MTC Air Conditioner - Diagnostic Procedure for Blower Motor

MTC-74
TROUBLE DIAGNOSIS
Revision: January 2005 2004 Quest
DIAGNOSTIC PROCEDURE FOR BLOWER MOTOR
SYMPTOM: Blower motor operation is malfunctioning.
1. DIAGNOSTIC PROCEDURE
Turn the front blower switch to each of its four speeds.
Does blower motor rotate normally at each speed?
OK or NG
OK >> INSPECTION END.
NG >> 1. Does not rotate at any speed, GO TO 2.
2. Does not rotate at 1 - 3 speed, GO TO 13.
3. Does not rotate at 4 speed, GO TO 16.
2. CHECK FUSES
Check 20A fuses [Nos. 28 and 30, located in the fuse and fusible link box]. Refer to PG-72, "
FUSE AND FUS-
IBLE LINK BOX" .
OK or NG
OK >> GO TO 3.
NG >> GO TO 8.
3. CHECK FRONT BLOWER MOTOR POWER SUPPLY
1. Disconnect front blower motor harness connector.
2. Select any front blower motor speed except OFF.
3. Check voltage between front blower motor harness connector
M62 terminal + (W/L) and ground.
OK or NG
OK >> GO TO 11.
NG >> GO TO 4.
WJIA0502E
Battery voltage should exist.
WJIA0326E