Infiniti FX35, FX50 (S51). Manual — part 1169
AIR MIX DOOR MOTOR (DRIVER SIDE)
HAC-73
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect air mix door motor (driver side) connector.
3.
Check continuity between air mix door motor (driver side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace air mix door motor (driver side).
NO
>> Repair harness or connector.
5.
CHECK INSTALLATION OF AIR MIX DOOR MOTOR (DRIVER SIDE)
Check air mix door motor is properly installed (driver side). Refer to
.
Is it installed normally?
YES
>> INSPECTION END
NO
>> Repair or replace air mix door motor (driver side).
(+)
(
−
)
Voltage
Air mix door motor (driver side)
—
Connector
Terminal
M252
3
Ground
SJIA1453J
Air mix door motor (driver side)
—
Continuity
Connector
Terminal
M252
2
Ground
Existed
HAC-74
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
AIR MIX DOOR MOTOR (PASSENGER SIDE)
AIR MIX DOOR MOTOR (PASSENGER SIDE)
Description
INFOID:0000000005246257
COMPONENT DESCRIPTION
Air Mix Door Motor
The air mix door motor (passenger side) (1) is attached to the heater
& cooling unit assembly. It rotates so that the air mix door is opened
or closed to a position set by the unified meter and A/C amp. Motor
rotation is then conveyed through a shaft and the air mix door posi-
tion feedback is then sent to the unified meter and A/C amp. by PBR
built-in air mix door motor.
Component Function Check
INFOID:0000000005246258
1.
CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK
1.
Turn temperature control dial (passenger side) clockwise until 32.0
°
C (90
°
F) is displayed.
2.
Check for warm air at discharge air outlets.
3.
Turn temperature control dial (passenger side) counterclockwise until 18.0
°
C (60
°
F) is displayed.
4.
Check for cool air at discharge air outlets.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to diagnosis procedure. Refer to
Diagnosis Procedure
INFOID:0000000005246259
1.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Refer to
HAC-57, "WITHOUT ACCS : Diagnosis Description"
(WITHOUT
ACCS) or
HAC-62, "WITH ACCS : Diagnosis Description"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check voltage between air mix door motor (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK SIGNAL FOR AIR MIX DOOR MOTOR (PASSENGER SIDE)
Confirm A/C LAN signal between air mix door motor (passenger side) harness connector and ground using an
oscilloscope.
:
Vehicle front
JSIIA0139ZZ
(+)
(
−
)
Voltage
(Approx.)
Air mix door motor (passenger side)
—
Connector
Terminal
M255
1
Ground
12 V
AIR MIX DOOR MOTOR (PASSENGER SIDE)
HAC-75
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect air mix door motor (passenger side) connector.
3.
Check continuity between air mix door motor (passenger side) harness connector and ground.
Is the inspection result normal?
YES
>> Replace air mix door motor (passenger side).
NO
>> Repair harness or connector.
5.
CHECK INSTALLATION OF AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check air mix door motor is properly installed (passenger side). Refer to
.
Is it installed normally?
YES
>> INSPECTION END
NO
>> Repair or replace air mix door motor (passenger side).
(+)
(
−
)
Voltage
Air mix door motor (passenger side)
—
Connector
Terminal
M255
3
Ground
SJIA1453J
Air mix door motor (passenger side)
—
Continuity
Connector
Terminal
M255
2
Ground
Existed
HAC-76
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONER]
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR
WITHOUT ACCS
WITHOUT ACCS : Description
INFOID:0000000005246260
COMPONENT DESCRIPTION
Intake Door Motor
The intake door motor (1) is attached to the blower unit. It rotates so
that air is drawn from inlets set by the unified meter and A/C amp.
Motor rotation is conveyed to a lever which activates the intake door.
WITHOUT ACCS : Component Function Check
INFOID:0000000005246261
1.
CONFIRM SYMPTOM BY PERFORMING THE FOLLOWING OPERATIONAL CHECK
1.
Press intake switch.
2.
REC indicator turns ON.
3.
Listen for intake door position change (Slight change of blower sound can be heard.).
4.
Press intake switch again.
5.
FRE indicator turns ON.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to diagnosis procedure. Refer to
HAC-76, "WITHOUT ACCS : Diagnosis Procedure"
.
WITHOUT ACCS : Diagnosis Procedure
INFOID:0000000005246262
1.
PERFORM SELF-DIAGNOSIS
Perform self-diagnosis function. Refer to
HAC-57, "WITHOUT ACCS : Diagnosis Description"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK POWER SUPPLY FOR INTAKE DOOR MOTOR
Check voltage between intake door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK SIGNAL FOR INTAKE DOOR MOTOR
Confirm A/C LAN signal between intake door motor harness connector and ground using an oscilloscope.
:
Vehicle front
JSIIA0007GB
(+)
(
−
)
Voltage
(Approx.)
Intake door motor
—
Connector
Terminal
M254
1
Ground
12 V
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