For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
1 | Was the power sunroof system check performed? | -- | Go to Step 2 | Go to Power Sunroof System Check
2 |

1. Turn the ignition switch on.
2. Using a test lamp, connect by backprobing between C 200 terminal A9 and ground.

Is the test light on?

--

Go to Step 8

Go to Step 6

3 |

1. Remove the interior lamp and multi-function switch from the headliner and leave the interior lamp and multi-function switch harness connector connected.
2. Using a J 39200 digital multimeter (DMM), measure the voltage by backprobing between the interior lamp and multi-function switch connector C4 terminal H and ground.

Is the voltage measured within the specified range?

4.5-5.5V

Go to Step 4

Go to Step 19

4 | Using a J 39200 DMM, measure the voltage by backprobing between the interior lamp and multi-function switch harness connector C4 terminal F and ground. Is the voltage measured within the specified range? (Note: if the J 39200 DMM displays B+, then go to step 39). | 4.5-5.5V | Go to Step 5 | Go to Step 23
5 | Using a J 39200 DMM, measure the voltage by backprobing between the interior lamp and multi-function switch harness connector C4 terminals H and C. Is the voltage measured within the specified range? | 4.5-5.5V | Go to Step 10 | Go to Step 26
6 | Check the SUNROOF Fuse located in the fuse block. Is the SUNROOF Fuse open? | -- | Go to Step 7 | Go to Step 8
7 | Repair short to ground in CKT 541. Is the repair complete? | -- | Go to Power Sunroof System Check | --
8 | Using a test lamp, connect by backprobing between C398 terminal A and ground. Is the test lamp on? | -- | Go to Step 9 | Go to Step 28
9 |

1. Turn the ignition switch off.
2. Disconnect the sunroof module electrical connector C2.
3. Turn the ignition switch on.
4. Using a test lamp and a J 35616 kit, connect between the sunroof module harness connector C2 terminals B and D.

Is the test lamp on?

--

Go to Step 3

Go to Step 29

10 |

1. Connect a test lamp by backprobing between the sunroof module harness connector C2 terminal A and ground.
2. While observing the test lamp, press and hold close on the interior lamp and multi-function switch.

Is the test lamp on?

--

Go to Step 11

Go to Step 22

11 |

1. Connect a test lamp by backprobing between the sunroof module harness connector C2 terminal C and ground.
2. While observing the test lamp, press and hold open on the interior lamp and multi-function switch.

Is the test lamp on?

--

Go to Step 14

Go to Step 22

12 |

1. Turn the ignition switch off.
2. Disconnect the sunroof actuator connector C3.
3. Connect a test lamp between the sunroof actuator harness connector C3 terminals A and B.
4. While observing the test light, press and hold close on the interior lamp and multi-function switch.

Is the test lamp on?

--

Go to Step 13

Go to Step 30

13 |

1. Leave the test lamp connected (from previous step).
2. While observing the test lamp, press and hold open on the interior lamp and multi-function switch.

Is the test lamp on?

--

Go to Step 18

Go to Step 30

14 |

1. Turn the ignition switch off.
2. Reconnect the sunroof module.
3. Turn the ignition switch on.
4. Using a J 39200 DMM, measure the voltage by backprobing between the limit switch module harness connector C5 terminal C and ground.

Is the voltage measured within the specified range? (Note: if voltage measured is B+, then go to step 39).

4.5-5.5V

Go to Step 15

Go to Step 31

15 | Using a J 39200 DMM, measure the voltage by backprobing between the limit switch module harness connector C4 terminal C and ground. Is the voltage measured within the specified range? (Important: if voltage measured is B+, then go to step 39). | 4.5-5.5V | Go to Step 16 | Go to Step 34
16 | Using a J 39200 DMM, measure the voltage by backprobing between the limit switch module harness connector C5 terminal A and ground. Is the voltage measured within the specified range? (Important: if voltage measured is B+, then go to step 39). | 4.5-5.5V | Go to Step 17 | Go to Step 36
17 | Using a J 39200 DMM, measure the voltage by backprobing between the limit switch module harness connector C4 terminal B and connector C5 terminal A. Is the voltage measured within the specified range? | 4.5-5.5V | Go to Step 12 | Go to Step 38
18 | Replace the sunroof actuator. Refer to Sunroof Actuator Replacement . Is the repair complete? | -- | Go to Power Sunroof System Check | --
19 |

1. Disconnect the interior lamp and multi-function switch electrical connector.
2. Using a J 39200 DMM and a J 35616 kit, measure the voltage between the interior lamp and multi-function switch harness connector C4 terminal H and ground.

Is the voltage measured within the specified range?

