Page 2649 of 3066
TROUBLE DIAGNOSIS
MTC-13
C
D
E
F
G
H
I
K
L
MA
B
MTC
4.CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Reconnect heater control panel connector.
OK or NG
OK >> Replace intake door motor.
NG >> GO TO 5.
5.CHECK CIRCUIT CONTINUITY BETWEEN HEATER CONTROL PANEL AND INTAKE DOOR MOTOR
Disconnect the heater control panel connector and intake door motor
connector.
OK or NG
OK >> Replace heater control panel.
NG >> Repair harness or connector.
Blower Motor CircuitEJS001FI
SYMPTOM: Blower motor operation is malfunctioning.
Te r m i n a l s
Condition Voltage (+) (-)
ConnectorTerminal (Wire
colorConnectorTerminal (Wire
color)
M48 2 (R/W) M48 1(Y/R) REC SW: ON
Approx. 12V
M48 1 (Y/R) M48 2(R/W) REC SW: OFF
RJIA0599E
Te r m i n a l s
Continuity Heater control panel connector Intake door motor connector
ConnectorTe r m i n a l
(Wire color)ConnectorTe r m i n a l
(Wirecolor)
M53 10 (R/W) M48 2 (R/W)
Ye s
M53 11 (Y/R) M48 1 (Y/R)
RJIA0600E
Page 2650 of 3066
MTC-14
TROUBLE DIAGNOSIS
INSPECTION FLOW
DIAGNOSTIC PROCEDURE
SYMPTOM: Blower motor operation is malfunctioning.
*1 Blower motor circuitMTC-13*2 Operational checkMTC-7*3 Symptom tableMTC-3
*4 Operational checkMTC-7
RJIA0601E
RJIA0602E
Page 2651 of 3066

TROUBLE DIAGNOSIS
MTC-15
C
D
E
F
G
H
I
K
L
MA
B
MTC
1.CHECK POWER SUPPLY FOR BLOWER MOTOR
Disconnect blower motor harness connector.
OK or NG
OK >> GO TO 2.
NG >> Check power supply circuit and 15A fuses (Nos. 19 and
24, located in the fuse block). Refer toPG-3, "
BATTERY
POWER SUPPLY—IGNITION SW. IN ANY POSITION".
lIf OK, check for open circuit in wiring harness. Repair or replace as necessary.
lIf NG, replace fuse and check wiring harness for short circuit. Repair or replace as necessary.
2.CHECKBODYGROUNDCIRCUITFORBLOWERMOTOR
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3.CHECKBLOWERMOTOR
Refer toMTC-17
.
OK or NG
OK >> INSPECTION END
NG >> Replace blower motor.
4.CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND FAN RESISTOR
Disconnect fan resistor connector.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
Terminals
Vo ltag e (+) (-)
ConnectorTe r m i n a l
(Wire coor)-
M65 (L/W) Ground Approx. 12V
RJIA0603E
Terminals Condition
Continuity
ConnectorTe r m i n a l
(Wire color)--
M65 2 (B) Ground FAN SW: ON Yes
RJIA0604E
Te r m i n a l s
Continuity Fan resistor connector Blower motor connector
ConnectorTe r m i n a l
(Wire color)ConnectorTe r m i n a l
(Wire color)
M66 1 (L/B) M65 2 (L/B) Yes
RJIA0605E
Page 2652 of 3066

MTC-16
TROUBLE DIAGNOSIS
5.CHECK FAN RESISTOR
Refer toMTC-17, "
Blower Fan Resistor".
OK or NG
OK >> GO TO 6.
NG >> Replace fan resistor.
6.CHECK CIRCUIT CONTINUITY BETWEEN FAN RESISTOR AND HEATER CONTROL PANEL
Disconnect heater control panel connector.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7.CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND HEATER CONTROL PANEL
OK or NG
OK >> GO TO 8.
NG >> Repair harness or connector.
8.CHECK FAN SWITCH
Refer toMTC-17, "
Fan Switch".
OK or NG
OK >> GO TO 9.
NG >> Replace fan switch.
9.CHECK GROUND CIRCUIT
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
Te r m i n a l s
Continuity Fan resistor connector Heater control panel connector
ConnectorTerminal
(Wire color)ConnectorTerminal
(Wire color)
M66 2 (L/R) M54 16 (L/R)
Ye s M66 3 (L/Y) M54 15 (L/Y)
M66 4 (L/W) M54 14 (L/W)
RJIA0606E
Te r m i n a l s
Continuity Blower motor connector Heater control panel connector
ConnectorTe r m i n a l
(Wire color)ConnectorTerminal (Wire
color)
M65 2 (L/B) M54 17 (L/B) Yes
RJIA0607E
Te r m i n a l s
Continuity
ConnectorTe r m i n a l
(Wire color)-
M54 13 (B) Ground Yes
RJIA0608E
Page 2653 of 3066
TROUBLE DIAGNOSIS
MTC-17
C
D
E
F
G
H
I
K
L
MA
B
MTC
COMPONENT INSPECTION
Blower Motor
Confirm smooth rotation of the blower motor.
lEnsure that there are no foreign particles inside the intake unit.
Fan Switch
Check continuity between terminals at each switch position.
Blower Fan Resistor
Check continuity between terminals.
Insufficient HeatingEJ S00 1F J
SYMPTOM: Insufficient heating
RJIA0609E
Switch position Connector Terminals Continuity
OFF
M5413 - 14, 15, 16, 17 No
113-14
Ye s 213-15
313-16
413-17
RJIA0610E
Terminals Continuity
M66 - 1M66 - 2
Ye s M66 - 3
M66 - 4
RJIA0611E
Page 2654 of 3066
MTC-18
TROUBLE DIAGNOSIS
INSPECTION FLOW
*1 QR20DE:CO-9, "Changing Engine
Coolant",YD22DDTi:
CO-30, "
Changing Engine Coolant"
*2 QR20DE:CO-13, "CHECKING RADI-
AT O R C A P", YD22DTi:CO-34,
"Checking Radiator Cap"
*3 :QR20DE:
(Water temperature sensor),
YD22DTi:CO-42, "
Removal and
Installation"
(Thermostat)
*4 QR20DE:CO-9, "
Changing Engine
Coolant",YD22DTi:CO-30, "Chang-
ing Engine Coolant"
*5MTC-7, "Operational Check"*6MTC-3, "SYMPTOM TABLE"
RJIA0612E
Page 2655 of 3066
CONTROLLER
MTC-19
C
D
E
F
G
H
I
K
L
MA
B
MTC
CONTROLLERPFP:27500
Removal and InstallationEJS001F7
1. Remove the mode control cable and air mix control cable from
heater unit.
2. Remove the cluster lid finisher.
3. Remove the fixing screw from heater control panel.
4. Remove the heater control panel, then remove the heater con-
trol panel connector.
Disassembly and AssemblyEJS001F8
RJIA0089E
RJIA0090E
Page 2656 of 3066
MTC-20
BLOWER MOTOR
BLOWER MOTOR
PFP:27226
Removal and InstallationEJS000XK
1. Remove the blower unit.
2. Separate the blower unit.
3. Remove the cooling hose, blower fan resistor and blower fan.
RJIA0054E
RJIA0092E