2009 INFINITI QX56 Factory Service Manual

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Page 1977 of 4171

INFINITI QX56 2009 Factory Service Manual DIAGNOSIS SYSTEM (IPDM E/R)EXL-29
< FUNCTION DIAGNOSIS >
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EXL
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EXTERNAL LAMPS OFF
OFF
TAIL Operates the tail lamp relay.
LO Operates the headlamp low relay.
HI Operates the

Page 1978 of 4171

INFINITI QX56 2009 Factory Service Manual EXL-30
< COMPONENT DIAGNOSIS >
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:00000

Page 1979 of 4171

INFINITI QX56 2009 Factory Service Manual POWER SUPPLY AND GROUND CIRCUITEXL-31
< COMPONENT DIAGNOSIS >
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IPDM E/R (INTELLIGENT POWER DIST RIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MO

Page 1980 of 4171

INFINITI QX56 2009 Factory Service Manual EXL-32
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
DescriptionINFOID:0000000005867521
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp LH

EXL-32
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
DescriptionINFOID:0000000005867521
The IPDM E/R (intelligent power distribution module engine room) controls the headlamp LH high and head-
lamp RH high relays based on inputs from the BCM via the CAN communication lines. When the headlamp LH
high and headlamp RH high relays are energized, power flows through fuse\
s 34 and 35, located in the IPDM
E/R. Power then flows to the front combination lamps to the headlamp high beam.
Component Function CheckINFOID:0000000003776179
1.CHECK HEADLAMP (HI) OPERATION
WITHOUT CONTULT-III
1. Start IPDM E/R auto active test. Refer to PCS-12, "
Diagnosis Description".
2. Check that the headlamp switches to the high beam. NOTE:
HI/LO is repeated 1 second each when usi ng the IPDM E/R auto active test.
CONSULT-III
1. Select "EXTERNAL LAMP" of IPDM E/R active test item.
2. With the test item operating, check that the headlamp switches to high beam.
Does the headlamp switch to high beam?
YES >> Headlamp (HI) circuit is normal.
NO >> Refer to EXL-32, "
Diagnosis Procedure - Without Daytime Light System", EXL-33, "Diagnosis
Procedure - With Daytime Light System".
Diagnosis Procedure - Wit hout Daytime Light SystemINFOID:0000000003776180
1.CHECK HEADLAMP (HI) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
Is the fuse open?
YES >> Repair the harness and replace the fuse.
NO >> GO TO 2.
2.CHECK HEADLAMP (HI) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector E11 or E107.
3. Turn the ignition switch ON.
4. Turn the high beam headlamps ON.
5. With the high beam headlamps ON, check the voltage between the combination lamp connector and ground.
Are the voltage readings as specified?
YES >> GO TO 4. HI : Headlamp switches to the high beam.
OFF : Headlamp OFF
Unit
LocationFuse No.Capacity
Headlamp HI (LH) IPDM E/R3510A
Headlamp HI (RH) IPDM E/R3410A
(+)
(−)Voltage
Connector Terminal
LH E11 6 GroundBattery voltage
RH E107 6
ALLIA0852ZZ
Revision: December 20092009 QX56

Page 1981 of 4171

INFINITI QX56 2009 Factory Service Manual HEADLAMP (HI) CIRCUITEXL-33
< COMPONENT DIAGNOSIS >
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NO >> GO TO 3.
3.CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R conne

Page 1982 of 4171

INFINITI QX56 2009 Factory Service Manual EXL-34
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
Are the voltage readings as specified?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Di

Page 1983 of 4171

INFINITI QX56 2009 Factory Service Manual HEADLAMP (LO) CIRCUITEXL-35
< COMPONENT DIAGNOSIS >
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HEADLAMP (LO) CIRCUIT
DescriptionINFOID:0000000003776181
The IPDM E/R (intelligent power distribution modul e engin

Page 1984 of 4171

INFINITI QX56 2009 Factory Service Manual EXL-36
< COMPONENT DIAGNOSIS >
HEADLAMP (LO) CIRCUIT
NO >> GO TO 3.
3.CHECK HEADLAMP (LO) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity betwee

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