For 1990-2009 cars

Step | Action | Yes | No
--- | --- | --- | ---
1 | Perform the sunroof re-calibration. Does the system operate normally? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 2
2 |

1. Disconnect the sunroof switch harness connector.
2. Connect a test lamp from battery voltage to the ground circuit terminal in the switch harness connector.

Does the test lamp illuminate?

Go to Step 3

Go to Step 10

3 |

1. Turn the ignition ON.
2. Using a DMM, test for battery voltage on all of the switch signal circuits in the switch harness connector.

Is battery voltage present on all of the switch signal circuits?

Go to Step 8

Go to Step 4

4 | Is battery voltage present on any of the switch signal circuits? | Go to Step 9 | Go to Step 5
5 |

1. Disconnect the sunroof motor/actuator connector.
2. Connect a test lamp from the battery supply circuit terminal in the harness connector to a good ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 11

6 |

1. Connect a test lamp from the ignition signal circuit terminal in the sunroof motor/actuator harness connector to a good ground.
2. Turn the ignition ON.

Does the test lamp illuminate?

Go to Step 7

Go to Step 12

7 | Connect a test lamp from battery voltage to the ground circuit terminal in the sunroof motor/actuator harness connector. Does the test lamp illuminate? | Go to Step 15 | Go to Step 13
8 | Connect a fused jumper wire from each of the switch signal circuits in the switch harness connector to ground. Does the sunroof operate using a fused jumper wire in place of the switch? | Go to Step 14 | Go to Step 15
9 | Test the faulted switch signal circuit for an open or short to ground. Did you find and correct the condition? | Go to Step 18 | Go to Step 15
10 | Repair the sunroof switch ground circuit for an open or high resistance. Is the repair complete? | Go to Step 18 | --
11 | Repair the sunroof motor/actuator battery supply circuit for an open or short to ground. Is the repair complete? | Go to Step 18 | --
12 | Repair the sunroof motor/actuator ignition signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs . Is the repair complete? | Go to Step 18 | --
13 | Repair the sunroof motor/actuator ground circuit for an open or high resistance. Is the repair complete? | Go to Step 18 | --
14 | Inspect for a poor connections at the sunroof switch harness connector. Did you find and correct the condition? | Go to Step 18 | Go to Step 16
15 | Inspect for a poor connection at the sunroof motor/actuator harness connector. Did you find and correct the condition? | Go to Step 18 | Go to Step 17
16 | Replace the sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | Go to Step 18 | --
17 | Replace the sunroof motor. Did you complete the replacement? | Go to Step 18 | --
18 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 1