Infiniti QX56 (Z62). Manual — part 808
FRONT BLOWER MOTOR
HAC-123
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
C
D
E
F
G
H
J
K
L
M
A
B
HAC
N
O
P
NO
>> Replace front blower motor. Refer to
VTL-16, "FRONT A/C UNIT : Removal and Installation"
Component Inspection (Blower Relay)
INFOID:0000000006275970
1.
CHECK BLOWER RELAY
1.
Turn ignition switch OFF.
2.
Remove blower relay.
3.
Check continuity between blower relay terminal 3 and 5 when
voltage is supplied between terminal 1 and 2.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace blower relay.
Terminal
Voltage
Continuity
3
5
ON
Existed
OFF
Not existed
JSIIA1551ZZ
HAC-124
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
IONIZER
IONIZER
Component Function Check
INFOID:0000000006275971
1.
CHECK IONIZER OPERATION SOUND
1.
Turn ignition switch ON.
2.
Check ionizer operation sound (whirring sound) in duct by putting an ear to the side ventilator grille (driver
side) outlet while pressing fan switch and OFF switch alternately.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
HAC-124, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006275972
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10A fuse [No.4, located in fuse block (J/B)].
NOTE:
Refer to
PG-140, "Fuse, Connector and Terminal Arrangement"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK IONIZER POWER SUPPLY
1.
Disconnect ionizer connector.
2.
Turn ignition switch ON.
3.
Check voltage between ionizer harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector between ionizer and fuse block (J/B).
3.
CHECK IONIZER GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check continuity between ionizer harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair harness or connector.
4.
CHECK IONIZER (ON/OFF) CONTROL SIGNAL CIRCUIT
1.
Connect ionizer connector.
2.
Disconnect A/C auto amp. connector.
3.
Turn ignition switch ON.
4.
Check voltage between A/C auto amp. harness connector and ground.
+
−
Voltage
Ionizer
Connector
Terminal
M130
1
Ground
Battery voltage
Ionizer
—
Continuity
Connector
Terminal
M130
3
Ground
Existed
IONIZER
HAC-125
< 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
>> Replace A/C auto amp.. Refer to
HAC-146, "Removal and Installation"
NO
>> GO TO 5.
5.
CHECK IONIZER (ON/OFF) CONTROL SIGNAL CIRCUIT FOR OPEN
1.
Turn ignition switch OFF.
2.
Disconnect ionizer connector.
3.
Check continuity between A/C auto amp. harness connector and ionizer harness connector.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair harness or connector.
6.
CHECK IONIZER (ON/OFF) CONTROL SIGNAL CIRCUIT FOR SHORT
Check continuity between A/C auto amp. harness connector and ground.
Is the inspection result normal?
YES
>> Replace ionizer. Refer to
HAC-155, "Removal and Installation"
NO
>> Repair harness or connector.
+
−
Voltage
A/C auto amp.
Connector
Terminal
M50
5
Ground
Battery voltage
A/C auto amp.
Ionizer
Continuity
Connector
Terminal
Connector
Terminal
M50
5
M130
4
Existed
A/C auto amp.
—
Continuity
Connector
Terminal
M50
5
Ground
Not existed
HAC-126
< DTC/CIRCUIT DIAGNOSIS >
[AUTOMATIC AIR CONDITIONING]
MAGNET CLUTCH
MAGNET CLUTCH
Component Function Check
INFOID:0000000006275973
1.
CHECK MAGNET CLUTCH OPERATION
Perform auto active test of IPDM E/R. Refer to
PCS-10, "Diagnosis Description"
.
Does it operate normally?
YES
>> INSPECTION END
NO
>> Refer to
HAC-126, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000006275974
1.
CHECK FUSE
1.
Turn ignition switch OFF.
2.
Check 10A fuse (No. 49, located in IPDM E/R).
NOTE:
Refer to
PG-140, "Fuse, Connector and Terminal Arrangement"
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
2.
CHECK MAGNET CLUTCH POWER SUPPLY CIRCUIT
1.
Disconnect compressor connector and IPDM E/R connector.
2.
Check continuity between compressor harness connector and IPDM E/R harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK MAGNET CLUTCH
Directly apply battery voltage to the magnet clutch. Check operation visually and by sound.
Does it operate normally?
YES
>> Replace IPDM E/R. Refer to
PCS-32, "Removal and Installation"
NO
>> Replace magnet clutch. Refer to
HA-31, "MAGNET CLUTCH : Removal and Installation of Com-
.
Compressor
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
F43
1
E15
56
Existed
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