2011 INFINITI QX56 headlamp

EXL-66
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2503, B2504 SWIVEL ACTUATOR
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 8.
7.CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.
3. Check continuity between AFS control unit har ness connector and headlamp swivel actuator harness
connector.
4. Check continuity between AFS control unit harness connector and ground.
Is the inspection result normal?
YES >> Replace front combination lamp.
NO >> Repair or replace harnesses.
8.CHECK SWIVEL POSITION SE NSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector.
3. Check continuity between AFS control unit har ness connector and headlamp swivel actuator harness
connector.
4. 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 harnesses.
9.CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT VOLTAGE OUTPUT
Check voltage between AFS control unit harness connector and ground.
AFS control unit Headlamp swivel actuator Continuity
Connector Terminal Connector Terminal
RH M135 9E123
1 Existed
LH 29 E122
AFS control unit GroundContinuity
Connector Terminal
RH M135 9
Not existed
LH 29
AFS control unit Headlamp swivel actuator Continuity
Connector Terminal Connector Terminal
RH M135 4E123
2 Existed
LH 24 E122
AFS control unit GroundContinuity
Connector Terminal
RH M135 4
Not existed
LH 24
(+)
(− ) Vo l ta g e
(Approx.)
AFS control unit
Connector Terminal
RH M135 2
Ground 0 V
LH 27
Revision: 2010 May2011 QX56

B2503, B2504 SWIVEL ACTUATOREXL-67
< 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 >> GO TO 10.
NO >> Replace AFS control unit. Refer to EXL-135, "
Removal and Installation"
10.CHECK SWIVEL POSITION SENSOR GROUND OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AFS control unit connector and headlamp swivel actuator connector.
3. Check continuity between AFS control unit har ness connector and headlamp swivel actuator harness
connector.
Is the inspection result normal?
YES >> Replace front combination lamp.
NO >> Repair or replace harnesses.
Component InspectionINFOID:0000000006213931
1.CHECK SWIVEL MOTOR SINGLE PART
1. Disconnect swivel actuator connector.
2. Check resistance among each swivel actuator connector terminals.
Is the inspection result normal?
YES >> Swivel actuator is normal.
NO >> Replace front combination lamp.
AFS control unit Headlamp swivel actuator Continuity
Connector Terminal Connector Terminal
RH M135 2E123
6 Existed
LH 27 E122
Swivel actuator Resistance
(Approx.)
Te r m i n a l Te r m i n a l
37 7.2 Ω
48
3410 M Ω or more
Revision: 2010 May2011 QX56

EXL-68
< DTC/CIRCUIT DIAGNOSIS >[XENON TYPE]
B2513 HEIGHT SENSOR UNUSUAL [FR]
B2513 HEIGHT SENSOR UNUSUAL [FR]
DTC LogicINFOID:0000000006213932
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Start the engine.
2. Turn the headlamp ON.
3. Select the self-diagnosis with CONSULT-III.
4. Check the self-diagnosis result. Refer to EXL-39, "
DTC Index".
Is DTC
“B2513” detected?
YES >> Refer to EXL-68, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006213933
1.CHECK HEIGHT SENSOR SIGNAL INPUT
1. Turn ignition switch ON.
2. Check voltage between AFS control unit harness connector and ground.
Is the measurement value within the standard value?
YES >> Replace AFS control unit. Refer to EXL-135, "Removal and Installation"
Less than the standard value >>GO TO 2.
Higher than the standard value>>GO TO 5.
2.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT INPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect front height sensor connector.
3. Turn ignition switch ON.
4. Check voltage between front height sensor harness connector and ground.
DTC No. Trouble diagnosis name DTC detection condition Possible cause
B2513 Height sensor unusual [FR] An applicable DTC is indicated when any of the
following conditions is detected continuously
for 2 seconds or more.
 The front height sensor power supply is 6 V
or more, or 4 V or less.
 The front height sensor signal is 0.25 V or less, or 4.75 V or more. Front height sensor
 Front height sensor
 Harness and connector
 AFS control unit
(+)
(− ) Vo l ta g e
(Approx.)
AFS control unit
Connector Terminal M135 23 Ground 0.25 - 4.75 V
(+) (− ) Vo l ta g e
(Approx.)
Front height sensor
Connector Terminal E208 1 Ground 5 V
Revision: 2010 May2011 QX56

