Test A: The Air Inlet Door Is Inoperative

PINPOINT TEST A: THE AIR INLET DOOR IS INOPERATIVE

A1:

A2-A3:

A4-A7:

A7-A9:

Normal Operation
Under normal operation, the air inlet door actuator motors are supplied voltage or ground on circuit 1116 (DG), depending on desired actuator rotation, by the electronic manual temperature control (EMTC) module. The EMTC module then supplies the appropriate voltage or ground to the other side of the actuator motor on circuit 1117 (LG).

Possible Causes
- An open, short to voltage, ground or together in circuits 1116 (DG) or 1117 (LG)
- Air inlet door actuator
- EMTC module
- Stuck or bound linkage or door