MTC Air Conditioner - Page 85

TROUBLE DIAGNOSIS
MTC-85
C
D
E
F
G
H
I
K
L
M
A
B
MTC
Revision: January 2005 2004 Quest
6. CHECK REAR BLOWER MOTOR RELAY (COIL SIDE) POWER SUPPLY CIRCUIT
1. Disconnect fuse block (J/B) harness connector.
2. Turn ignition switch ON.
3. Set rear blower switch (front) to any position except OFF, REAR,
or 4 - speed.
4. Check voltage between fuse block (J/B) harness connector E30
terminal 3Q (W/G) and ground.
OK or NG
OK >> GO TO 7.
NG >> GO TO 20.
7. CHECK REAR BLOWER MOTOR RELAY (COIL SIDE) GROUND CIRCUIT
Check continuity between fuse block (J/B) harness connector M3 terminal 7N (B) and ground.
OK or NG
OK >> Replace fuse block (J/B).
NG >> Repair harness or connector.
8. REPLACE FUSE
Refer to PG-71, "
FUSE BLOCK-JUNCTION BOX(J/B)"
Fuse should not open when rear blower motor is activated.
OK or NG
OK >> Inspection End.
NG >> GO TO 9.
9. CHECK REAR BLOWER MOTOR POWER SUPPLY CIRCUIT FOR SHORT
1. Disconnect battery cables and rear blower motor harness con-
nector.
2. Check continuity between rear blower motor harness connector
B134 terminal + (L/R) and ground.
OK or NG
OK >> Check rear blower motor. Refer to MTC-90, "Rear
Blower Motor" .
NG >> Repair harness or connector.
Battery voltage should exist.
LJIA0101E
Continuity should exist.
LJIA0102E
Continuity should not exist.
LJIA0104E