B2514 HEIGHT SENSOR UNUSUAL [RR]EXL-71
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
B2514 HEIGHT SENSOR UNUSUAL [RR]
DTC LogicINFOID:0000000006213934
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.DTC ERASE
Erase the DTC memory of AFS with CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Start the engine.
2. Turn the headlamp ON.
3. Select the self-diagnos is with CONSULT-III.
4. Check the self-diagnosis result. Refer to EXL-39, "
DTC Index".
Is DTC
“B2514” detected?
YES >> Refer to EXL-71, "Diagnosis Procedure".
NO >> Refer to GI-40, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000006213935
1.CHECK HEIGHT SENSOR SIGNAL INPUT
1. Turn ignition switch ON.
2. Check voltage between AFS cont rol unit harness connector and ground.
Is the measurement value within the standard value?
YES >> Replace AFS control unit. Refer to EXL-135, "Removal and Installation"
Less than the standard value >>GO TO 2.
Higher than the standard value>>GO TO 5.
2.CHECK HEIGHT SENSOR POWER SUPPLY CIRCUIT INPUT VOLTAGE
1. Turn ignition switch OFF.
2. Disconnect rear height sensor connector.
3. Turn ignition switch ON.
4. Check voltage between rear height sensor harness connector and ground.
DTC No. Trouble diagnosis name DTC detection condition Possible cause
B2514 Height sensor unusual [RR] An applicable DTC is indicated when any of the fol-
lowing conditions is detected continuously for 2
seconds or more.
 The rear height sensor power supply is 6 V or
more, or 4 V or less.
 The rear height sensor signal is 0.25 V or less, or 4.75 V or more. Rear height sensor
 Rear height sensor
 Harness and connector
 AFS control unit
(+)
(− ) Vol tag e
(Approx.)
AFS control unit
Connector Terminal M135 28 Ground 0.25 - 4.75 V
(+) (− ) Vol tag e
(Approx.)
Rear height sensor
Connector Terminal C15 1 Ground 5 V
Revision: 2010 May2011 QX56

EXTERIOR LAMP FUSEEXL-85
< DTC/CIRCUIT DIAGNOSIS > [XENON TYPE]
C
D
E
F
G H
I
J
K
M A
B
EXL
N
O P
EXTERIOR LAMP FUSE
Diagnosis ProcedureINFOID:0000000006213954
1.CHECK FUSE
Check that the following fuses are not fusing.
Is the inspection result normal?
YES >> The fuse is normal.
NO >> Repair the applicable circuit. And then replace the fuse.
Unit Location Fuse No. Capacity
Headlamp HI (LH) IPDM E/R #52 10 A
Headlamp HI (RH) IPDM E/R #51 10 A
Headlamp LO (LH) IPDM E/R #53 15 A
Headlamp LO (RH) IPDM E/R #54 15 A
Front fog lamp IPDM E/R #50 15 A
Parking lamp (LH)
 Front side marker lamp (LH) IPDM E/R #46 10 A
 Parking lamp (RH)
 Front side marker lamp (RH) IPDM E/R #47 10 A
 Tail lamp (Back door side LH/RH)
 Tail lamp (Body side LH)
 License plate lamp
 Rear side mark er lamp (LH) IPDM E/R #46 10 A
 Tail lamp (Body side RH)
 Rear side mark er lamp (RH) IPDM E/R #47 10 A
Stop lamp FUSE BLOCK (J/B) #7 10 A
Back-up lamp IPDM E/R #55 10 A
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