Diagnostic Aids
Refer to Testing for Electrical Intermittents in Wiring Systems.
Test Description
The steps below refer to the test steps in the diagnostic table.
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 a Slide 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 |
Does the sunroof open. | -- | Go to Step 5 | Go to Step 9 | |
5 | Test for a poor connection/terminal tension at the overhead console 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 23 | Go to Step 6 |
6 | Replace the overhead console switch. Refer to Sunroof Switch Replacement . Did you complete the replacement? | -- | Go to Step 23 | -- |
Is the resistance equal to the specified value? | OL | Go to Symptoms in Retained Accessory Power | Go to Step 8 | |
8 | Repair short to ground in power sunroof control module battery positive circuit. Did you find and correct the condition? | -- | Go to Step 23 | -- |
9 |
Is the resistance within the specified range? | 1-3 ohms | Go to Step 11 | Go to Step 10 |
10 | Repair the open circuit or short to ground between the overhead console switch and the power sunroof control module. Did you find and correct the condition? | -- | Go to Step 23 | -- |
11 | Measure the resistance between the ground terminal of the overhead console switch harness connector and the ground terminal of the Power Sunroof Control Module harness connector. Is the resistance within the specified range? | 1-3 ohms | Go to Step 13 | Go to Step 12 |
12 | Repair the open ground circuit between the overhead console switch and the power sunroof control module. Did you find and correct the condition? | -- | Go to Step 23 | -- |
13 |
Is the voltage within the specified range? | 10-15 V | Go to Step 15 | Go to Step 14 |
14 | Repair the open circuit in the power sunroof control module battery positive circuit. Did you find and correct the condition? | -- | Go to Step 23 | -- |
15 | Measure the voltage between the power sunroof control module 4-way harness connector battery positive voltage and ground terminal. Is the voltage within the specified range? | 10-15 V | Go to Step 17 | Go to Step 16 |
16 | Repair an open in the power sunroof control module ground circuit. Did you find and correct the condition? | -- | Go to Step 23 | -- |
Ignoring polarity, is the voltage within the specified range? | 10-15 V | Go to Step 19 | Go to Step 18 | |
18 | Test for an open in the 2-wire Power Sunroof Motor circuit. Did you find and correct the condition? | -- | Go to Step 23 | Go to Step 20 |
19 | Test for a poor connection/ terminal tension at the power sunroof motor assembly 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 23 | Go to Step 21 |
20 | Test for poor connection/ terminal tension at the power sunroof control module 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 23 | Go to Step 22 |
21 |
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 23 | -- |
22 | Replace the power sunroof control module. Refer to Power Sunroof Express Module Replacement . Did you complete the replacement? | -- | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2 |
