Infiniti QX56 (Z62). Manual - part 808

 

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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-

pressor Clutch"

.

Compressor

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

F43

1

E15

56

Existed

 

 

 

 

 

 

 

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