Test S: The Auxiliary Panel/Floor Control Only Is Inoperative/Does Not Operate Correctly

PINPOINT TEST S: THE AUXILIARY PANEL/FLOOR CONTROL ONLY IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

S1:

S2-S4:

S5-S7:

S7-S9:

S9-S11:

S11-S12:

S12-S13:

S14-S15:

S15-S17:

S17 Continued:

Normal Operation
Under normal operation, to rotate the mode door actuator clockwise, the EATC module supplies voltage to the auxiliary panel/floor door actuator through the circuit 1380 (TN/YE), and supplies ground through circuit 1379 (PK/LB). 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 1377 (TN/LG) and a 5-volt reference voltage on circuit 1381 (WH/LB). The EATC module reads the voltage on the auxiliary panel/floor door actuator feedback circuit 1382 (BK/OG) to determine the auxiliary panel/floor door actuator position by the position of the actuator feedback resistor wiper arm.

Possible Causes
- An open, short to voltage, ground or together in circuits 1380 (TN/YE), 1379 (PK/LB), 1377 (TN/LG), 1381 (WH/LB) and 1382 (BK/OG)
- Auxiliary panel/floor door actuator
- EATC module
- Stuck or bound linkage or door