Diagnostic CAN C (+) and/or Diagnostic CAN C (-) Circuits High

CAN C DIAGNOSTIC (+) AND/OR CAN C DIAGNOSTIC (-) CIRCUITS HIGH

Can C Diagnostic (+) And/or Can C Diagnostic (-) Circuits High:

WHEN MONITORED
When the scan tool queries the TIPM.

SET CONDITION
The scan tool has detected a shorted high condition on either or both CAN C Diagnostic circuits.

POSSIBLE CAUSES
- (D72) CAN C diagnostic (+) circuit shorted to voltage
- (D71) CAN C diagnostic (-) circuit shorted to voltage
- Totally integrated power module

Diagnostic Test

1. CHECK THE STATUS OF THE ERROR MESSAGE

NOTE:
- Ensure the vehicle being tested is a CAN BUS VEHICLE. If not, false error messages may be displayed.
- Ensure the scan tool is updated to the latest software.

With the scan tool, record the error message.
Disconnect the scan tool from the DLC.
Cycle the ignition from on to off 3 times.
Turn the ignition on.

Q: Does the scan tool display this same error message?

YES: Go To 2
NO: The conditions that caused this error message to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.




2. CAN C DIAGNOSTIC CIRCUITS SHORTED TO VOLTAGE

Turn the ignition off.
Disconnect the Totally Integrated Power Module harness connector.
Disconnect the scan tool from the DLC.
Turn the ignition on.
Measure the voltage of the CAN C Diagnostic circuits.

Q: Is the voltage above 6.0 volts for either circuit?

YES: Repair the CAN C Diagnostic circuits for a short to voltage. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Inspect the wiring and connectors for damage or shorted circuits. If ok, replace the Totally Integrated Power Module. Perform the BODY VERIFICATION TEST - VER 1. Body Verification Test