2010 INFINITI QX56 low beam
[x] Cancel search: low beamPage 1996 of 4210
EXL-20
< FUNCTION DIAGNOSIS >
DIAGNOSIS SYSTEM (BCM)
FLASHER
FLASHER : CONSULT-III Function (BCM - FLASHER)INFOID:0000000005369884
DATA MONITOR
ACTIVE TEST
COMB SW
COMB SW : CONSULT-III Function (BCM - COMB SW)INFOID:0000000005369885
DATA MONITOR
Test ItemOperation Description
TA I L L A M P ON
Transmits the position light reques
t signal to IPDM E/R with CAN com-
munication to turn the tail lamp ON.
OFF Stops the tail lamp request signal transmission.
HEAD LAMP HI
Transmits the high beam request signal with CAN communication to turn
the headlamp (HI).
LO Transmits the low beam request signal with CAN communication to turn
the headlamp (LO).
OFF Stops the high & low beam request signal transmission.
FR FOG LAMP ON
Transmits the front fog lights request signal to IPDM E/R with CAN com-
munication to turn the front fog lamp ON.
OFF Stops the front fog lights request signal transmission.
CARGO LAMP ON
Transmits the cargo lamp request signal with CAN communication to
turn the lamp ON.
OFF Stops the cargo lamp request signal transmission.
CORNERING LAMP LH
Transmits the LH cornering lamp request signal with CAN communica-
tion to turn the lamp ON.
RH Transmits the RH cornering lamp request signal with CAN communica-
tion to turn the lamp ON.
OFF Stops the day time running light request signal transmission.
Monitor Item [Unit] Description
IGN ON SW [ON/OFF] Ignition switch (ON) status judged from IGN signal (ignition power supply)
HAZARD SW [ON/OFF] The switch status input from the hazard switch
TURN SIGNAL R [ON/OFF] Each switch condition that BCM judges from the combination switch reading function
TURN SIGNAL L [ON/OFF]
BRAKE SW [ON/OFF] The switch status input from the brake switch
Test ItemOperation Description
FLASHER RH Outputs the voltage to turn the right side turn signal lamps ON.
LH Outputs the voltage to turn the left side turn signal lamps ON.
OFF Stops the voltage to turn the turn signal lamps OFF.
Revision: April 20092010 QX56
Page 1997 of 4210
![INFINITI QX56 2010 Factory Service Manual DIAGNOSIS SYSTEM (BCM)EXL-21
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
Monitor Item [Unit] Description
TURN SIGNAL R
[OFF/ON] Displays the status of the TURN RH switch in combination sw](/manual-img/42/57032/w960_57032-1996.png "INFINITI QX56 2010 Factory Service Manual DIAGNOSIS SYSTEM (BCM)EXL-21
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
Monitor Item [Unit] Description
TURN SIGNAL R
[OFF/ON] Displays the status of the TURN RH switch in combination sw")
DIAGNOSIS SYSTEM (BCM)EXL-21
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
Monitor Item [Unit] Description
TURN SIGNAL R
[OFF/ON] Displays the status of the TURN RH switch in combination switch judged by BCM with the combination switch
reading function
TURN SIGNAL L
[OFF/ON] Displays the status
of the TURN LH switch in co mbination switch judged by BCM with the combination switch
reading function
HI BEAM SW
[OFF/ON] Displays the status of the HI BEAM sw
itch in combination switch judged by BCM with the combination switch
reading function
HEAD LAMP SW1
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
HEAD LAMP SW2
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
LIGHT SW 1ST
[OFF/ON] Displays the status of the HEADLAMP switch in combination switch judged by BCM with the combination
switch reading function
PA S S I N G S W
[OFF/ON] Displays the status of the PASSING sw
itch in combination switch judged by BCM with the combination switch
reading function
AUTO LIGHT SW
[OFF/ON] Displays the status of the AUTO LIGHT switch in combination switch judged by BCM with the combination
switch reading function
FR FOG SW
[OFF/ON] Displays the status of the FR FOG switch in combination switch judged by BCM with the combination switch
reading function
FR WIPER HI
[OFF/ON] Displays the status of the FR WIPER HI switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER LOW
[OFF/ON] Displays the status of the FR WIPER LOW switch in combination switch judged by BCM with the combination
switch reading function
FR WIPER INT
[OFF/ON] Displays the status of the FR WIPER INT switch in combination switch judged by BCM with the combination
switch reading function
FR WASHER SW
[OFF/ON] Displays the status of the FR WASHER switch in combination switch judged by BCM with the combination
switch reading function
INT VOLUME
[1 - 7] Displays the status of wiper intermittent dial position judged by BCM with the combination switch reading
function
RR WIPER ON
[OFF/ON] Displays the status of the RR WIPER switch in combination switch judged by BCM with the combination
switch reading function
RR WIPER INT
[OFF/ON] Displays the status of the RR WIPER INT switch in combination switch judged by BCM with the combination
switch reading function
RR WASHER SW
[OFF/ON] Displays the status of the RR WASHER switch in combination switch judged by BCM with the combination
switch reading function
Revision: April 20092010 QX56
Page 2001 of 4210
![INFINITI QX56 2010 Factory Service Manual DIAGNOSIS SYSTEM (IPDM E/R)EXL-25
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
ACTIVE TEST
Te s t i t e m
TAIL&CLR REQ
[OFF/ON] ×Displays the status of the position light request signal r](/manual-img/42/57032/w960_57032-2000.png "INFINITI QX56 2010 Factory Service Manual DIAGNOSIS SYSTEM (IPDM E/R)EXL-25
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
ACTIVE TEST
Te s t i t e m
TAIL&CLR REQ
[OFF/ON] ×Displays the status of the position light request signal r")
DIAGNOSIS SYSTEM (IPDM E/R)EXL-25
< FUNCTION DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
ACTIVE TEST
Te s t i t e m
TAIL&CLR REQ
[OFF/ON] ×Displays the status of the position light request signal received from BCM via CAN
communication.
