If the power sunroof system fuse is open and a short to ground in the accessory voltage circuit is not detected, the fault could be a short to ground in one of the power sunroof control circuits. This would open the power sunroof system fuse when the sunroof switch is pressed.
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Sunroof Schematics Connector End View Reference: Sunroof Connector End Views | |||
1 | Did you review the Power Sunroof Description and Operation and perform the necessary inspections? | Go to Step 2 | |
2 | Operate the power sunroof. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 5 |
4 | Connect a test lamp between the accessory voltage circuit and the ground circuit of the sunroof switch harness connector. Does the test lamp illuminate? | Go to Step 7 | Go to Step 14 |
Test the accessory voltage circuit of the sunroof switch for a short to ground or an open. Refer to Circuit Testing and Wiring Repairs. Did you find and correct the condition? | Go to Step 17 | Go to Step 6 | |
6 | Probe each of the sunroof motor control circuits of the sunroof switch harness connector with a test lamp that is connected to battery positive voltage. Did the test lamp illuminate at any of the sunroof motor control circuits? | Go to Step 12 | Go to Step 10 |
7 |
Did the test lamp illuminate? | Go to Step 8 | Go to Step 13 |
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 13 |
9 |
Does the test lamp illuminate? | Go to Step 11 | Go to Step 15 |
10 | Inspect for poor connections at the harness connector of the sunroof switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs. Did you find and correct the condition? | Go to Step 17 | Go to Step 15 |
11 | Inspect for poor connections at the harness connector of the sunroof actuator motor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs. Did you find and correct the condition? | Go to Step 17 | Go to Step 16 |
12 | Repair the short to ground in the sunroof motor control circuits. Refer to Wiring Repairs. Did you complete the repair? | Go to Step 17 | -- |
13 | Repair the open in the sunroof motor control circuit. Refer to Wiring Repairs. Did you complete the repair? | Go to Step 17 | -- |
14 | Repair the open in the sunroof switch ground circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 17 | -- |
15 | Replace the sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | Go to Step 17 | -- |
16 |
Important: Perform the sunroof motor synchronization procedure. Refer to the appropriate procedure. Replace the sunroof actuator motor. Refer to Sunroof Motor/Actuator Replacement . Did you complete the replacement? | Go to Step 17 | -- |
17 |
Did you correct the condition? | System OK | Go to Step 3 |