Test N: The Temperature Control Is Inoperative/Does Not Operate Correctly - Manual Climate Control

PINPOINT TEST N: THE TEMPERATURE CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY - MANUAL CLIMATE CONTROL

N1:

N1-N3:

N3-N5:

N5-N7:

N7-N8:

Normal Operation
Under normal operation, the temperature blend door actuator is supplied voltage on circuit 295 (LB/PK) and ground on circuit 57 (BK). As the temperature selection changes it varies the voltage on circuit 437 (YE/LG) to the temperature blend door actuator. The temperature control potentiometer receives voltage through circuit 296 (WH/VT).

Possible Causes
- Fuse
- An open, short to voltage, ground or together in circuits 57 (BK), 295 (LB/PK), 296 (WH/VT) or 437 (YE/LG)
- Temperature blend door actuator
- Climate control switch
- Stuck or bound linkage or door