4.5-5.5V

Go to Step 21

Go to Step 20

20 | Locate open or short to ground in CKT 100. Is there an open or short to ground in CKT 100? | -- | Go to Step 40 | Go to Step 22
21 | Replace the interior lamp and multi-function switch. Refer to Sunroof Switch Replacement . Is the repair complete? | -- | Go to Power Sunroof System Check | --
22 | Replace the sunroof module. Refer to Power Sunroof Module Replacement . Is the repair complete? | -- | Go to Power Sunroof System Check | --
23 |

1. Disconnect the interior lamp and multi-function switch electrical connector.
2. Using a J 39200 DMM and a J 35616 kit, measure the voltage between the interior lamp and multi-function switch harness connector terminal F and ground.

Is the measured voltage within the specified value?

4.5-5.5V

Go to Step 21

Go to Step 24

24 | Repair open or short to ground in CKT 110. Is the repair complete? | -- | Go to Power Sunroof System Check | --
25 | Repair the open or short to ground. Is the repair complete? | -- | Go to Power Sunroof System Check | --
26 |

1. Turn the ignition switch off.
2. Disconnect the interior lamp and multi-function switch electrical connector.
3. Disconnect the sunroof module electrical connector C1.
4. Using a J 39200 DMM, measure the resistance between the interior lamp and multi-function switch harness connector terminal G and the sunroof module harness connector C1 terminal 5.

Is the measured resistance within the specified range?

Less than 2ohms

Go to Step 22

Go to Step 27

27 | Repair poor connection or open in CKT 128. Is the repair complete? | -- | Go to Power Sunroof System Check | --
28 | Repair poor connection or open in CKT 541. Is the repair complete? | -- | Go to Power Sunroof System Check | --
29 | Repair poor connection or open in CKT 650. Is the repair complete? | -- | Go to Power Sunroof System Check | --
30 | Repair poor connection or open in CKT 127 or CKT 129. Is the repair complete? | -- | Go to Power Sunroof System Check | --
31 |

1. Disconnect the limit switch module electrical connector C4 and C5.
2. Using a J 39200 DMM and a J 35616 kit, measure the voltage between the limit switch module harness connector C5 terminal A and ground.

Is the voltage measured within the specified range?

4.5-5.5V

Go to Step 33

Go to Step 32

32 | Locate open or short to ground in the RED wire between the sunroof module harness connector C1 terminal 2 and the limit switch module harness connector C5 terminal A. Is there an open or short to ground in the RED wire? | -- | Go to Step 41 | Go to Step 22
33 | Replace the limit switch module. Is the repair complete? | -- | Go to Power Sunroof System Check | --
34 |

1. Disconnect the limit switch module harness connector C4 and C5.
2. Using a J 39200 DMM and a J 35616 kit, measure the voltage between the limit switch module harness connector C4 terminal C and ground.

Is the voltage measured within the specified range?

4.5-5.5V

Go to Step 33

Go to Step 35

35 | Locate open or short to ground in WHT wire between the sunroof module harness connector C1 terminal 8 and the limit switch module harness connector C4 terminal C. Is there an open or short to ground in the WHT wire? | -- | Go to Step 42 | Go to Step 22
36 |

1. Disconnect the limit switch module harness connector C4 and C5.
2. Using a J 39200 DMM and a J 35616 kit, measure the voltage between the limit switch module harness connector C5 terminal A and ground.

Is the voltage measured within the specified range?

5.5-6.5V

Go to Step 33

Go to Step 37

37 | Locate open or short to ground in the RED wire between the sunroof module harness connector C1 terminal 2 and the limit switch module harness connector C5 terminal A. Is there an open or short to ground in the RED wire? | -- | Go to Step 43 | Go to Step 22
38 | Locate open in the BLK/WHT wire between the sunroof module harness connector C1 terminal 1 and the limit switch module harness connector C4 terminal B and connector C5 terminal C. Is there an open in the BLK/WHT wire? | -- | Go to Step 41 | Go to Step 22
39 | Repair the short to B+. Is the repair complete? | -- | Go to Power Sunroof System Check | --
40 | Repair the open or short to ground in CKT 100. Is the repair complete? | -- | Go to Power Sunroof System Check | --
41 | Repair open or short to ground in the BLK/WHT wire between the sunroof module harness connector C1 terminal 1 and the limit switch module harness connector C4 terminal B and connector C5 terminal C. Is the repair complete? | -- | Go to Power Sunroof System Check | --
42 | Repair open or short to ground in the WHT wire between the sunroof module harness connector C1 terminal 8 and the limit switch module harness connector C4 terminal C. Is the repair complete? | -- | Go to Power Sunroof System Check | --
43 | Repair open or short to ground in the RED wire between the sunroof module harness connector C1 terminal 2 and the limit switch module harness connector C5 terminal A. Is the repair complete? | -- | Go to Power Sunroof System Check | --