INFINITI QX56 2011 Factory Service Manual

PWO-22
< BASIC INSPECTION >[AC 120 V OUTLET]
DIAGNOSIS AND REPAIR WORK FLOW
>> GO TO 2.
2.SYMPTOM CHECK
Check the symptom from t he customer's information.
>> GO TO 3.
3.FAIL-SAFE ACTIVATION CHECK
Check that the symptom is applied to the fail-safe activation.
Does the fail-safe activate?
YES >> GO TO 4.
NO >> GO TO 5.
4.SYSTEM DIAGNOSIS
Perform the system diagnosis for the system that the fa il-safe activates. Specify the malfunctioning part.
>> GO TO 6.
5.SYMPTOM DIAGNOSIS
Perform the symptom diagnosis. Specify the malfunctioning part.
>> GO TO 6.
6.MALFUNCTIONING PART REPAIR
Repair or replace the malfunctioning part.
>> GO TO 7.
7.REPAIR CHECK (OPERATION CHECK)
Check the operation of AC 120 V outlet.
Does it operate normally?
YES >> INSPECTION END
NO >> GO TO 3.
Revision: 2010 May2011 QX56

PWO
POWER SUPPLY AND GROUND CIRCUITPWO-23
< DTC/CIRCUIT DIAGNOSIS > [AC 120 V OUTLET]
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DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis ProcedureINFOID:0000000006257089
1.CHECK FUSE
Check that the following fuse is not blown.
Is the fuse fusing?
YES >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO >> GO TO 2.
2.CHECK INVERTER UNIT POWER SUPPLY CIRCUIT
Check voltage between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the inverter unit power supply circuit.
3.CHECK INVERTER UNIT GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the inverter unit connector.
3. Check for continuity between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair or replace the inverter unit ground circuit.
Signal name Fuse No.
Battery power supply 79
Te r m i n a l Condition
Vo l ta g e
(Approx.)
(+) (–)
Inverter unit GroundIgnition switch
Connector Terminal
M143 4 OFF Battery voltage
Inverter unit GroundContinuity
Connector Terminal
M143 8 Existed
Revision: 2010 May2011 QX56

PWO-24
< DTC/CIRCUIT DIAGNOSIS >[AC 120 V OUTLET]
AC 120 V OUTLET MAIN SWITCH POWER SUPPLY CIRCUIT
AC 120 V OUTLET MAIN SWITCH
POWER SUPPLY CIRCUIT
Diagnosis ProcedureINFOID:0000000006257095
1.CHECK FUSE
Check that the following fuse is not blown.
Is the fuse fusing?
YES >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY FOR AC 120 V OUTLET MAIN SWITCH
1. Turn ignition switch ON.
2. Check for voltage between the AC 120 V main switch harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Repair the AC 120 V main switch power supply circuit.
Signal name Fuse No.
Ignition power supply 3
Te r m i n a l s Condition
Vo l ta g e
(Approx.)
(+) (–)
AC 120 V outlet main switch
GroundIgnition switch
Connector Terminal
M144 1 OFF 0 V
ON 12 V
Revision: 2010 May2011 QX56

