Blower Motor Malfunction - Auxiliary

BLOWER MOTOR MALFUNCTION - AUXILIARY

TEST DESCRIPTION

Steps 1-8:

Steps 9-22:

The numbers below refer to the step numbers on the diagnostic table.
1. Make sure to perform the HVAC diagnostic system check. If DTCs B0434, DTC B3764, and the auxiliary blower motor is always ON, then the 5-volt reference circuit of the auxiliary HVAC door actuators is pulled low to ground. The DTC diagnostic must be performed to ensure circuit is tested.
5. This step tests for an internal failure of the rear seat audio (RSA) control module, or the auxiliary HVAC control module.
6. This step tests the 5-volt reference supplied by the auxiliary blower motor control processor.
7. This step tests for an internal failure of the front auxiliary HVAC control assembly.