For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Inspect the sunroof fuse. Is the fuse open? | -- | Go to Step 2 | Go to Step 3
2 | Repair the short to ground in CKT 541. Is the repair complete? | -- | System OK | --
3 | Use a test lamp in order to backprobe the sunroof module harness connector C2 terminal B to ground. Does the test lamp light? | -- | Go to Step 5 | Go to Step 4
4 |

1. Repair a poor connection or an open in CKT 541.
2. Retest the system.

Is the repair complete?

--

System OK

--

5 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof switch.
3. Turn the ignition switch to RUN.
4. Use a J 39200 digital multimeter (DMM) in order to measure the voltage by backprobing between B+ and the sunroof switch harness connector C4 terminal G.

Is the voltage level within the specified range?

9-14V

Go to Step 6

Go to Step 7

6 |

1. Turn the ignition switch to LOCK.
2. Reconnect the sunroof switch.
3. Turn the ignition switch to RUN.
4. Use a J 39200 DMM in order to measure the voltage by backprobing between B+ and the sunroof switch harness connector C4 terminal H.

Is the voltage level within the specified range?

9-14V

Go to Step 8

Go to Step 9

7 | Use a J 39200 DMM in order to measure the voltage by backprobing between B+ and the sunroof module connector C1 terminal 5. Is the voltage level within the specified range? | 9-14V | Go to Step 10 | Go to Step 11
8 |

1. Use a J 39200 DMM in order to measure the voltage by backprobing between B+ and the sunroof switch harness connector terminal F.
2. Press the sunroof switch CLOSED.

Is the voltage level within the specified range?

9-14V

Go to Step 12

Go to Step 9

9 |

1. Replace the sunroof switch. Refer to Sunroof Switch Replacement in Roof.
2. Retest the system.

Is the repair complete?

--

System OK

--

10 |

1. Repair a poor connection or an open in CKT 128.
2. Retest the system.

Is the repair complete?

--

System OK

--

11 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof module connector C2.
3. Use a J 39200 DMM in order to backprobe between B+ and the sunroof module harness connector C2 terminal D.

Is the voltage level within the specified range?

9-14V

Go to Step 13

Go to Step 14

12 | Use a J 39200 DMM in order to measure the voltage by backprobing between the sunroof switch harness connector C4 terminal H and ground. Does the voltage equal the specified value? | 5V | Go to Step 15 | Go to Step 16
13 |

1. Replace the sunroof module. Refer to Power Sunroof Module Replacement in Roof.
2. Retest the system.

Is the repair complete?

--

System OK

--

14 |

1. Repair a poor connection or an open in CKT 650 between the sunroof module harness connector C2 terminal D and G302.
2. Retest the system.

Is the repair complete?

--

System OK

--

15 | Use a J 39200 DMM in order to measure the voltage by backprobing between the sunroof switch harness connector C4 terminal F and ground. Does the voltage equal the specified value? | 5V | Go to Step 17 | Go to Step 18
16 | Use a J 39200 DMM in order to backprobe between the sunroof module harness connector C1 terminal 6 and ground. Does the voltage equal the specified value? | 5V | Go to Step 22 | Go to Step 21
17 |

1. Turn the ignition switch to LOCK.
2. Reconnect the sunroof switch.
3. Disconnect the sunroof actuator connector C3.
4. Turn the ignition switch to RUN.
5. Use a J 39200 DMM in order to backprobe between the sunroof actuator harness connector C3 terminals A and B
6. Press the sunroof switch OPEN and then CLOSED.

Are the voltage levels within the specified range?

9-14V

Go to Step 19

Go to Step 30

18 | Use a J 39200 DMM in order to measure voltage by backprobing between the sunroof module harness connector C1 terminal 7 and ground. Does the voltage equal the specified value? | 5V | Go to Step 20 | Go to Step 28
19 |

1. Replace the sunroof actuator. Refer to Sunroof Actuator Replacement in Roof.
2. Retest the system.

Is the repair complete?

--

System OK

--

20 |

1. Repair a poor connection or an open in CKT 110.
2. Retest the system.

Is the repair complete?

--

System OK

--

21 |

1. Repair a poor connection or an open in CKT 100.
2. Retest the system.

Is the repair complete?

--

System OK

--

22 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof module connector C1.
3. Use a J 39200 DMM in order to measure the voltage by backprobing between B+ and the sunroof module harness connector C1 terminal 6.

Is voltage present?

--

Go to Step 23

--

23 |

1. Repair a short to ground in CKT 100.
2. Retest the system.

Is the repair complete?

--

System OK

--

24 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof module connector C2.
3. Turn the ignition switch to RUN.
4. Use a J 39200 DMM in order to measure the voltage by backprobing between the sunroof module connector C2 terminal B and terminal D.

Is the voltage level within the specified range?

9-14V

Go to Step 13

Go to Step 25

25 | Use a J 39200 DMM in order to measure voltage by backprobing between the sunroof module harness connector C2 terminal B and ground. Is the voltage level within the specified range? | 9-14V | Go to Step 26 | Go to Step 27
26 |

1. Repair a poor connection or an open in CKT 650 between the sunroof module connector C2 terminal D and G 302.
2. Retest the system.

Is the repair complete?

--

System OK

--

27 |

1. Repair a poor connection or an open in CKT 541.
2. Retest the system.

Is the repair complete?

