Power Sunroof/Sunshade Malfunction |
Diagnostic Instructions |
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Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
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Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
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Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
Diagnostic Fault Information |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
B+ |
1 |
1 |
- |
- |
Sunroof Switch Close Signal |
B3664 02 |
B3664 05 |
B3664 05 |
- |
Sunroof Switch Open Signal |
B3664 02 |
B3664 05 |
B3664 05 |
- |
Sunshade Switch Close Signal |
B369B 02 |
B369B 05 |
B369B 05 |
- |
Sunshade Switch Open Signal |
B369B 02 |
B369B 05 |
B369B 05 |
- |
Sunroof Vent Switch Open Signal |
B369C 02 |
B369C 05 |
B369C 05 |
- |
Sunroof Vent Switch Close Signal |
B369C 02 |
B369C 05 |
B369C 05 |
- |
Sunroof Switch Ground |
- |
1 |
- |
- |
Sunroof Module Ground |
- |
1 |
- |
- |
Sunshade Switch Ground |
- |
1 |
- |
- |
Sunshade Module Ground |
- |
1 |
- |
- |
1. Power Sunroof/Sunshade Malfunction |
Circuit/System Description |
Reference Information |
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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Circuit/System Verification |
1. |
Press the sunshade switch to the open and close positions. The sunshade should open and close when changing between the commanded states. |
2. |
Press the sunroof switch to the open and close positions. The sunroof should open and close when changing between the commanded states. |
Circuit/System Testing |
Note | ||
Because of the accessibility of the switches, perform the switch component testing before beginning the circuit/system testing. |
1. |
Ignition OFF, disconnect the harness connector at the appropriate module. |
2. |
Test for less than 5 Ω between the ground circuit terminals listed below and ground: |
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K61 Sunroof Control Module terminal 2 and terminal 8 |
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K62 Sunroof Sunshade Motor Module terminal 2 and terminal 9 |
3. |
If greater than the specified range, test the ground circuit for an open/high resistance. |
4. |
Verify that a test lamp illuminates between the B+ circuit terminal 1 and ground. |
5. |
If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, determine if the appropriate module is causing the fuse to open. Replace the appropriate module. |
6. |
Ignition ON, verify that a test lamp does not illuminate between the circuit terminals listed below and ground: |
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Terminal 3 |
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Terminal 5 |
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Terminal 6 |
7. |
If the test lamp does illuminate, test the appropriate circuit for a short to voltage. |
8. |
Ignition OFF, verify that a test lamp does not illuminate between the circuit terminals listed below and B+: |
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Terminal 3 |
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Terminal 5 |
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Terminal 6 |
9. |
If the test lamp does illuminate, test the appropriate circuit for a short to ground. |
10. |
Disconnect the harness connector at the S72 Sunroof Switch, the S88 Sunroof Tilt Switch or the S90 Sunroof Sunshade Switch. |
11. |
Test for less than 5 Ω between the circuit terminals listed below: |
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S72 Sunroof Switch terminal 1 and K61 Sunroof Control Module terminal 3 |
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S72 Sunroof Switch terminal 4 and K61 Sunroof Control Module terminal 5 |
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S88 Sunroof Tilt Switch terminal 1 and K61 Sunroof Control Module terminal 3 |
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S88 Sunroof Tilt Switch terminal 4 and K61 Sunroof Control Module terminal 6 |
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S90 Sunroof Sunshade Switch terminal 1 and K62 Sunroof Sunshade Motor Module terminal 3 |
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S90 Sunroof Sunshade Switch 4 and K62 Sunroof Sunshade Motor Module terminal 5 |
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If the value is greater than the specified value, test the appropriate circuit for an open circuit/high resistance. |
12. |
If all circuits test normal, test or replace the appropriate module. |
Component Testing |
1. |
Ignition OFF, disconnect the harness connector at the appropriate sunroof/sunshade switch. |
2. |
Test for 3.6-3.7 kΩ between the switch terminals 1 and the low reference circuit terminal 4. |
3. |
If not within the specified range, replace the appropriate switch. |
4. |
Test for 430-440 Ω between the signal terminal 1 and the low reference circuit terminal 4 while pressing the open switch. |
5. |
If not within the specified range, replace the appropriate switch. |
6. |
Test for 96-100 Ω between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express open switch. |
7. |
If not within the specified range, replace the appropriate switch. |
8. |
Test for 1.7-1.8 kΩ between the signal terminal 1 and the low reference circuit terminal 4 while pressing the close switch. |
9. |
If not within the specified range, replace the appropriate switch. |
10. |
Test for 930-940 Ω between the signal terminal 1 and the low reference circuit terminal 4 while pressing the express close switch. |
11. |
If not within the specified range, replace the appropriate switch. |
1. |
Ignition OFF, disconnect the harness connector at the S88 Sunroof Tilt Switch. |
2. |
Test for 930-940 Ω between the switch terminals 1 and the low reference circuit terminal 4. |
3. |
If not within the specified range, replace the S88 Sunroof Tilt Switch. |
4. |
Test for 96-100 Ω between the signal terminal 1 and the low reference circuit terminal 4 while pressing the open switch. |
5. |
If not within the specified range, replace the S88 Sunroof Tilt Switch. |
6. |
Test for 430-440 Ω between the signal terminal 1 and the low reference circuit terminal 4 while pressing the close switch. |
7. |
If not within the specified range, replace the S88 Sunroof Tilt Switch. |
Repair Instructions |
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Sunroof Switch Replacement
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Sunroof Module Assembly Replacement
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Sunroof Sunshade Motor Replacement
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Control Module References for sunroof/sunshade motor/actuator replacement, setup, and programming |