Infiniti QX56 (JA60). Manual — part 295
4WD SHIFT INDICATOR LAMP AND 4LO INDICATOR LAMP DO NOT TURN ON
DLN-103
< SYMPTOM DIAGNOSIS >
[ATX14B]
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4WD SHIFT INDICATOR LAMP AND 4LO INDICATOR LAMP DO NOT
TURN ON
Description
INFOID:0000000005148857
4WD shift indicator lamp and 4LO indicator lamp do not turn ON for approx. 1 second when turning ignition
switch to ON.
Diagnosis Procedure
INFOID:0000000005148858
Regarding Wiring Diagram information, refer to
DLN-89, "Wiring Diagram - ALL-MODE 4WD SYSTEM -"
.
1.
CHECK TRANSFER CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS
.
Are the inspection results normal?
YES
>> GO TO 2.
NO
>> Repair as necessary.
2.
CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUITS
MWI-28, "COMBINATION METER : Diagnosis Procedure"
Are the inspection results normal?
YES
>> GO TO 3.
NO
>> Perform repairs as necessary.
3.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Check continuity between the following terminals.
-
Transfer control unit harness connector E142 (B) terminal 2 and
combination meter harness connector M24 (A) terminal 38.
-
Transfer control unit harness connector E142 (B) terminal 11
and combination meter harness connector M24 (A) terminal 29.
-
Transfer control unit harness connector E142 (B) terminal 12
and combination meter harness connector M24 (A) terminal 39.
-
Transfer control unit harness connector E142 (B) terminal 21
and combination meter harness connector M24 (A) terminal 28.
Also check harness for short to ground and short to power.
Are the inspection results normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK INDICATOR LAMP CIRCUIT
1. Connect combination meter harness connector.
2. Turn ignition switch ON.
Continuity should exist.
AWDIA0184ZZ
DLN-104
< SYMPTOM DIAGNOSIS >
[ATX14B]
4WD SHIFT INDICATOR LAMP AND 4LO INDICATOR LAMP DO NOT TURN ON
3. Ground the following terminals using suitable wiring.
-
Transfer control unit harness connector E142 terminal 2 and
ground.
-
Transfer control unit harness connector E142 terminal 11 and
ground.
-
Transfer control unit harness connector E142 terminal 12 and
ground.
-
Transfer control unit harness connector E142 terminal 21 and
ground.
Do indicator lamps turn on?
YES
>> GO TO 5.
NO
>> Replace combination meter. Refer to
.
5.
SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> GO TO 6.
6.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
SDIA2772E
4WD WARNING LAMP DOES NOT TURN ON
DLN-105
< SYMPTOM DIAGNOSIS >
[ATX14B]
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4WD WARNING LAMP DOES NOT TURN ON
Description
INFOID:0000000005148859
4WD warning lamp does not turn ON when turning ignition switch to ON.
Diagnosis Procedure
INFOID:0000000005148860
Regarding Wiring Diagram information, refer to
DLN-89, "Wiring Diagram - ALL-MODE 4WD SYSTEM -"
.
1.
CHECK TRANSFER CONTROL UNIT POWER SUPPLY AND GROUND CIRCUITS
.
Are the inspection results normal?
YES
>> GO TO 2.
NO
>> Repair as necessary.
2.
CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUITS
MWI-28, "COMBINATION METER : Diagnosis Procedure"
Are the inspection results normal?
YES
>> GO TO 3.
NO
>> Perform repairs as necessary.
3.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit and combination meter harness connectors.
3. Check continuity between the following terminals.
-
Transfer control unit harness connector E142 (A) terminal 5 and
combination meter harness connector M23 (B) terminal 49.
Also check harness for short to ground and short to power.
Are the inspection results normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK INDICATOR LAMP CIRCUIT
1. Connect combination meter harness connector.
2. Turn ignition switch ON. (Do not start engine.)
3. Ground the following terminal using suitable wiring.
-
Transfer control unit harness connector E142 terminal 5 and
ground.
Does 4WD warning lamp turn on?
YES
>> GO TO 5.
NO
>> Replace combination meter. Refer to
.
5.
SYMPTOM CHECK
Check again.
Are the inspection results normal?
YES
>> Inspection End.
Continuity should exist.
AWDIA0187ZZ
SDIA2774E
DLN-106
< SYMPTOM DIAGNOSIS >
[ATX14B]
4WD WARNING LAMP DOES NOT TURN ON
NO
>> GO TO 6.
6.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
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