Sunroof Module (SUNR)

U0010-CAN INTERIOR BUS





For a complete wiring diagram, refer to the Wiring Information. Electrical Diagrams

- When Monitored:
Continuously

- Set Condition:
Whenever the CAN Interior Bus (125K) (+) or CAN Interior Bus (125K) (-) circuit is open, shorted to voltage or shorted to ground.





1. CHECK FOR ACTIVE DTCS
1. Turn the ignition on.
2. With the scan tool, record and erase the DTCs.
3. Cycle the ignition off and on three times.
4. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK TIPM DTCS
1. With the scan tool, read the TIPM active DTCs.

Does the scan tool display any active CAN INTERIOR BUS DTCS?

Yes

- Testing and Inspection Perform the appropriate diagnostic test procedure.

No

- Go To 3

3. CHECK THE (D265) CAN INTERIOR BUS (125K) (+) CIRCUIT FOR A SHORT TO VOLTAGE





NOTE: To further diagnose the sunroof, it is necessary to lower or remove the headliner.

1. Turn the ignition off.
2. Lower the headliner to gain access to the Sunroof Motor/Module harness connector.
3. Disconnect the Sunroof Motor/Module harness connector.
4. Disconnect the TIPM C7 harness connector.

NOTE: Make sure the A-Pillar and all Sunroof inline connectors are connected before proceeding.

5. Turn the ignition on.
6. Measure the voltage between ground and the (D265) CAN Interior Bus (125K) (+) circuit in the the TIPM C7 harness connector.

Is the voltage above 10.0 volts?

No

- Go To 4

Yes

- Repair the (D265) CAN Interior Bus (125K) (+) circuit for a short to battery.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

4. CHECK THE (D264) CAN INTERIOR BUS (125K) (-) CIRCUIT FOR A SHORT TO VOLTAGE




1. Measure the voltage between ground and the (D264) CAN Interior Bus (125K) (-) circuit in the TIPM C7 harness connector.

Is the voltage above 10.0 volts?

No

- Go To 5

Yes

- Repair the (D264) CAN Interior Bus (125K) (-) circuit for a short to battery.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

5. CHECK THE (D265) CAN INTERIOR BUS (125K) (+) CIRCUIT FOR A SHORT TO GROUND




1. Turn the ignition off.
2. Measure the resistance between ground and the (D265) CAN Interior Bus (125K) (+) circuit in the the TIPM C7 harness connector.

Is the resistance above 10k ohms?

Yes

- Go To 6

No

- Repair the (D265) CAN Interior Bus (125K) (+) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

6. CHECK THE (D264) CAN INTERIOR BUS (125K) (-) CIRCUIT FOR A SHORT TO GROUND




1. Measure the resistance between ground and the (D264) CAN Interior Bus (125K) (-) circuit in the TIPM C7 harness connector.

Is the resistance above 10k ohms?

Yes

- Go To 7

No

- Repair the (D264) CAN Interior Bus (125K) (-) circuit for a short to ground.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

7. CHECK THE (D265) CAN INTERIOR BUS (125K) (+) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (D265) CAN Interior Bus (125K) (+) circuit between the TIPM C7 harness connector and the Sunroof Motor/Module harness connector.

Is the resistance below 2.0 ohms?

Yes

- Go To 8

No

- Repair the (D265) CAN Interior Bus (125K) (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

8. CHECK THE (D264) CAN INTERIOR BUS (125K) (-) CIRCUIT FOR AN OPEN




1. Measure the resistance of the (D264) CAN Interior Bus (125K) (-) circuit between the TIPM C7 harness connector and the Sunroof Motor/Module harness connector.

Is the resistance below 2.0 ohms?

Yes

- Replace the Sunroof Motor/Module.
- Perform the Drive Motor Teach procedure. Programming and Relearning
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (D264) CAN C Interior Bus (125K) (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.