Infiniti QX56 (Z62). Manual — part 1113
POWER SUPPLY AND GROUND CIRCUIT
SCS-89
< DTC/CIRCUIT DIAGNOSIS >
[AIR LEVELIZER CONTROL SYSTEM]
C
D
F
G
H
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J
K
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M
A
B
SCS
N
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POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000006256088
1.
CHECK AIR LEVELIZER CONTROL MODULE IGNITION POWER SUPPLY CIRCUIT
1.
Disconnect air levelizer control module connector.
2.
Turn ignition switch ON.
CAUTION:
Never start the engine.
3.
Check voltage between the air levelizer control module harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN AIR LEVELIZER CONTROL MODULE AND IPDM E/R
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector.
3.
Check continuity between air levelizer control module harness connector and IPDM E/R harness connec-
tor.
4.
Check continuity between air levelizer control module harness connector ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK IPDM E/R
Check the IPDM E/R. Refer to
PCS-10, "Diagnosis Description"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Repair or replace damaged parts.
Air levelizer control module
—
Voltage
Connector Terminal
B84
9
Ground
10 – 16 V
Air levelizer control module
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
B84
9
E10
5
Existed
Air levelizer control module
—
Continuity
Connector
Terminal
B84
9
Ground
Not existed
SCS-90
< DTC/CIRCUIT DIAGNOSIS >
[AIR LEVELIZER CONTROL SYSTEM]
CK SUSP INDICATOR LAMP CIRCUIT
CK SUSP INDICATOR LAMP CIRCUIT
Description
INFOID:0000000006256089
Air levelizer control module transmits CK SUSP indicator lamp signal to combination meter via CAN communi-
cation, when setting of standard vehicle height is incomplete. Based on the signal, combination meter turns
CK SUSP indicator lamp ON.
Component Function Check
INFOID:0000000006256090
1.
CHECK CK SUSP INDICATOR LAMP OPERATION
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “WARNING LAMP” in “Active Test” in “E-SUS”.
3.
While operating test item, check that the CK SUSP indicator lamp activates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Refer to
.
Diagnosis Procedure
INFOID:0000000006256091
1.
PERFORM SELF-DIAGNOSIS
CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” in “E-SUS”.
Are any DTC detected?
YES
>> Refer to
.
NO
>> GO TO 2.
2.
CHECK COMBINATION METER
Check combination meter. Refer to
MWI-29, "On Board Diagnosis Function"
.
Is the inspection result normal?
YES
>> Replace the air levelizer control module. Refer to
SCS-94, "Removal and Installation"
NO
>> Repair or replace the combination meter. Refer to
MWI-85, "Removal and Installation"
ON
: CK SUSP indicator lamp turns ON
OFF
: CK SUSP indicator lamp turns OFF
VEHICLE HEIGHT CANNOT BE RAISED
SCS-91
< SYMPTOM DIAGNOSIS >
[AIR LEVELIZER CONTROL SYSTEM]
C
D
F
G
H
I
J
K
L
M
A
B
SCS
N
O
P
SYMPTOM DIAGNOSIS
VEHICLE HEIGHT CANNOT BE RAISED
Description
INFOID:0000000006256092
Vehicle height remains in low status.
Diagnosis Procedure
INFOID:0000000006256093
1.
CHECK APPEARANCE
Visually check for fuse, malfunction of suspension components, installation malfunction, or deformation of
vehicle height sensor.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repaire or replace damaged parts.
2.
PERFORM SELF-DIAGNOSIS
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” in “E-SUS”.
Are any DTC detected?
YES
>> Refer to
.
NO
>> GO TO 3.
3.
PERFORM STANDARD VEHICLE HEIGHT SETTING
.
Is the symptom improved?
YES
>> INSPECTION END
NO
>> Replace the air levelizer control module. Refer to
SCS-92
< SYMPTOM DIAGNOSIS >
[AIR LEVELIZER CONTROL SYSTEM]
VEHICLE HEIGHT CANNOT BE LOWERED
VEHICLE HEIGHT CANNOT BE LOWERED
Description
INFOID:0000000006256094
Vehicle height remains in high status.
Diagnosis Procedure
INFOID:0000000006256095
1.
CHECK APPEARANCE
Visually check for fuse, malfunction of suspension components, installation malfunction, or deformation of
vehicle height sensor.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repaire or replace damaged parts.
2.
PERFORM SELF-DIAGNOSIS
1.
Turn ignition switch ON.
2.
Select “Self Diagnostic Result” in “E-SUS”.
Are any DTC detected?
YES
>> Refer to
.
NO
>> GO TO 3.
3.
PERFORM STANDARD VEHICLE HEIGHT SETTING
.
Is the symptom improved?
YES
>> INSPECTION END
NO
>> Replace the air levelizer control module. Refer to
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