Head lamp INFINITI QX56 2011 Factory Service Manual

DIAGNOSIS SYSTEM (IPDM E/R)WW-19
< SYSTEM DESCRIPTION >
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Concept of auto active test
 IPDM E/R starts the auto active test with the door
switch signals transmitted by BCM via CAN communica-
tion. Therefore, the CAN communication line between IPDM E/R and BCM is considered normal if the auto
active test starts successfully.
 The auto active test facilitates troubleshooting if any systems controlled by IPDM E/R cannot be operated.
Diagnosis chart in auto active test
5 Headlamp LO for 10 seconds →HI ON ⇔ OFF 5 times
6 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
Operation
sequence Inspection location Operation
JMMIA0492GB
Symptom Inspection contents Possible cause
Rear window defogger does not operate Perform auto active test.
Does the rear window defog-
ger operate?YES BCM signal input circuit
NO  Rear window defogger
 Rear window defogger
ground circuit
 Harness or connector be- tween IPDM E/R and rear
window defogger
 IPDM E/R
Any of the following components do not operate
Parking lamp
 License plate lamp
Tail lamp
 Side marker lamp
 Front fog lamp
 Headlamp (HI, LO)
 Front wiper (HI, LO) Perform auto active test.
Does the applicable system
operate?YES BCM signal input circuit
NO  Lamp or motor
 Lamp or motor ground cir-
cuit
 Harness or connector be- tween IPDM E/R and appli-
cable system
 IPDM E/R
A/C compressor does not operate Perform auto active test.
Does the magnet clutch oper-
ate?YES
 A/C auto amp. signal input
circuit
 CAN communication signal
between A/C auto amp. and
ECM
 CAN communication signal
between ECM and IPDM E/
R
NO  Magnet clutch
 Harness or connector be-
tween IPDM E/R and mag-
net clutch
 IPDM E/R
Revision: 2010 May2011 QX56

DIAGNOSIS SYSTEM (IPDM E/R)WW-21
< SYSTEM DESCRIPTION >
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ACTIVE TEST
Te s t i t e m
PUSH SW
[Off/On] Displays the status of the push-button ignition switch judged by IPDM E/R.
INTER/NP SW
[Off/On] Displays the status of the shift position judged by IPDM E/R.
ST RLY CONT
[Off/On] Displays the status of the starter relay status signal received from BCM via CAN
communication.
IHBT RLY -REQ
[Off/On] Displays the status of the starter control relay signal received from BCM via CAN
communication.
ST/INHI RLY
[Off/ ST ON/INHI ON/UNKWN] Displays the status of the starter relay and starter control relay judged by IPDM
E/R.
DETENT SW
[Off/On] Displays the status of the A/T shift selector (detention switch) judged by IPDM E/
R.
S/L RLY -REQ
[Off/On] Displays the status of the steering lock relay signal received from BCM via CAN
communication.
S/L STATE
[LOCK/UNLK/UNKWN] Displays the status of the steering lock judged by IPDM E/R.
OIL P SW
[Open/Close] Displays the status of the oil pressure switch judged by IPDM E/R.
HOOD SW
[Off/On] Displays the status of the hood switch judged by IPDM E/R.
HL WASHER REQ
[Off/On] Displays the status of the headlamp washer request signal received from BCM via
CAN communication.
THFT HRN REQ
[Off/On] Displays the status of the theft warning horn request signal received from BCM
via CAN communication.
HORN CHIRP
[Off/On] Displays the status of the horn reminder signal received from BCM via CAN com-
munication.
Monitor Item
[Unit] MAIN SIG-
NALS Description
Test item Operation Description
CORNERING LAMP LH
NOTE:
This item is indicated, but cannot be tested.
RH
HORN On Operates horn relay for 20 ms.
REAR DEFOGGER Off OFF
On Operates the rear window defogger relay.
FRONT WIPER Off OFF
Lo Operates the front wiper relay.
Hi Operates the front wiper relay and front wiper high relay.
MOTOR FAN* 1OFF
2 Transmits 50% pulse duty signal (PWM signal) to the cooling fan control module.
3 Transmits 75% pulse duty signal (PWM signal) to the cooling fan control module.
4
Transmits 100% pulse duty signal (PWM signal) to the cooling fan control mod-
ule.
HEAD LAMP WASHER On Operates the headlamp washer relay for 1 second.
Revision: 2010 May2011 QX56

WW-22
< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (IPDM E/R)
*: Operates while the engine is running.EXTERNAL LAMPS
Off OFF
TAIL Operates the tail lamp relay.
Lo Operates the headlamp low relay.
Hi
Operates the headlamp low relay and ON/OFF the headlamp high relay at 1 sec-
ond intervals.
Fog Operates the front fog lamp relay.
Test item Operation Description
Revision: 2010 May2011 QX56

