MTC Air Conditioner - Diagnostic Procedure for Air MIX Door Motor (Rear)

MTC-64
TROUBLE DIAGNOSIS
Revision: January 2005 2004 Quest
5. CHECK PBR GROUND REFERENCE CIRCUIT
1. Disconnect the front air control harness connector.
2. Check continuity between air mix door motor (front) harness
connector M39 terminal 1 (Y) and front air control harness con-
nector M49 terminal 15 (Y).
OK or NG
OK >> GO TO 6.
NG >> Repair or replace harness as necessary.
6. CHECK PBR FEEDBACK SIGNAL
1. Reconnect the front air control harness connector and air mix door motor (front) harness connector.
2. Check voltage between front air control harness connector M49
terminal 18 (Y/B) and ground.
3. Rotate front temperature dial through complete range.
OK or NG
OK >> Replace front air control. Refer to MTC-116, "FRONT
AIR CONTROL" .
NG >> GO TO 7.
7. CHECK PBR FEEDBACK CIRCUIT
1. Disconnect the air mix door motor (front) harness connector and front air control harness connector.
2. Check continuity between air mix door motor (front) harness
connector M39 terminal 2 (Y/B) and front air control harness
connector M49 terminal 18 (Y/B).
OK or NG
OK >> Replace air mix door motor (front). Refer to MTC-135,
"AIR MIX DOOR MOTOR (FRONT)" .
NG >> Repair or replace harness as necessary.
DIAGNOSTIC PROCEDURE FOR AIR MIX DOOR MOTOR (REAR)
1. CHECK RESULT FROM FRONT AIR CONTROL SELF-DIAGNOSIS
Self-diagnosis code 38 is present.
Yes or No
Yes >> GO TO 2.
No >> GO TO 3.
Continuity should exist.
WJIA0538E
0V - 5V (Approx.) should exist.
LJIA0041E
Continuity should exist.
WJIA0539E