Page 2977 of 3189
Mode Door
TROUBLE DIAGNOSIS PROCEDURE FOR MODE DOOR=NJHA0137SYMPTOM:
Air outlet does not change.
INSPECTION FLOW
RHA255I
*1: HA-19
*2: HA-35*3: HA-42 *4: HA-34
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Mode Door
HA-41
Page 2978 of 3189
RHA695H
RHA745H
CONTROL LINKAGE ADJUSTMENTNJHA0139Mode DoorNJHA0139S011. Turn the mode control knob to VENT position.
2. Move side link by hand and hold mode door in VENT position.
3. Pull on the cable cover in the direction of the arrow, then clamp
it.
After positioning control cable, check that it operates
properly.
TROUBLE DIAGNOSESMANUAL
Mode Door (Cont’d)
HA-42
Page 2979 of 3189
Air Mix Door
TROUBLE DIAGNOSIS PROCEDURE FOR AIR MIX DOOR=NJHA0140SYMPTOM:
Air mix door does not change.
INSPECTION FLOW
RHA284I
*1: HA-44
*2: HA-35*3: HA-35 *4: HA-34
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Air Mix Door
HA-43
Page 2980 of 3189
RHA697H
RHA746H
CONTROL LINKAGE ADJUSTMENTNJHA0143Air Mix DoorNJHA0143S011. Turn the temperature control knob to full hot position.
2. Move air mix door lever by hand and hold it at the full hot
position.
3. Pull on the cable cover in the direction of the arrow, then clamp
it.
After positioning control cable, check that it operates
properly.
TROUBLE DIAGNOSESMANUAL
Air Mix Door (Cont’d)
HA-44
Page 2981 of 3189
Blower Motor
TROUBLE DIAGNOSIS PROCEDURE FOR BLOWER MOTOR=NJHA0145SYMPTOM:
Blower motor does not rotate at all.
INSPECTION FLOW
NHA385
*1: HA-46
*2: HA-35*3: HA-34 *4: HA-35
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Blower Motor
HA-45
Page 2982 of 3189
BLOWER MOTOR CIRCUIT=NJHA0147SYMPTOM:
Blower motor does not rotate.
Symptom
table No.INCIDENT
1 Fan fails to rotate.
2 Fan does not rotate at 1-speed.
3 Fan does not rotate at 2-speed.
4 Fan does not rotate at 3-speed.
5 Fan does not rotate at 4-speed.
1 DIAGNOSTIC PROCEDURE
Check if blower motor rotates properly at each fan speed.
Conduct checks as per symptom table at above.
1GO TO 2.
2, 3, 4GO TO 8.
5GO TO 10.
2 CHECK POWER SUPPLY FOR BLOWER MOTOR
1. Disconnect blower motor harness connector.
2. Do approx. 12 volts exist between blower motor harness terminal No. 1 andbody ground?
RHA343FD
YesorNo
Ye s G O T O 3 .
No Check 15A (Nos. 14 and 16) fuses at fuse block. Refer to EL-14, “Wiring Diagram —
POWER —”.
TROUBLE DIAGNOSESMANUAL
Blower Motor (Cont’d)
HA-46
Page 2983 of 3189
3 CHECK CIRCUIT CONTINUITY FOR BLOWER MOTOR
1. Turn fan control knob to any position except OFF.
2. Check circuit continuity between blower motor harness terminal No. 2 and body ground.
RHA344FD
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 4.
NG Reconnect blower motor harness connector. GO TO 5.
4 CHECK BLOWER MOTOR
(Refer to Electrical Components Inspection.)
(HA-51)
OK or NG
OK INSPECTION END
NG Replace blower motor.
5 CHECK BLOWER MOTOR CIRCUIT BETWEEN BLOWER MOTOR AND RESISTOR
Do approx. 12 volts exist between fan resistor harness terminal No. 1 and body ground?
RHA699HA
YesorNo
Yes Disconnect fan switch harness connector. GO TO 7.
No Disconnect blower motor and resistor harness connectors. GO TO 6.
GI
MA
EM
LC
EC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
SC
EL
IDX
TROUBLE DIAGNOSESMANUAL
Blower Motor (Cont’d)
HA-47
Page 2984 of 3189
6 CHECK CIRCUIT CONTINUITY BETWEEN BLOWER MOTOR AND RESISTOR
Check circuit continuity between blower motor harness terminal No. 2 and fan resistor harness terminal No. 1.
RHA700HA
Continuity should exist.
If OK, check harness for short.
OK or NG
OK Poor contact between the resistor and blower motor connector.
NG Repair harness or connector.
7 CHECK GROUND CIRCUIT FOR HEATER CONTROL PANEL
Check circuit continuity between fan switch harness terminal No. 13 and body ground.
NHA506
Continuity should exist.
If OK, check harness for short.
OK or NG
OK GO TO 8.
NG Repair harness or connector.
8 CHECK RESISTOR AFTER DISCONNECTING IT
(Refer to Electrical Components Inspection.)
(HA-51)
OK or NG
OK GO TO 9.
NG Replace resistor.
9 CHECK RESISTOR HARNESS CONNECTOR
Reconnect resistor harness connector.
OK or NG
1GO TO 12.
2, 3, 4GO TO 10.
TROUBLE DIAGNOSESMANUAL
Blower Motor (Cont’d)
HA-48