TX Failure (Active)

Tests 1 - 3:

Test 4:

SYMPTOM
TX FAILURE (ACTIVE) - MTC

WHEN MONITORED
When the ignition is ON.

SET CONDITION
This DTC Will set if the A/C-Heater Control Module is unable to send a message.

POSSIBLE CAUSES
- Attempt to communicate with the HVAC module
- Additional code(s) present
- Attempt to communicate with the PCM/ECM, BCM, and FCM
- A/C - heater control module