PWO
AC 120 V OUTLET MAIN SWITCH INPUT SIGNAL CIRCUITPWO-25
< DTC/CIRCUIT DIAGNOSIS > [AC 120 V OUTLET]
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AC 120 V OUTLET MAIN SWITCH
INPUT SIGNAL CIRCUIT
Diagnosis ProcedureINFOID:0000000006257093
1.CHECK HARNESS BETWEEN INVERTER UNIT AND AC 120 V OUTLET MAIN SWITCH
1. Turn ignition switch OFF.
2. Disconnect inverter unit connector and AC 120 V outlet main switch connector.
3. Check for continuity between the inverter unit harness connector and AC 120 V outlet main switch har- ness connector.
4. Check for continuity between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the harnesses or connectors.
2.CHECK AC 120 V OUTLET MAIN SWITCH INPUT SIGNAL
1. Connect inverter unit connector and AC 120 V outlet main switch connector.
2. Turn ignition switch ON.
3. AC 120 V outlet main switch ON.
4. Check for voltage between the inverter unit harness connector and ground.
Is the inspection result normal?
YES >> INSPECTION END
NO >> GO TO 3.
3.CHECK AC 120 V OUTLET MAIN SWITCH
1. Turn ignition switch OFF.
2. Remove AC 120 V outlet main switch.
3. Check AC 120 V outlet main switch. Refer to PWO-25, "
Component Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace AC 120 V outlet main switch.
Component InspectionINFOID:0000000006257096
1.CHECK AC 120 V OUTLET MAIN SWITCH
Check continuity of AC 120 V outlet main switch.
Inverter unit AC 120 V outlet main switch Continuity
Connector Terminal Connector Terminal
M1436M1443Existed
Inverter unit GroundContinuity
Connector Terminal
M143 6 Not existed
Te r m i n a l s Condition
Vol tag e
(Approx.)
(+) (–)
Inverter unit
GroundAC 120 V out-
let main switch
Connector Terminal
M143 6 OFF 0 V
ON 12 V
Revision: 2010 May2011 QX56

PWO-26
< DTC/CIRCUIT DIAGNOSIS >[AC 120 V OUTLET]
AC 120 V OUTLET MAIN SWITCH INPUT SIGNAL CIRCUIT
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace AC 120 V outlet main switch.
Terminal Condition Continuity
13 When AC 120 V outlet main switch is ON Existed
When AC 120 V outlet main switch is OFF Not existed
Revision: 2010 May2011 QX56

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AC 120 V POWER OUTPUT CIRCUIT
PWO-27
< DTC/CIRCUIT DIAGNOSIS > [AC 120 V OUTLET]
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AC 120 V POWER OUTPUT CIRCUIT
Diagnosis ProcedureINFOID:0000000006257091
1.CHECK HARNESS BETWEEN INVERTER UNIT AND AC 120 V OUTLET
1. Turn ignition switch OFF.
2. Disconnect inverter unit connector and AC 120 V outlet connector.
3. Check for continuity between the inverter uni t harness connector and AC 120 V outlet harness connector.
4. Check for continuity between inverter unit harness connector and ground.
5. Check for continuity between inverter unit harness connector.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the harnesses or connectors.
2.CHECK INVERTER UNIT OUTPUT SIGNAL
1. Connect inverter unit connector and AC 120 V outlet connector.
2. Turn ignition switch ON.
3. AC 120 V outlet main switch ON. (AC 120 V outlet main switch indicator ON)
4. Check voltage between inverter unit harness connector.
CAUTION:
 To measure AC 120 V output signal, al ways use the circuit tester AC range.
 Never allow the probes to contact each other.
Is the inspection result normal?
YES >> GO TO 3
NO >> Replace inverter unit.
3.CHECK AC 120 V OUTLET VOLTAGE
1. AC 120 V outlet main switch ON. (AC 120 V outlet main switch indicator ON)
2. Check voltage between AC 120 V outlet.
Inverter unit AC 120 V outlet Continuity
Connector Terminal Connector Terminal
M143 5
M145 1
Existed
12
Inverter unit GroundContinuity
Connector Terminal
M143 5
Not existed
1
Inverter unit Continuity
Connector Terminal
M143 5 1 Not existed
Te r m i n a l s Condition
Vo l ta g e
(Approx.)
(+) (-)
Inverter unit Inverter unit AC 120 V outlet
main switch
Connector Terminal Connector Terminal
M1435M1431 OFF 0 V
ON AC 120 V
Revision: 2010 May2011 QX56

PWO-28
< DTC/CIRCUIT DIAGNOSIS >[AC 120 V OUTLET]
AC 120 V POWER OUTPUT CIRCUIT
CAUTION:
 To measure AC 120 V output signal, alw
ays use the circuit tester AC range.
 Never allow the probes to contact each other.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace AC 120 V outlet.
Te r m i n a l s Condition
Vo l ta g e
(Approx.)
(+) (-)
AC 120 V outlet AC 120 V outlet
main switch
Te r m i n a l
12 OFF 0 V
ON AC 120 V
Revision: 2010 May2011 QX56

