Test S: The Auxiliary Panel/Floor Control Is Inoperative/Does Not Operate Correctly Using The Front/Rear Auxiliary Climate Cont

PINPOINT TEST S: THE AUXILIARY PANEL/FLOOR CONTROL IS INOPERATIVE/DOES NOT OPERATE CORRECTLY USING THE FRONT/REAR AUXILIARY CLIMATE CONTROLS

Normal Operation
Under normal operation, to rotate the mode door actuator clockwise, the electronic automatic temperature control (EATC) module supplies voltage to the auxiliary panel/floor door actuator through the circuit CH243 (GY/BU), and supplies ground through circuit CH242 (VT/BN). To rotate the auxiliary panel/floor door actuator counterclockwise, the EATC module reverses the voltage and ground circuits.

The auxiliary panel/floor door actuator feedback resistor is supplied a ground from the EATC module through circuit RH111 (GY/BN) and a 5-volt reference voltage on circuit LH111 (BN/WH). The EATC module reads the voltage on the auxiliary panel/floor door actuator feedback circuit VHA18 (YE/GN) to determine the auxiliary panel/floor door actuator position by the position of the actuator feedback resistor wiper arm.

- DTC B2917 Rear Mode Door Circuit Failure - The module senses an open/short in the feedback circuit or no change in actuator feedback voltage when the actuator motor has been energized.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Auxiliary panel/floor door actuator
- EATC module
- Stuck or bound linkage or door

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