MTC Air Conditioner - Page 66

MTC-66
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 (rear) harness con-
nector B146 terminal 2 (Y) and front air control harness connec-
tor 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 mode door motor connector.
2. Check voltage between front air control harness connector M50
terminal 42 (G/B) and ground.
3. Rotate rear 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 (rear) harness connector and front air control harness connector.
2. Check continuity between air mix door motor (rear) harness con-
nector B146 terminal 4 (G/B) and front air control harness con-
nector M50 terminal 42 (G/B).
OK or NG
OK >> Replace air mix door motor (rear). Refer to MTC-136,
"AIR MIX DOOR MOTOR (REAR)" .
NG >> Repair or replace harness as necessary.
Continuity should exist.
LJIA0052E
0V - 5V (Approx.) should exist.
LJIA0053E
Continuity should exist.
LJIA0054E