No Can Communications With PCM

WHEN MONITORED
With the ignition on.

SET CONDITION
CAN Bus communication failure between the Sentry Key Remote Entry Module (SKREEM) and the Powertrain Control Module (PCM).

POSSIBLE CAUSES
- CAN bus circuit(s) open
- Sentry key remote entry module

Diagnostic Test




1. MEASURE THE RESISTANCE OF THE CAN C BUS (+) CIRCUIT

Turn the ignition off.
Disconnect the SKREEM harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the CAN C Bus (+) circuit from the SKREEM harness connector to the PCM harness connector.

Q: Is the resistance below 1.0 ohm?

YES: Go to 2
NO: Repair the CAN C Bus (+) circuit for an open. Perform VTSS VERIFICATION TEST. VTSS Verification Test




2. MEASURE THE RESISTANCE OF THE CAN C BUS (-) CIRCUIT

Measure the resistance of the CAN C Bus (-) circuit from the SKREEM harness connector and the PCM harness connector.

Q: Is the resistance below 1.0 ohm?

YES: Replace the Sentry Key Remote Entry Module. Perform VTSS VERIFICATION TEST. VTSS Verification Test
NO: Repair the CAN C Bus (-) circuit for an open. Perform VTSS VERIFICATION TEST. VTSS Verification Test