2011 INFINITI QX56 headlamp

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< SYSTEM DESCRIPTION >
DIAGNOSIS SYSTEM (IPDM E/R)
DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000006349814
AUTO ACTIVE TEST
Description
In auto active test, the IPDM E/R sends a drive signal to the following systems to check their operation.
 Oil pressure warning lamp
 Rear window defogger
 Front wiper (LO, HI)
 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp
 Headlamp (LO, HI)
 A/C compressor (magnet clutch)
Operation Procedure
CAUTION:
Never perform auto active test in the following conditions.
 Engine is running.
 CONSULT-III is connected.
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn the ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, pr ess the driver door switch 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close passenger door.
4. Turn the ignition switch ON within 10 seconds. Af ter that the horn sounds once and the auto active test
starts.
CAUTION:
Engine starts when igniti on switch is turned ON while brake pedal is depressed.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
 When auto active test has to be cancelled halfway through test, turn the ignition switch OFF.
 When auto active test is not activated, door swit ch may be the cause. Check door switch. Refer to DLK-117,
"ComponentFunctionCheck".
Inspection in Auto Active Test
When auto active test is actuated, the following operation sequence is repeated 3 times.
Operation
sequence Inspection location Operation
1 Oil pressure warning lamp Blinks continuously during operation of auto active test
2 Rear window defogger 10 seconds
3 Front wiper LO for 5 seconds → HI for 5 seconds
4 Parking lamp
 License plate lamp
 Tail lamp
 Side marker lamp
 Front fog lamp 10 seconds
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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
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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.
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< 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
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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
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< 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
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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
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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