2006 INFINITI QX56 headlamp

HEADLAMP (FOR USA)LT-23
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Revision: November 2009 2006 QX56
Headlamp HI Does Not Illuminate (One Side)EKS00B84
1. BULB INSPECTION
Inspect inoperative headlamp bulb.
OK or NG
OK >> GO TO 2.
NG >> Replace headlamp bulb. Refer to LT- 3 1 , "
HEADLAMP (INNER SIDE), FOR HIGH BEAM" .
2. CHECK POWER TO HEADLAMP
1. Disconnect inoperative front combination lamp connector.
2. Turn the high beam headlamps ON.
3. Check voltage between inoperative front combination lamp ter- minal and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
3. CHECK HEADLAMP GROUND
1. Turn the high beam headlamps OFF.
2. Check continuity between inoperative front combination lamp connector and ground.
OK or NG
OK >> Check front combination lamp connector for damage or poor connection. Repair as necessary.
NG >> Repair open circuit in harness between inoperative front combination lamp and ground.
Terminals
(– ) Voltage
(Approx.)
(+)
Connector Terminal
RH E107 6Ground Battery voltage
LH E11
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Terminals Continuity
Connector Terminal
RH E107 2Ground Yes
LH E11
WKIA1854E

LT-24
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
4. INSPECTION BETWEEN IPDM E/R AND HEADLAMPS
1. Disconnect IPDM E/R connector and inoperative front combination lamp connector.
2. Check continuity between harness connector terminal of IPDM E/R and harness connector terminal of inoperative front combi-
nation lamp.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
NG >> Check for short and open circuits in harness between IPDM E/R and headlamps. Repair as nec- essary.
High Beam Indicator Lamp Does Not IlluminateEKS00B85
1. BULB INSPECTION
Inspect CAN communication system. Refer to LAN-26, "
CAN COMMUNICATION" .
OK or NG
OK >> Replace combination meter. Refer to IP-13, "COMBINATION METER" .
NG >> Repair as necessary.
Headlamp LO Does Not Illuminate (Both Sides)EKS00B86
1. CHECK COMBINATION SWITCH INPUT SIGNAL
Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor,
make sure "HEAD LAMP SW 1" and "HEAD LAMP SW 2" turns ON-
OFF linked with operation of lighting switch.
OK or NG
OK >> GO TO 2.
NG >> Check lighting switch. Refer to LT- 1 0 3 , "
Combination
Switch Inspection" .
2. HEADLAMP ACTIVE TEST
1. Select "IPDM E/R" on CONSULT-II, and select "ACTIVE TEST" on "SELECT DIAG MODE" screen.
2. Select "EXTERNAL LAMPS" on "SELECT TEST ITEM" screen.
3. Touch "LO" on "ACTIVE TEST" screen.
4. Make sure headlamp low beam operates.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
IPDM E/R Front combination lamp Continuity
Connector Terminal Connector Terminal
E123 56 RH E107
6Yes
55 LH E11
WKIA1853E
When lighting switch is in
2ND position : HEAD LAMP SW 1 ON
: HEAD LAMP SW 2 ON
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Headlamp low beam should operate.
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HEADLAMP (FOR USA)LT-25
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Revision: November 2009 2006 QX56
3. CHECK IPDM E/R
1. Select "IPDM E/R" on CONSULT-II, and select "DATA MONI- TOR" on "SELECT DIAG MODE" screen.
2. Make sure "HL LO REQ" turns ON when lighting switch is in 2ND position.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
NG >> Replace BCM. Refer to BCS-20, "
BCM" .
4. CHECK HEADLAMP INPUT SIGNAL
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH and LH connector.
3. Turn ignition switch ON.
4. Select "IPDM E/R" on CONSULT-II, and select "ACTIVE TEST" on "SELECT DIAG MODE" screen.
5. Select "EXTERNAL LAMPS" on "SELECT TEST ITEM" screen.
6. Touch "LO" on "ACTIVE TEST" screen.
7. When headlamp low beam is operating, check voltage between front combination lamp RH and LH harness connector and
ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. CHECK HEADLAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector E123 terminal 54 and front combination lamp RH harness connector
E107 terminal 5.
4. Check continuity between IPDM E/R harness connector E123 terminal 52 and front combination lamp LH harness connector
E11 terminal 5.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and Installation of IPDM E/R" .
NG >> Repair harness or connector. When lighting switch is in
2ND position
: HL LO REQ ON
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(+)
(– ) Voltage
Connector Terminal
RH E107 5Ground Battery voltage
LH E11
WKIA1855E
54 - 5 : Continuity should exist.
52 - 5 : Continuity should exist.
WKIA1856E

LT-26
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
6. CHECK HEADLAMP GROUND
1. Turn ignition switch OFF.
2. Check continuity between front combination lamp RH harness connector E107 terminal 1 and ground.
3. Check continuity between front combination lamp LH harness connector E11 terminal 1 and ground.
OK or NG
OK >> Check front combination lamp connector for damage or poor connection, ballasts (HID control unit) and xenon
bulbs. Repair as necessary.
NG >> Repair harness or connector.
Headlamp LO Does Not Illuminate (One Side)EKS00B87
1. BULB INSPECTION
Inspect ballasts (HID control unit) and xenon bulb of inoperative headlamp bulb.
OK or NG
OK >> GO TO 2.
NG >>

(step1) Replace xenon bulb with other side bulb or new one. (If lamp illuminates correctly,
replace the xenon bulb).

