TX Failure (Stored)

Test 1:

SYMPTOM
TX FAILURE (STORED)

TEST NOTE
This symptom is diagnosed using the test A/C SWITCH FAULT (STORED).

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
- Check for active HVAC DTCS, and cooldown test and door recalibration messages
- Stored code(s) test complete