WIPER AND WASHER FUSEWW-35
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
WIPER AND WASHER FUSE
Diagnosis ProcedureINFOID:0000000006300467
1.CHECK FUSES
Check that the following fuses is not fusing.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace the fuse with a new one after repairing the applicable circuit.
Unit Location No. Capacity
Front wiper motor IPDM E/R 45 30 A
Headlamp washer relay - U 30 A
Washer pump Fuse block (J/B) 1 10 A
Revision: 2010 May2011 QX56

WW-46
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP WASHER RELAY
HEADLAMP WASHER RELAY
Component InspectionINFOID:0000000006371494
1.CHECK HEADLAMP WASHER RELAY
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Apply battery voltage to headlamp washer relay between terminals 1 and 2.
4. Check continuity of headlamp washer relay.
Does continuity exist?
YES >> Headlamp washer relay is normal.
NO >> Replace headlamp washer relay.
Headlamp washer relay Condition Continuity
Terminal Voltage
35 Apply Existed
Not Apply Not existed
Revision: 2010 May2011 QX56

HEADLAMP WASHER CIRCUITWW-47
< DTC/CIRCUIT DIAGNOSIS >
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HEADLAMP WASHER CIRCUIT
Component Function CheckINFOID:0000000006371495
1.CHECK HEADLAMP WASHER OPERATION
CONSULT-III ACTIVE TEST
1. Select “HEAD LAMP WASHER” of IPDM E/R active test item.
2. With operating the test item, check headlamp operation.
Is headlamp washer operation normally?
YES >> Headlamp washer circuit is normal.
NO >> Refer to WW-47, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000006371496
1.CHECK HEADLAMP WASHER FUSIBLE LINK
1. Turn the ignition switch OFF.
2. Check that the headlamp washer 30A fusible link (#U) is not fusing.
Is the fusible link fusing?
YES >> Replace the fusible link after repairing the applicable circuit.
NO >> GO TO 2.
2.CHECK HEADLAMP WASHER RELAY POWER SUPPLY
1. Remove headlamp washer relay.
2. Check voltage between headlamp washer relay harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harnesses or connectors.
3.CHECK HEADLAMP WASHER RELAY
Check headlamp washer relay. Refer to WW-46, "
Component Inspection".
Is the headlamp washer relay normal?
YES >> GO TO 4.
NO >> Replace headlamp washer relay.
4.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL
CONSULT-III ACTIVE TEST
1. Turn the ignition switch OFF.
2. Install headlamp washer relay.
3. Turn the ignition switch ON.
4. Select “HEAD LAMP WASHER” of IPDM E/R active test item.
5. With operating the test item, check vo ltage between IPDM E/R harness connector and ground.
On :Headlamp washer ON operation
Off :Stop the headlamp washer.
(+)
(− ) Voltage (Approx.)
Headlamp washer relay
Connector Terminal
E51 1
Ground Battery voltage
3
(+)
(− ) Te s t i t e m
Voltage (Approx.)
IPDM E/R
HEAD LAMP WASHER
Connector Terminal
Revision: 2010 May2011 QX56

WW-48
< DTC/CIRCUIT DIAGNOSIS >
HEADLAMP WASHER CIRCUIT
Is the measurement value normal?
YES >> GO TO 7.
Fixed at 0 V >> GO TO 5.
Fixed at battery voltage >>Replace IPDM E/R.
5.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect IPDM E/R harness connector.
4. Check continuity between IPDM E/R harness c onnector and headlamp washer relay harness connector.
Does continuity exist?
YES >> GO TO 6.
NO >> Repair the harnesses or connectors.
6.CHECK HEADLAMP WASHER RELAY CONTROL SIGNAL SHORT CIRCUIT
Check continuity between IPDM E/R harness connector and ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> Replace IPDM E/R.
7.CHECK HEADLAMP WASHER PUMP OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Remove headlamp washer relay.
3. Disconnect headlamp washer pump connector.
4. Check continuity between headlamp washer re lay harness connector and headlamp washer pump har-
ness connector.
Does continuity exist?
YES >> GO TO 8.
NO >> Repair the harnesses or connectors.
8.CHECK HEADLAMP WASHER PUMP (GND) OPEN CIRCUIT
Check continuity headlamp washer pump harness connector and ground.
Does continuity exist?
YES >> Replace headlamp washer pump.
NO >> Repair the harnesses or connectors.
E12 21 Ground On 0 V
Off Battery voltage
IPDM E/R Headlamp washer relay Continuity
Connector Terminal Connector Terminal
E12 21 E51 2 Existed
IPDM E/R GroundContinuity
Connector Terminal
E12 21 Not existed
Headlamp washer relay Headlamp washer pump Continuity
Connector Terminal Connector Terminal
E51 5 E41 1 Existed
Headlamp washer pump GroundContinuity
Connector Terminal
E41 2 Existed
Revision: 2010 May2011 QX56

