2011 INFINITI QX56 ground

EXL-84
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
AFS CONTROL UNIT
AFS CONTROL UNIT : Diagnosis ProcedureINFOID:0000000006213953
1.FUSE INSPECTION
Check that the following fuses are not fusing.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the applicable circuit. And then replace the fuse.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit harness connector.
3. Turn ignition switch ON.
4. Check voltage between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between AFS control unit harness connectors and ground.
Is the inspection result normal?
YES >> Power supply and ground circuit are normal.
NO >> Repair harness or connector.
Signal name Connection position Fuse No. Capacity
Ignition power supply FUSE BLOCK (J/B) 3 10 A
(+)
(− ) Voltag e
(Approx.)
AFS control unit
Connector Terminal M135 1 Ground Battery voltage
AFS control unit GroundContinuity
Connector Terminal
M135 25 Existed
Revision: 2010 May2011 QX56

EXL-86
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
Component Function CheckINFOID:0000000006213955
1.CHECK HEADLAMP (HI) OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the test items, che ck that the headlamp (HI) is turned ON.
NOTE:
ON/OFF is repeated 1 second each.
Is the inspection result normal?
YES >> Headlamp (HI) circuit is normal.
NO >> Refer to EXL-86, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213956
1.CHECK HEADLAMP (HI) OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Turn ignition switch ON.
4. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
5. With operating the test items, check vo ltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK HEADLAMP (HI) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connec tor and front combination lamp harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
3.CHECK HEADLAMP (HI) FUSE
1. Turn ignition switch OFF. Hi : Headlamp (HI) ON
Off : Headlamp (HI) OFF
(+)
(− ) Test item Vo l ta g e
(Approx.)
IPDM E/R
Connector Terminal
RH E1549
GroundEXTERNAL
LAMPS Hi Battery voltage
Off 0 V
LH 50 Hi Battery voltage
Off 0 V
IPDM E/R Front combination lamp Continuity
Connector Terminal Connector Terminal
RH E1549 E119
6 Existed
LH 50 E118
Revision: 2010 May2011 QX56

HEADLAMP (HI) CIRCUITEXL-87
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
2. Check that the following fuses are not fusing.
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> GO TO 4.
4.CHECK HEADLAMP HIGH (HI) SHORT CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO >> Repair or replace harness. And then replace the fuse.
5.CHECK HEADLAMP (HI) GROUND OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Check continuity between front combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Replace front combination lamp.
NO >> Repair or replace harness.
Unit Location Fuse No. Capacity
Headlamp HI (RH) IPDM E/R #51
10 A
Headlamp HI (LH) #52
IPDM E/R
GroundContinuity
Connector Terminal
RH E1549
Not existed
LH 50
Front combination lamp
GroundContinuity
Connector Terminal
RH E119 2Existed
LH E118
Revision: 2010 May2011 QX56

EXL-88
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
HEADLAMP (LO) CIRCUIT
HEADLAMP (LO) CIRCUIT
Component Function CheckINFOID:0000000006213957
1.CHECK HEADLAMP (LO) OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the test items, che ck that the headlamp (LO) is turned ON.
Is the inspection result normal?
YES >> Headlamp (LO) is normal.
NO >> Refer to EXL-88, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213958
1.CHECK HEADLAMP (LO) OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Turn ignition switch ON.
4. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
5. With operating the test items, check vo ltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK HEADLAMP (LO) OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connec tor and front combination lamp harness connector.
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace harness.
3.CHECK HEADLAMP (LO) FUSE
1. Turn ignition switch OFF.
2. Check that the following fuses are not fusing. Lo : Headlamp (LO) ON
Off : Headlamp (LO) OFF
(+)
(− ) Test item Vo l ta g e
(Approx.)
IPDM E/R
Connector Terminal
RH E1552
GroundEXTERNAL
LAMPS Lo Battery voltage
Off 0 V
LH 51 Lo Battery voltage
Off 0 V
IPDM E/R Front combination lamp Continuity
Connector Terminal Connector Terminal
RH E1552 E119
5 Existed
LH 51 E118
Revision: 2010 May2011 QX56