--

System OK

--

28 | Use a J 39200 DMM in order to measure voltage by backprobing between B+ and the sunroof module harness connector C1 terminal 7. Is the voltage level within the specified range? | 9-14V | Go to Step 29 | Go to Step 24
29 |

1. Repair a short to ground in CKT 110.
2. Retest the system.

Is the repair complete?

--

System OK

--

30 |

1. Turn the ignition to LOCK.
2. Disconnect the sunroof module connector C2.
3. Use a J 39200 DMM in order to measure the voltage by backprobing between the sunroof actuator connector C3 terminal A and ground.

Is voltage present?

--

Go to Step 31

Go to Step 32

31 |

1. Repair a short to B+ in CKT 127.
2. Retest the system.

Is the repair complete?

--

System OK

--

32 | Use a J 39200 DMM in order to measure the voltage between B+ and the sunroof actuator harness connector C3 terminal A Is voltage present? | -- | Go to Step 33 | Go to Step 34
33 |

1. Repair a short to ground in CKT 127.
2. Retest the system.

Is the repair complete?

--

System OK

--

34 | Use a J 39200 DMM in order to test the continuity in CKT 127 between the sunroof module harness connector C2 terminal C and the sunroof actuator connector C3 terminal A. Is there continuity in CKT 127? | -- | Go to Step 35 | Go to Step 36
35 | Use a J 39200 DMM in order to measure the voltage between the sunroof actuator harness connector C3 terminal B and ground. Is there voltage? | -- | Go to Step 37 | Go to Step 38
36 |

1. Repair a poor connection or an open in CKT 127.
2. Retest the system?

Is the repair complete?

--

System OK

--

37 |

1. Repair a short to B+ in CKT 129.
2. Retest the system.

Is the repair complete?

--

System OK

--

38 | Use a J 39200 DMM in order to measure the voltage between B+ and the sunroof actuator harness connector C3 terminal B. Is voltage present? | -- | Go to Step 39 | Go to Step 40
39 |

1. Repair a short to ground in CKT 129.
2. Retest the system.

Is the repair complete?

--

System OK

--

40 | Use a J 39200 DMM in order to test the continuity in CKT 129 between the sunroof module connector C2 terminal A and the sunroof actuator harness connector C3 terminal B. Is there continuity in CKT 129? | -- | Go to Step 41 | Go to Step 42
41 |

1. Turn the ignition to LOCK.
2. Reconnect the sunroof module connector C2.
3. Turn the ignition switch to RUN.
4. Use a J 39200 DMM in order to backprobe between the sunroof module harness connector C1 terminal 8 and ground.

Is the voltage level within the specified range?

5V

Go to Step 44

Go to Step 43

42 |

1. Repair a poor connection or an open in CKT 129.
2. Retest the system.

Is the repair complete?

--

System OK

--

43 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof module connector C1.
3. Disconnect the sunroof actuator connector C4.
4. Use a J 39200 DMM in order to test the continuity to ground in the RED wire.

Is there continuity to ground in the RED wire?

--

Go to Step 53

Go to Step 54

44 | Use a J 39200 DMM in order to backprobe between the sunroof module harness connector C1 terminal 2 and ground. Does the voltage equal the specified value? | 5V | Go to Step 45 | Go to Step 13
45 | Use a J 39200 DMM in order to backprobe between B+ and the sunroof actuator connector C4 terminal A. Is the voltage level within the specified range? | 9-14V | Go to Step 46 | Go to Step 47
46 |

1. Turn the ignition switch to LOCK.
2. Disconnect the sunroof module connector C1.
3. Use a J 39200 DMM in order to backprobe between the sunroof module harness connector C1 terminal 2 and ground.

Is voltage present?

--

Go to Step 48

Go to Step 49

47 | Use a J 39200 DMM in order to backprobe between B+ and the sunroof actuator harness connector C5 and terminal C. Is the voltage within the specified range? | 9-14V | Go to Step 19 | Go to Step 50
48 |

1. Repair a short to B+ in the YEL wire.
2. Retest the system.

Is the repair complete?

--

System OK

--

49 |

1. Repair a poor connection or an open in the YEL wire.
2. Retest the system.

Is the repair complete?

--

System OK

--

50 | Use a J 39200 DMM in order to backprobe between B+ and the sunroof actuator harness connector C4 terminal B. Is the voltage level within the specified range? | 9-14V | Go to Step 51 | Go to Step 52
51 |

1. Repair a poor connection or an open in the DK BLU wire between S399 and the sunroof actuator connector C5 terminal C.
2. Retest the system.

Is the repair complete?

--

System OK

--

52 | Use a J 39200 DMM in order to backprobe between B+ and the sunroof module connector C1 terminal 1. Is the voltage level within the specified range? | 9-14V | Go to Step 55 | Go to Step 13
53 |

1. Repair a short to ground in the RED wire.
2. Retest the system.

Is the repair complete?

--

System OK

--

54 |

1. Repair a poor connection or an open in the DK BLU wire between the sunroof module connector C1 terminal 1 and S399.
2. Retest the system.

Is the repair complete?

--

System OK

--

55 |

1. Reconnect the sunroof module connector C1.
2. Turn the ignition switch to RUN.
3. Use a J 39200 DMM in order to measure the voltage between the sunroof actuator connector C4 terminal C and ground.

Is the voltage level within the specified range?

5V

Go to Step 19

Go to Step 13