PCM Communication Failure (Active)

Test 1:

Test 2 - 3:

SYMPTOM
PCM COMMUNICATION FAILURE (ACTIVE) - MTC

TEST NOTE
This symptom is diagnosed using the test NO FUEL LEVEL MESSAGE RECEIVED (ACTIVE) - MTC.

WHEN MONITORED
With the ignition on.

SET CONDITION
This DTC will set if the A/C - Heater Control Module does not receive the Fuel message from the PCM for more than 5 seconds.

POSSIBLE CAUSES
- Message not received
- Attempt to communicate with the PCM/ECM
- PCI bus circuit open
- Powertrain/engine control module