HEADLAMP (LO) CIRCUITEXL-89
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> GO TO 4.
4.CHECK HEADLAMP (LO) SHORT CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO >> Repair or replace harness. And then replace the fuse.
5.CHECK HEADLAMP (LO) GROUND OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect front combination lamp connector.
3. Check continuity between front combination lamp harness connector and ground.
Is the inspection result normal?
YES >> Perform the xenon headl amp diagnosis. Refer to EXL-90, "Diagnosis Procedure".
NO >> Repair or replace harness.
Unit Lotion Fuse No. Capacity
Headlamp LO (RH) IPDM E/R #54
15 A
Headlamp LO (LH) #53
IPDM E/R
GroundContinuity
Connector Terminal
RH E1552
Not existed
LH 51
Front combination lamp
GroundContinuity
Connector Terminal
RH E119 1Existed
LH E118
Revision: 2010 May2011 QX56

HEADLAMP LEVELIZER CIRCUITEXL-91
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
HEADLAMP LEVELIZER CIRCUIT
Component Function CheckINFOID:0000000006213960
1.CHECK AIMING MOTOR OPERATION
CONSULT-III ACTIVE TEST
1. Start the engine.
2. Turn the lighting switch 2ND.
3. Select “LEVELIZER TEST” of ADAP TIVE LIGHT active test item.
4. With operating the test item, check the operation.
Is the operation normal?
YES >> Headlamp levelizer circuit is normal.
NO >> Refer to EXL-91, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213961
1.CHECK AIMING MOTOR DRIVE SIGNAL OUTPUT
CONSULT-III ACTIVE TEST
1. Start the engine.
2. Turn light switch 2ND.
3. Select “LEVELIZER TEST” of ADAP TIVE LIGHT active test item.
4. With operating the test item, check voltage between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> GO TO 2.
NO >> GO TO 3.
2.CHECK AIMING MOTOR DRIVE SIGNAL OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and headlamp aiming motor connector.
3. Check continuity between AFS control unit har ness connector and head lamp aiming motor harness con-
nector.
Is the inspection result normal?
YES >> Replace front combination lamp.
NO >> Repair or replace harness.
Te s t i t e m Optical axis
LEVELIZER TEST
Origin Standard positonPeak Lowest position
(+) (− ) Test item Voltag e
(Approx.)
AFS control unit
Connector Terminal
RH M13519
Ground LEVELIZER TEST Origin 7.5 V
Peak 7.3 V
LH 40 Origin 7.5 V
Peak 7.3 V
AFS control unit Headlamp aiming motor
Continuity
Connector Terminal Connector Terminal
RH M13519 E121
1 Existed
LH 40 E120
Revision: 2010 May2011 QX56

EXL-92
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
HEADLAMP LEVELIZER CIRCUIT
3.CHECK AIMING MOTOR DRIVE
SIGNAL SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and headlamp aiming motor connector.
3. Check continuity between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace AFS control unit. Refer to EXL-135, "Removal and Installation"
NO >> Repair or replace harness.
AFS control unit
GroundContinuity
Connector Terminal
RH M13519
Not existed
LH 40
Revision: 2010 May2011 QX56

EXL-94
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
FRONT FOG LAMP CIRCUIT
FRONT FOG LAMP CIRCUIT
Component Function CheckINFOID:0000000006213962
1.CHECK FRONT FOG LAMP OPERATION
CONSULT-III ACTIVE TEST
1. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
2. With operating the test items, check that the front fog lamp is turned ON.
Is the inspection result normal?
YES >> Front fog lamp circuit is normal.
NO >> Refer to EXL-94, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006213963
1.CHECK FRONT FOG LAMP FUSE
1. Turn ignition switch OFF.
2. Check that the following fuse is not fusing.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK FRONT FOG LAMP SHORT CIRCUIT
1. Disconnect front fog lamp connector.
2. Check continuity between IP DM E/R harness connector and ground.
Is the inspection result normal?
YES >> Replace fuse. (Replace IPDM E/R if the fuse is fusing again.)
NO >> Repair or replace harness. And then replace the fuse.
3.CHECK FRONT FOG LAMP BULB
Check the applicable lamp bulb.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Replace bulb.
4.CHECK FRONT FOG LAMP OUTPUT VOLTAGE
CONSULT-III ACTIVE TEST
1. Disconnect front fog lamp connector.
2. Turn ignition switch ON.
3. Select “EXTERNAL LAMPS” of IPDM E/R active test item.
4. With operating the test items, check vo ltage between IPDM E/R harness connector and ground.
Fog : Front fog lamp ON
Off : Front fog lamp OFF
Unit Location Fuse No. Capacity
Front fog lamp IPDM E/R #50 15 A
IPDM E/R
GroundContinuity
Connector Terminal
RH E1219
Not existed
LH 20
Revision: 2010 May2011 QX56