WIPER AND WASHER SYSTEM SYMPTOMSWW-51
< SYMPTOM DIAGNOSIS >
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Rear wiper does not
stop ON only
 Combination switch
BCM Rear wiper motor circuit
Refer to
WW-43, "
Compo-
nent Function Check".
INT only  Combination switch
BCM Combination switch
Refer to
BCS-80, "
Symptom
Ta b l e"
Rear wiper does not
operate normally Wiper is not linked to
the washer operation.
 Combination switch
 Harness between rear wiper motor and BCM
BCM
Combination switch
Refer to
BCS-80, "
Symptom
Ta b l e"
BCM —
Rear wiper does not
return to the stop posi-
tion. [Stops after a five-
second operation.
(Fail-safe)] BCM
 Harness between rear wiper motor and BCM
 Rear wiper motor
Rear wiper auto stop signal
circuit
Refer to
WW-45, "
Compo-
nent Function Check"
Rear wiper does not
operate even when
shift lever is shifted to
the “R”. Check the linked with reverse rear wiper setting.
Refer to
WW-15, "WIPER : CONSULT-III Function (BCM - WIPER)".
NOTE:
Factory setting of the rear wiper operation is operation linked with reverse.
Shift position signal (CAN communication)
BCM
TCM TCM DATA MONITOR
″
SLCT LVR POSI ″
Headlamp washer
does not operate. Headlamp washer
does not operate with
the front washer when
headlamps are turned
ON.  Combination switch
 Harness between combination switch and BCM
BCM
Combination switch
Refer to
BCS-80, "
Symptom
Ta b l e"
 Fusible link
 Harness between fusible link and headlamp
washer relay
 Headlamp washer relay
 Harness between haedlamp washer relay and IPDM E/R
 IPDM E/R
 Harness between haedlamp washer relay and headlamp washer pump
 headlamp washer pump
 Harness between haedlamp washer pump and ground Headlamp washer circuit
Refer to
WW-47, "
Compo-
nent Function Check"
BCM —
Symptom Probable malfunction location Inspection item
Revision: 2010 May2011 QX56

HEADLAMP WASHER NOZZLE AND TUBEWW-55
< REMOVAL AND INSTALLATION >
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REMOVAL AND INSTALLATION
HEADLAMP WASHER NOZZLE AND TUBE
Exploded ViewINFOID:0000000006220393
Hydraulic LayoutINFOID:0000000006220394
1. Headlamp washer nozzle cover 2. Headlamp washer nozzle assembly 3. Headlamp washer nozzle retainer
4. Headlamp washer nozzle bracket 5. Front bumper fascia : Pawl
JMLIA1096ZZ
1. Headlamp washer nozzle assembly LH 2. Headlamp washer tube 3. Headlamp washer tube (tank side)
4. Headlamp washer nozzle assembly RH 5. Front bumper fascia
A. Metal clip
JMLIA1097ZZ
Revision: 2010 May2011 QX56

WW-56
< REMOVAL AND INSTALLATION >
HEADLAMP WASHER NOZZLE AND TUBE
Removal and Installation
INFOID:0000000006220395
REMOVAL
1. Pull out headlamp washer nozzle from bumper fascia, disen- gage pawl (A), and then remove headlamp washer nozzle cover
(1).
2. Remove front bumper fascia. Refer to EXT-13, "
Removal and Installation".
3. Disconnect headlamp washer tube joint.
4. Remove headlamp washer nozzle retainer.
5. Remove headlamp washer nozzle bracket.
6. Remove headlamp washer nozzle from the front bumper fascia.
INSTALLATION
Install in the reverse order of removal.
InspectionINFOID:0000000006220396
HEADLAMP WASHER NOZZLE SPRAY POSITION INSPECTION
CAUTION:
Replace headlamp washer nozzle assembly with a new pa rt if headlamp washer jet position is outside
the headlamp illumination area shown in the figure.
 Check that headlamp washer injection is certainly on headlamp
illumination area.
 Check the headlamp washer injection range as shown in the fig- ure.
JPLIA1030ZZ
JMLIA1098ZZ
a : 67.8 mm (2.31 in)
B : 83.2 mm (3.04 in)
C : 316.2 mm (12.13 in)
JMLIA1099ZZ
Revision: 2010 May2011 QX56