Diagnostic Aids
The sunroof switch open vent signal circuit can cause the sunroof not to respond correctly, if it were an open or a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. If the circuits test OK, an intermittent or poor connection can also cause the sunroof not to operate normally. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference : Sunroof Schematics | ||||
1 | Did you perform the Power Sunroof Diagnostic System Check? | -- | Go to Step 2 | |
2 | Verify that the customer complaint is still present. Does the sunroof operate OK? | -- | Go to Diagnostic Aids | Go to Step 3 |
3 |
Is the voltage within the specified range? | 10-15 V | Go to Step 4 | Go to Step 5 |
4 | Connect a 3-amp fused jumper wire between the sunroof switch open vent signal circuit and the sunroof switch low reference circuit of the sunroof vent switch harness connector. Does the sunroof close? | -- | Go to Step 7 | Go to Step 6 |
5 | Test the sunroof switch open vent signal circuit of the sunroof vent switch for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 8 |
6 | Test the sunroof switch open vent signal circuit of the sunroof vent switch for a short to B+. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 11 | Go to Step 10 |
7 | Inspect for a poor connection at the harness connector of the sunroof switches. 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 11 | Go to Step 9 |
8 | Inspect for poor connection at the harness connector of the sunroof module. 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 11 | Go to Step 10 |
9 | Replace the sunroof vent switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
10 | Replace the sunroof module. Refer to Power Sunroof Express Module Replacement . Did you complete the replacement? | -- | Go to Step 11 | -- |
11 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
