Diagnostic Test
- CHECK FOR ACTIVE DIAGNOSTIC TROUBLE CODE (DTC)S
- Using the scan tool, read the active DTCs.
- Cycle the ignition switch from off to on at least 5 times, leaving the ignition on for a minimum of 90 seconds per cycle.
- Using the scan tool, read the active DTCs.
Does the scan tool display this DTC as active?
Yes
- Go to Step 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.
- CHECK TOTALLY INTEGRATED POWER MODULE FOR U0019 DTC
- Using the scan tool, read Totally Integrated Power Module active DTCs.
Does the scan tool display U0019-CAN B BUS as active?
Yes
- Perform the U0019-CAN B BUS diagnostic procedure. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing .
No
- Go to Step 3.
- Using the scan tool, read Totally Integrated Power Module active DTCs.
- (D55) CAN B BUS (+) CIRCUIT OPEN
- Turn the ignition off.
- Disconnect the Totally Integrated Power Module C5 connector.
- Turn the ignition on.
- Measure the voltage of the (D55) CAN B Bus (+) circuit.
Is any voltage present on this circuit?
Yes
- Go to Step 4.
No
- Repair the (D55) CAN B Bus (+) circuit for an open.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
- (D54) CAN B BUS (-) CIRCUIT OPEN
- Measure the voltage of the (D54) CAN B Bus (-) circuit.
Is any voltage present on this circuit?
Yes
- Replace the Totally Integrated Power Module in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
No
- Repair the (D54) CAN B Bus (-) circuit for an open.
- Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
- Measure the voltage of the (D54) CAN B Bus (-) circuit.