Diagnostic Aids
Refer to Testing for Electrical Intermittents and Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Schematic Reference: Sunroof Schematics | ||||
1 | Did you perform A Diagnostic System Check - Power Sunroof? | -- | Go to Step 2 | |
2 |
Does the sunroof open to the EXPRESS OPEN position? | -- | Go to Diagnostic Aids | Go to Step 3 |
3 | Test the 20 amp RAP fuse in the rear fuse block. Was the fuse blown? | -- | Go to Step 7 | Go to Step 4 |
4 |
Does the sunroof open? | -- | Go to Step 5 | Go to Step 9 |
5 | Test for a poor connection / terminal tension at the power sunroof switch harness connector. 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 24 | Go to Step 6 |
6 | Replace the power sunroof switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | -- | Go to Step 24 | -- |
7 |
Is the resistance equal to the specified range? | OL | Go to Symptoms - Retained Accessory Power in Retained Accessory Power | Go to Step 8 |
8 | Repair short to ground in power sunroof control module RAP relay switch supply voltage circuit. Did you find and correct the condition? | -- | Go to Step 24 | -- |
9 |
Is the resistance within the specified range? | 1-3 ohms | Go to Step 10 | Go to Step 11 |
10 | Measure the resistance between the sunroof switch express signal terminal of the power sunroof switch harness connector and the sunroof switch express signal terminal of the power sunroof control module harness connector. Is the resistance within the specified range? | 1-3 ohms | Go to Step 12 | Go to Step 11 |
11 | Repair the open circuit or short to ground between the power sunroof switch and the power sunroof control module. Did you find and correct the condition? | -- | Go to Step 24 | -- |
12 | Measure the resistance between the sunroof switch low reference terminal of the power sunroof switch harness connector and the sunroof switch low reference terminal of the power sunroof control module harness connector. Is the resistance within the specified value? | 1-3 ohms | Go to Step 14 | Go to Step 13 |
13 | Repair the open sunroof low reference circuit between the power sunroof switch and the power sunroof control module. Did you find and correct the condition? | -- | Go to Step 24 | -- |
14 |
Is the voltage within the specified range? | 10-15 V | Go to Step 16 | Go to Step 15 |
15 | Repair the open circuit in the power sunroof control module RAP relay switch supply voltage circuit. Did you find and correct the condition? | -- | Go to Step 24 | -- |
16 | Measure the voltage between the power sunroof control module 4- way harness connector RAP relay switch supply voltage and ground terminals. Is the voltage within the specified range? | 10-15 V | Go to Step 18 | Go to Step 17 |
17 | Repair an open in the power sunroof control module ground circuit. Did you find and correct the condition? | -- | Go to Step 24 | -- |
18 |
Ignoring polarity, is the voltage within the specified range? | 10-15 V | Go to Step 20 | Go to Step 19 |
19 | Test for an open circuit in the 2-wire power sunroof motor circuit. Did you find and correct the condition? | -- | Go to Step 24 | Go to Step 21 |
20 | Inspect for poor connections/ terminal tension at 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 24 | Go to Step 22 |
21 | Inspect for poor connections/ terminal tension at 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 24 | Go to Step 23 |
22 |
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 24 | -- |
23 | Replace the power sunroof control module. Refer to Power Sunroof Express Module Replacement . Did you complete the replacement? | -- | Go to Step 24 | -- |
24 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
