Infiniti QX56 (Z62). Manual — part 805
POWER SUPPLY AND GROUND CIRCUIT
HAC-111
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front air mix door motor LH connector.
3.
Check continuity between front air mix door motor LH harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF FRONT AIR MIX DOOR MOTOR (DRIVER SIDE)
Check front air mix door motor (driver side) is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace front air mix door motor (driver side). Refer to
HAC-153, "AIR MIX DOOR MOTOR :
.
NO
>> Repair or replace malfunctioning part.
4.
CHECK FRONT AIR MIX DOOR MOTOR (DRIVER SIDE) POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front air mix door motor LH connector and A/C auto amp. connector.
3.
Check continuity between front air mix door motor LH harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE)
FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE) : Diagnosis Procedure
INFOID:0000000006275950
1.
CHECK FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between front air mix door motor RH harness connector and ground.
+
−
Voltage
(Approx.)
Front air mix door motor LH
Connector
Terminal
M252
1
Ground
12 V
Front air mix door motor LH
—
Continuity
Connector
Terminal
M252
2
Ground
Existed
Front air mix door motor LH
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M252
1
M50
17
Existed
+
−
Voltage
(Approx.)
Front air mix door motor RH
Connector
Terminal
M255
1
Ground
12 V
HAC-112
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE) GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front air mix door motor RH connector.
3.
Check continuity between front air mix door motor RH harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE)
Check front air mix door motor (passenger side) is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace front air mix door motor (passenger side). Refer to
HAC-153, "AIR MIX DOOR MOTOR :
NO
>> Repair or replace malfunctioning part.
4.
CHECK FRONT AIR MIX DOOR MOTOR (PASSENGER SIDE) POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front air mix door motor RH connector and A/C auto amp. connector.
3.
Check continuity between front air mix door motor RH harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
FRONT MODE DOOR MOTOR
FRONT MODE DOOR MOTOR : Diagnosis Procedure
INFOID:0000000006275951
1.
CHECK FRONT MODE DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between front mode door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK FRONT MODE DOOR MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front mode door motor connector.
Front air mix door motor RH
—
Continuity
Connector
Terminal
M255
2
Ground
Existed
Front air mix door motor RH
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M255
1
M50
17
Existed
+
−
Voltage
(Approx.)
Front mode door motor
Connector
Terminal
M253
1
Ground
12 V
POWER SUPPLY AND GROUND CIRCUIT
HAC-113
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
3.
Check continuity between front mode door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF FRONT MODE DOOR MOTOR CONTROL LINKAGE
Check front mode door motor control linkage is properly installed. Refer to
.
Is the inspection result normal?
YES
>> Replace front mode door motor. Refer to
HAC-153, "MODE DOOR MOTOR : Removal and Instal-
.
NO
>> Repair or replace malfunctioning part.
4.
CHECK FRONT MODE DOOR MOTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect front mode door motor connector and A/C auto amp. connector.
3.
Check continuity between front mode door motor harness connector and A/C auto amp. harness connec-
tor.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
INTAKE DOOR MOTOR
INTAKE DOOR MOTOR : Diagnosis Procedure
INFOID:0000000006275952
1.
CHECK INTAKE MODE DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between intake mode door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK INTAKE MODE DOOR MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect intake mode door motor connector.
3.
Check continuity between intake mode door motor harness connector and ground.
Front mode door motor
—
Continuity
Connector
Terminal
M253
2
Ground
Existed
Front mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M253
1
M50
17
Existed
+
−
Voltage
(Approx.)
Intake mode door motor
Connector
Terminal
M254
1
Ground
12 V
Intake mode door motor
—
Continuity
Connector
Terminal
M254
2
Ground
Existed
HAC-114
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
POWER SUPPLY AND GROUND CIRCUIT
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF INTAKE MODE DOOR MOTOR CONTROL LINKAGE
Check intake mode door motor control linkage is properly installed. Refer to
Is the inspection result normal?
YES
>> Replace intake mode door motor. Refer to
HAC-153, "INTAKE DOOR MOTOR : Removal and
NO
>> Repair or replace malfunctioning part.
4.
CHECK INTAKE MODE DOOR MOTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect intake mode door motor connector and A/C auto amp. connector.
3.
Check continuity between intake mode door motor harness connector and A/C auto amp. harness con-
nector.
Is the inspection result normal?
YES
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> Repair harness or connector.
REAR AIR MIX DOOR MOTOR
REAR AIR MIX DOOR MOTOR : Diagnosis Procedure
INFOID:0000000006275953
1.
CHECK REAR AIR MIX DOOR MOTOR POWER SUPPLY
1.
Turn ignition switch ON.
2.
Check voltage between rear air mix door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> GO TO 4.
2.
CHECK REAR AIR MIX DOOR MOTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect rear air mix door motor connector.
3.
Check continuity between rear air mix door motor harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK INSTALLATION OF REAR AIR MIX DOOR MOTOR
Check rear air mix door motor is properly installed. Refer to
.
Intake mode door motor
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M254
1
M50
17
Existed
+
−
Voltage
(Approx.)
Rear air mix door motor
Connector
Terminal
B210
1
Ground
12 V
Rear air mix door motor
—
Continuity
Connector
Terminal
B210
2
Ground
Existed
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