Driver Door Module (DDM)

U1000-CAN B BUS (+) CIRCUIT







- When Monitored:
Continuously

- Set Condition:
Whenever the CAN B Bus (+) or CAN B Bus (-) circuit is open.





1. CHECK FOR ACTIVE DTCS
1. With the scan tool, read the active DTCs.
2. Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
3. With the scan tool, read the active DTCs.

Does the scan tool display this DTC as active?

Yes

- Go To 2

No

- If the DTC is stored, check for an intermittent condition. Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

2. CHECK TIPM DTCs
1. With the scan tool, read Totally Integrated Power Module (TIPM) active DTCs

Does the scan tool display any CAN B BUS DTC's - ACTIVE?

Yes

- Perform the appropriate diagnostic procedure. Testing and Inspection

No

- Go To 3

3. (D55) CAN B BUS (+) CIRCUIT OPEN




1. Turn the ignition off.
2. Disconnect the negative battery cable.
3. Disconnect the appropriate Door Module C2 connector.
4. Disconnect the Totally Integrated Power Module C3 connector.
5. Measure the resistance of the (D55) CAN B Bus (+) circuit between the TIPM C3 connector and the Door Module C2 connector.

Is the resistance below 2.0 ohms?

Yes

- Replace the Driver Door Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the (D55) CAN B Bus (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. Body Verification Test.