Blower Motor Malfunction - Auxiliary

TEST DESCRIPTION

Steps 1-7:

Steps 8-18:

Steps 19-33:

The number(s) below refer to the step number(s) on the diagnostic table.
7. Test the circuit that did not illuminate the test lamp in Step 6.
10. The control circuit of the auxiliary blower motor relay is the circuit which provides the ground path for the relay coil through the auxiliary blower motor switch(es).
14. Test the blower motor control circuit that corresponds with the inoperative blower motor speed.
15. The auxiliary blower motor switch control circuit is the circuit that enables the rear auxiliary HVAC control assembly when the front auxiliary blower motor switch is placed in the rear control position.
16. The auxiliary blower motor switch control circuit is the circuit that enables the rear auxiliary HVAC control assembly when the front auxiliary blower motor switch is placed in the rear control position.

For a description of the RPO Code(s) shown in this article/images refer to the RPO Code List found at Vehicle/Application ID RPO Codes