Page 2017 of 2493
5 CHECK CIRCUIT CONTINUITY BETWEEN HEATER CONTROL PANEL AND INTAKE DOOR MOTOR
Check circuit continuity between heater control panel harness terminal No. 10 (11) and intake door motor harness terminal
No. 2 (1)
NHA498
Continuity should exist.
If OK, check harness for short.
OK or NG
OK©Replace heater control panel.
NG©Repair harness or connector.
NHA499
ELECTRICAL COMPONENT INSPECTIONNJHA0216Recirculation (REC) SwitchNJHA0216S01Check continuity between terminals.
Terminals REC switch Continuity
1-5ON Yes
OFF No
NHA500
Intake Door MotorNJHA0216S02Supply 12V direct current to intake door motor terminal No. 1 and
2.
12V direct current supply terminals
Intake door position
+þ
1 2 FRE
2 1 REC
TROUBLE DIAGNOSES
Intake Door (Cont'd)
HA-45
Page 2018 of 2493
Mode Door
TROUBLE DIAGNOSIS PROCEDURE FOR MODE DOOR=NJHA0137SYMPTOM:
+Air outlet does not change.
INSPECTION FLOW
NHA382
*1: HA-20
*2: HA-40*3: HA-47 *4: HA-39
TROUBLE DIAGNOSES
Mode Door
HA-46
Page 2019 of 2493
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 DIAGNOSES
Mode Door (Cont'd)
HA-47
Page 2020 of 2493
Air Mix Door
TROUBLE DIAGNOSIS PROCEDURE FOR AIR MIX DOOR=NJHA0140SYMPTOM:
+Air mix door does not change.
INSPECTION FLOW
NHA383
*1: HA-49
*2: HA-40*3: HA-40 *4: HA-39
TROUBLE DIAGNOSES
Air Mix Door
HA-48
Page 2021 of 2493
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 DIAGNOSES
Air Mix Door (Cont'd)
HA-49
Page 2022 of 2493
Max Hot Door (For Scandinavia and Cold Spec
Models)
TROUBLE DIAGNOSIS FOR MAX HOT DOOR=NJHA0223SYMPTOM:
+Max hot door does not change.
INSPECTION FLOW
RHA915H
*1: HA-51
*2: HA-40*3: HA-40 *4: HA-39
TROUBLE DIAGNOSES
Max Hot Door (For Scandinavia and Cold Spec Models)
HA-50
Page 2023 of 2493

RHA796H
COMPONENT DESCRIPTIONNJHA0217Max Hot Door MotorNJHA0217S01The max hot door motor is attached to the heater & cooling unit.
Mode door positionTemperature control
positionMax hot door position
FOOT, D/FFull hot OPEN
All except full hot SHUT
VENT, B/L, DEFFull hot SHUT
All except full hot SHUT
DIAGNOSTIC PROCEDURE FOR MAX HOT DOOR MOTOR CIRCUITNJHA0218
1 CHECK SIGNAL FOR OPEN OPERATION
1. Turn ignition switch to ON position.
2. Set temperature dial to ªFULL COLDº position, and mode control dial to the ªDEF (
)º, ªVENT ()º or ªBI-LEVEL
(
)º position.
3. Set temperature dial to ªFULL HOTº position, and mode control dial to the ªFOOT (
)º or ªFOOT/DEF ()º posi-
tion. At this time, does an approx. 12 volts exist between the max hot door motor harness connector terminal 7 and the
body ground until the max hot door is fully opened?
NHA501
YesorNo
Ye s©GO TO 2.
[If max hot door motor does not operate even if approx. 12 volts exist, then replace max
hot door motor. (Before replacing the motor, check for smooth operation of the door.)]
No©GO TO 3.
TROUBLE DIAGNOSES
Max Hot Door (For Scandinavia and Cold Spec Models) (Cont'd)
HA-51
Page 2024 of 2493

2 CHECK SIGNAL FOR CLOSE OPERATION
1. Turn ignition switch to ON position.
2. Set temperature dial to ªFULL HOTº position, and mode control dial to the ªFOOT (
)º or ªFOOT/DEF ()º position
3. Set temperature dial to ªFULL COLDº position, and the mode control dial to the ªDEF (
)º, ªVENT ()º or ªBI-
LEVEL (
)º position. At this time, does an approx. 12 volts exist between the max hot door motor harness connector
terminal 6 and the body ground until the max hot door is fully closed?
NHA502
YesorNo
Ye s©INSPECTION END. (Max hot door motor is OK.)
[If max hot door motor does not operate even if approx. 12 volts exist, then replace the
max hot door motor. (Before replacing the motor, check for smooth operation of the
door.)]
No©GO TO 3.
3 CHECK SIGNAL CIRCUIT
1. Disconnect heater control panel harness connector and max hot door motor harness connector.
2. Check for continuity between heater control panel harness connector terminal 19 and max hot door motor harness con-
nector terminal 6, heater control panel harness connector terminal 21 and max hot door motor harness connector termi-
nal 7.
NHA503
Continuity should exist.
If OK, check harness for short.
YesorNo
Ye s©GO TO 4.
No©Repair harness or connector.
If harness and connector are OK, replace heater control panel.
TROUBLE DIAGNOSES
Max Hot Door (For Scandinavia and Cold Spec Models) (Cont'd)
HA-52