(step2) Replace ballast (HID control unit) with other side ballast or new one. (If lamp illuminates
correctly, replace the ballast).
2. CHECK POWER TO HEADLAMP
1. Disconnect inoperative front combination lamp connector.
2. Turn the low beam headlamps ON.
3. Check voltage between inoperative front combination lamp con- nector terminal and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4. 1 - Ground
: Continuity should exist.
1 - Ground : Continuity should exist.
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(+)
(– ) Voltage
(Approx.)
Connector Terminal
RH E107 5Ground Battery voltage
LH E11
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HEADLAMP (FOR USA)LT-27
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Revision: November 2009 2006 QX56
3. CHECK HEADLAMP GROUND
1. Turn the low beam headlamps OFF.
2. Check continuity between inoperative front combination lamp connector terminal and ground.
OK or NG
OK >> Check front combination lamp and IPDM E/R connector. Repair as necessary.
NG >> Repair open circuit in harness between inoperative front combination lamp and ground.
4. INSPECTION BETWEEN IPDM E/R AND HEADLAMPS
1. Disconnect IPDM E/R connector.
2. Check continuity between harness connector terminals of IPDM E/R and harness connector terminals of inoperative front combi-
nation lamp.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
NG >> Check for short circuits and open circuits in harness between IPDM E/R and front combination lamps. Repair as necessary.
Headlamps Do Not Turn OFFEKS00B88
1. CHECK COMBINATION SWITCH INPUT SIGNAL
Select "BCM" on CONSULT-II. With "HEAD LAMP" data monitor,
make sure "HEAD LAMP SW 1" and "HEAD LAMP SW 2" turns ON-
OFF linked with operation of lighting switch.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
NG >> GO TO 2.
2. CHECK LIGHTING SWITCH
Check lighting switch. Refer to LT- 1 0 3 , "
Combination Switch Inspection" .
OK or NG
OK >> GO TO 3.
NG >> Replace lighting switch. Refer to LT- 1 0 5 , "
Removal and Installation" .
Connector Terminal Continuity
RH E107 1Ground Yes
LH E11
WKIA1857E
IPDM E/R Front combination lamp
Continuity
Connector Terminal Connector Terminal
(Wire color)
E123 54 RH E107
5Yes
52 LH E11
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When lighting switch is in
OFF position : HEAD LAMP SW 1 OFF
: HEAD LAMP SW 2 OFF
SKIA5200E

LT-28
HEADLAMP (FOR USA)
Revision: November 20092006 QX56
3. CHECKING CAN COMMUNICATIONS BETWEEN BCM AND IPDM E/R
Select "BCM" on CONSULT-II and perform self-diagnosis for BCM.
Display of self-diagnosis results
NO DTC>> Replace IPDM E/R. Refer to PG-30, "Removal and
Installation of IPDM E/R" .
CAN COMM CIRCUIT>> Refer to BCS-13, "
CAN Communication
Inspection Using CONSULT-II (Self-Diagnosis)" .
SKIA1039E

HEADLAMP (FOR USA)LT-29
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Revision: November 2009 2006 QX56
Aiming AdjustmentEKS00B89
For details, refer to the regulations in your area.
NOTE:
If vehicle front body has been repaired and /or the headlamp assembly has been replaced, check headlamp
aiming.
HEADLAMP AIMING
NOTE:

Before performing aiming adjustment, check the following:
–Confirm headlamp aiming switch is set to "0" (zero) position.
–Ensure all tires are inflated to correct pressure.
–Place vehicle and screen on level surface.
–Ensure there is no load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant and engine oil filled to correct level, and fuel tank full.
–Confirm spare tire, jack and tools are properly stowed.
–Aim each headlamp individually and ensure other headlamp beam pattern is blocked from screen.
–Use adjusting screw to perform aiming adjustment
WKIA1859E

LT-30
HEADLAMP (FOR USA)
Revision: November 20092006 QX56

Basic illuminating area for adjustment should be within the range shown on the aiming chart.
Adjust headlamps accordingly.
Bulb Replacement EKS00B8A
CAUTION:

Disconnect battery negative terminal before touching xenon bulb or headlamp wiring harness
assembly.

Turn headlamp switch OFF before disconnecting headlamp harness connector.

Do not touch bulb by hand right after being turned off. Burning may result.

Do not touch the glass of bulb directly by hand. Keep grease and other oily substances away from
it.

Do not turn xenon bulb ON when xenon bulb is removed from front combination lamp assembly.

After installing the bulb, be sure to install the bulb socket securely to ensure watertightness.

Do not leave bulb out of front combination lamp assembly for a long time because dust, moisture,
smoke, etc. may affect the performance of the lamp. When replacing bulb, be sure to replace it
with a new one.
HEADLAMP (OUTER SIDE), FOR LOW BEAM
Removal
1. Position fender protector aside.
2. Turn headlamp switch OFF.
3. Disconnect battery negative terminal.
4. Remove ballast.
5. Disconnect headlamp electrical connector.
6. Release bulb retaining spring and pull bulb straight out.
Installation
Installation is in the reverse order of removal.
WKIA3613E