PWO
AC 120 V OUTLET MAIN SWITCH INDICATOR CIRCUIT
PWO-29
< DTC/CIRCUIT DIAGNOSIS > [AC 120 V OUTLET]
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AC 120 V OUTLET MAIN SWITCH INDICATOR CIRCUIT
Diagnosis ProcedureINFOID:0000000006257098
1.CHECK HARNESS BETWEEN IN
VERTER UNIT AND AC 120 V OUTLET MAIN SWITCH
1. Turn ignition switch OFF.
2. Disconnect inverter unit connector and AC 120 V outlet main switch connector.
3. Check continuity between inverter unit harness connector and AC 120 V main switch harness connector.
4. Check continuity between inverter unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the harnesses or connectors.
2.CHECK AC 120 V OUTLET MAIN SWITCH GROUND CIRCUIT
Check continuity between AC 120 V outle t main switch harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the harnesses or connectors.
3.CHECK AC 120 V OUTLET MAIN SWITCH INDICATOR OUTPUT SIGNAL
1. Connect AC 120 V outlet main switch connector and inverter unit connector.
2. Turn ignition switch ON.
3. AC 120 V outlet main switch ON. (AC 120 V output is normal)
4. Check for voltage between the inverter unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace inverter unit.
4.CHECK AC 120 V OUTLET MAIN SWITCH INDICATOR
1. AC 120 V outlet main switch ON. (AC 120 V output is normal)
2. Check that AC 120 V outlet main switch indicator is illuminated.
Is the inspection result normal?
Inverter unit AC 120 V outlet main switch Continuity
Connector Terminal Connector Terminal
M1437M1445Existed
Inverter unit GroundContinuity
Connector Terminal
M143 7 Not existed
AC 120 V outlet main switch GroundContinuity
Connector Terminal
M144 6 Existed
Te r m i n a l s Condition
Vol tag e
(Approx.)
(+) (–)
Inverter unit
GroundAC 120 V out-
let main
switch
Connector Terminal
M143 7 OFF 0 V
ON 5.2 V
Revision: 2010 May2011 QX56

PWO-30
< DTC/CIRCUIT DIAGNOSIS >[AC 120 V OUTLET]
AC 120 V OUTLET MAIN SWITCH INDICATOR CIRCUIT
YES >> INSPECTION END
NO >> Replace AC 120 V outlet main switch.
Revision: 2010 May2011 QX56

PWO
NO OUTPUT FROM AC 120 V OUTLETPWO-31
< SYMPTOM DIAGNOSIS > [AC 120 V OUTLET]
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SYMPTOM DIAGNOSIS
NO OUTPUT FROM AC 120 V OUTLET
Diagnosis ProcedureINFOID:0000000006257108
1.CHECK FAIL-SAFE ACTIVATION
Check if the symptom is caused by a fail-safe operation. Refer to PWO-17, "
Fail-safe".
Is fail-safe operating?
YES >> Repair the part causing fail-safe operation.
NO >> GO TO 2.
2.CHECK INVERTER UNIT POWER SUPPLY CIRCUIT
Check inverter unit power supply circuit. Refer to PWO-23, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace the malfunctioning parts.
3.CHECK AC 120 V OUTLET MAIN SWITCH POWER SUPPLY CIRCUIT
Check AC 120 V outlet main switch power supply circuit. Refer to PWO-24, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair or replace the malfunctioning parts.
4.CHECK AC 120 V OUTLET MAIN SWITCH INPUT SIGNAL CIRCUIT
Check AC 120 V outlet main switch input signal circuit. Refer to PWO-25, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the malfunctioning parts.
5.CHECK INVERTER UNIT POWER OUTPUT CIRCUIT
Check inverter unit power output circuit. Refer to PWO-27, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> Refer to GI-40, "Intermittent Incident".
NO >> Repair or replace the malfunctioning parts.
Revision: 2010 May2011 QX56