Diagnostic Aids
Refer to Testing for Intermittent Conditions and Poor Connections and Testing for Electrical Intermittents in Wiring Systems.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Power Sunroof Diagnostic System Check? | -- | Go to Step 2 | |
2 |
Does the sunroof close? | -- | Go to Diagnostic Aids | Go to Step 3 |
3 | Test the 20 amp SUNRF fuse for an open. Is the fuse open? | -- | Go to Step 12 | Go to Step 4 |
4 |
Does the the test lamp illuminate? | -- | Go to Step 5 | Go to Step 8 |
5 | Connect a test lamp between the slide input circuit of the sunroof switch and a good ground. Does the test lamp illuminate? | -- | Go to Step 6 | Go to Step 7 |
6 | Using a 3 amp fused jumper wire, simultaneously jumper the sunroof switch harness slide input and vent input to the sunroof switch ground circuit. Did the power sunroof close? | -- | Go to Step 22 | Go to Step 9 |
7 | Test the slide input circuit of the sunroof switch for a open circuit or a short to ground. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 10 |
8 | Test the vent input circuit of the sunroof switch for an open circuit short to ground . Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 10 |
9 | Test the ground circuit of the sunroof switch for an open circuit or short to voltage. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 13 |
10 |
Does the test lamp illuminate? | -- | Go to Step 11 | Go to Step 12 |
11 | Connect a test lamp between the ignition positive voltage circuit and ground circuit of the sunroof control module. Did the test lamp illuminate? | -- | Go to Step 23 | Go to Step 20 |
12 | Test the ignition positive voltage feed circuit of the sunroof control module for a short to ground or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 23 |
13 | Test the slide input and vent input for a short to each other. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 14 |
14 |
Does the test lamp illuminate? | -- | Go to Step 15 | Go to Step 16 |
15 |
Does the test lamp illuminate? | -- | Go to Step 24 | Go to Step 21 |
16 | Test the forward input circuit for a short to ground or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 17 |
17 |
Does the voltage measure near the specified value? | 5 V | Go to Step 19 | Go to Step 18 |
18 | Test the input circuit of the limit switch for a short to ground or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 23 |
19 | Test the ground circuit of the limit switch for a short to voltage or an open. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 23 |
20 | Test the ground circuit of the sunroof control module for a short to voltage or an open. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 23 |
21 | Test the reverse input circuit for an open circuit. Refer to Circuit Testing in Wiring Systems. Did you find and correct the condition? | -- | Go to Step 28 | Go to Step 23 |
22 | Inspect for poor connections at the harness connector of the power sunroof switch. 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 28 | Go to Step 25 |
23 | Inspect for poor connections at the harness connector of the power sunroof control 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 28 | Go to Step 26 |
24 | Inspect for poor connections at the harness connector of the power sunroof motor assembly. 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 28 | Go to Step 27 |
25 | Replace the power sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | -- | Go to Step 28 | -- |
26 | Replace the power sunroof control module. Refer to Power Sunroof Express Module Replacement . Did you complete the replacement? | -- | Go to Step 28 | -- |
27 |
Important: Inspect the power sunroof assembly for binding or mechanical failure. Replace the power sunroof motor assembly. Refer to Power Sunroof Motor Replacement . Did you complete the replacement? | -- | Go to Step 28 | -- |
28 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
