Test U

PINPOINT TEST U: THE PANEL/FLOOR CONTROL IS INOPERATIVE USING THE FRONT AUXILIARY CLIMATE CONTROLS

Test U1:

Test U1-U3:

Test U3-U5:

Test U5-U6:

Normal Operation
Under normal operation, the auxiliary mode door actuator motor is driven to the floor position by supplying voltage to the motor on circuit 1128 (GY/LB) and ground to circuit 1129 (BN/WH).

The auxiliary mode door actuator motor is driven to the panel position by supplying voltage to the motor on circuit 1129 (BN/WH) and ground to circuit 1128 (GY/LB).

Possible Causes
- An open, short to voltage, ground or together in circuits 1128 (GY/LB) or 1129 (BN/WH).
- Front auxiliary climate control assembly.
- Auxiliary mode door actuator motor.
- Broken/binding auxiliary mode door.