Cabin Heater Control Circuit Shorted to Battery (Stored)

Test 1 - 3:

Test 4:

Test 5:

SYMPTOM
CABIN HEATER CONTROL CIRCUIT SHORT TO BATTERY (STORED)

TEST NOTE
This symptom is diagnosed using the test A. CABIN HEATER PRE-TEST.

WHEN MONITORED
During DCHA activation and operation.

SET CONDITION
This DTC will set if the FCM sees between 5.0 and 15.0 volts on the Cabin Heater Assist Control circuit.

POSSIBLE CAUSES
- No response from cabin heater module
- DTC(s) present
- Cabin heater inoperable from A/C - heater module (MTC)
- Cabin heater inoperable from auto temp control (ATC)
- Stored DCHA DTC(s) test complete