside rearview mirror element to a good ground. Is the resistance within the specified range? | OL | Go to Step 9 | Go to Step 17 |
9 | Measure the resistance of the ground circuit of the LH outside rearview mirror element between the LH outside rearview mirror to the DDM. Is the resistance less than the specified value? | 3 ohms | Go to Step 15 | Go to Step 13 |
10 | Test the signal circuit of the LH outside rearview mirror element from the DDM to the inside rearview mirror for an open or short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find or correct the condition? | -- | Go to Step 20 | Go to Step 14 |
11 | Test the ground circuit of the LH outside rearview mirror element from the DDM to 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 20 | Go to Step 14 |
12 | Inspect for poor connections at the harness connector of the LH 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 20 | Go to Step 16 |
13 | Inspect for poor connections at the harness connector of the LH 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 20 | Go to Step 17 |
14 | 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 20 | Go to Step 18 |
15 | 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 20 | Go to Step 19 |
16 | Replace the LH outside rearview mirror face. Refer to Outside Rearview Mirror Glass Replacement . Did you complete the replacement? | -- | Go to Step 20 | -- |
17 | Replace the LH outside rearview mirror. Refer to Mirror Face Replacement - Outside Electrochromatic . Did you complete the replacement? | -- | Go to Step 20 | -- |
18 | Replace the inside rearview mirror. Refer to Inside Rearview Mirror Replacement in Stationary Windows. Did you complete the replacement? | -- | Go to Step 20 | -- |
19 | Replace the Driver Door Module (DDM). Refer to Door Control Module Replacement . Is the replacement complete? | -- | Go to Step 20 | -- |
20 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
