MTC Air Conditioner - Page 86

MTC-86
TROUBLE DIAGNOSIS
Revision: January 2005 2004 Quest
10. CHECK REAR BLOWER MOTOR RELAY (SWITCH SIDE) POWER SUPPLY CIRCUIT
1. Disconnect fuse block (J/B) and rear blower motor harness con-
nectors.
2. Check continuity between fuse block (J/B) harness connector
M3 terminal 3N (L/R) and 8N (L/R) and rear blower motor har-
ness connector B134 terminal + (L/R).
OK or NG
OK >> GO TO 20.
NG >> Repair harness or connector.
11. CHECK REAR BLOWER MOTOR
Refer to MTC-90, "
Rear Blower Motor" .
OK or NG
OK >> GO TO 12.
NG >> Replace rear blower motor. Refer to MTC-120, "
REAR BLOWER MOTOR" .
12. CHECK REAR BLOWER SWITCH (FRONT)
Refer to MTC-89, "
Rear Blower Switch (Front)" .
OK or NG
OK >> GO TO 15.
NG >> Replace front air control. Refer to MTC-116, "
FRONT AIR CONTROL" .
13. CHECK REAR BLOWER MOTOR RESISTOR
Refer to MTC-90, "
Rear Blower Motor Resistor" .
OK or NG
OK >> GO TO 14.
NG >> Replace rear blower motor resistor. Refer to MTC-138, "
Removal and Installation" .
14. CHECK REAR BLOWER SWITCH (FRONT) CIRCUIT
1. Disconnect rear blower switch (front).
2. Reconnect rear blower motor resistor harness connector.
3. Check voltage between each rear blower switch (front) connec-
tor M52 terminals 3 (LG), 7 (LG/B), and 8 (G), and ground.
OK or NG
OK >> GO TO 17.
NG >> GO TO 16.
Continuity should exist.
LJIA0107E
Terminal No.
Voltage
(Approx.)
+-
3
Ground 12V7
8
LJIA0108E