HL LO REQ
[OFF/ON] ×
Displays the status of the low beam request signal received from BCM via CAN
communication.
HL HI REQ
[OFF/ON] ×Displays the status of the high beam request signal received from BCM via CAN
communication.
FR FOG REQ
[OFF/ON] ×Displays the status of the front fog lamp request signal received from BCM via
CAN communication.
FR WIP REQ
[STOP/1LOW/LOW/HI] ×
Displays the status of the front wiper request signal received from BCM via CAN
communication.
WIP AUTO STOP
[STOP P/ACT P] ×
Displays the status of the front wiper auto stop signal judged by IPDM E/R.
WIP PROT
[OFF/Block] ×
Displays the status of the front wiper fail-safe operation judged by IPDM E/R.
ST RLY REQ
[OFF/ON] Displays the status of the starter request signal received from ECM via CAN com-
munication.
IGN RLY
[OFF/ON] ×
Displays the status of the ignition relay judged by IPDM E/R.
RR DEF REQ
[OFF/ON] ×Displays the status of the rear defogger request signal received from AV control
unit via CAN communication.
OIL P SW
[OPEN/CLOSE] Displays the status of the oil pressure switch judged by IPDM E/R.
DTRL REQ
[OFF] Displays the status of the daytime light request signal received from BCM via CAN
communication.
HOOD SW
[OPEN/CLOSE] Displays the status of the hood switch judged by IPDM E/R.
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
REAR DEFOGGER OFF
OFF
ON Operates 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 1O
FF
2O FF
3 Operates the cooling fan relay.
4 Operates the cooling fan relay.
Revision: April 20092010 QX56
Page 2006 of 4210
EXL-30
< COMPONENT DIAGNOSIS >
HEADLAMP (HI) CIRCUIT
HEADLAMP (HI) CIRCUIT
DescriptionINFOID:0000000005370270
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:0000000005146640
1.CHECK HEADLAMP (HI) OPERATION
WITHOUT CONSULT-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 LAMPS" 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-30, "
Diagnosis Procedure - Without Daytime Light System", EXL-31, "Diagnosis
Procedure - With Daytime Light System".
Diagnosis Procedure - Wit hout Daytime Light SystemINFOID:0000000005146641
Regarding Wiring Diagram information, refer to EXL-52, "Wiring Diagram".
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 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
Revision: April 20092010 QX56
Page 2007 of 4210
HEADLAMP (HI) CIRCUITEXL-31
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
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.
NO >> GO TO 3.
3.CHECK HEADLAMP (HI) CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector E123.
3. Check continuity between the IPDM E/R harness connector (A) and the front combination lamp harness connector (B).
Does continuity exist?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK FRONT COMBINATION LAMP (HI) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES >> Inspect the headlamp bulb.
NO >> Repair the harness.
Diagnosis Procedure - With Daytime Light SystemINFOID:0000000005146642
Regarding Wiring Diagram information, refer to EXL-56, "Wiring Diagram".
1.CHECK HEADLAMP (HI) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
(+) (−)Voltage
Connector Terminal
LH E11 6 Ground Battery voltage
RH E107 6
ALLIA0852ZZ
AB Continuity
Connector Terminal Connector Terminal
LH E123 55
E11 6
Ye s
RH 56E107 6
AWLIA1371ZZ
Connector Terminal —Continuity
LH E11 2
Ground Yes
RH E107 2
ALLIA0854ZZ
Revision: April 20092010 QX56
Page 2009 of 4210
HEADLAMP (LO) CIRCUITEXL-33
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
HEADLAMP (LO) CIRCUIT
DescriptionINFOID:0000000005146643
The IPDM E/R (intelligent power distribution modul e engine room) controls the headlamp low relay based on
inputs from the BCM via the CAN communication li nes. When the headlamp low relay is energized, power
flows through fuses 40 and 41, located in the IPDM E/R. Power then flows to the front combination lamps to
the headlamp low beam.
Component Function CheckINFOID:0000000005146644
1.CHECK HEADLAMP (LO) OPERATION
WITHOUT CONSULT-III
1. Start IPDM E/R auto active test. Refer to PCS-12, "
Diagnosis Description".
2. Check that the headlamp is turned ON. NOTE:
HI/LO is repeated 1 second each when using the IPDM E/R auto active test.
CONSULT-III
1. Select "EXTERNAL LAMPS" of IPDM E/R active test item.
2. With the test items operating, c heck that the headlamp is turned ON.
Is the headlamp turned ON?
YES >> Headlamp (LO) is normal.
NO >> Refer to EXL-33, "
Diagnosis Procedure - Without Daytime Light System", EXL-34, "Diagnosis
Procedure - With Daytime Light System".
Diagnosis Procedure - Without Daytime Light SystemINFOID:0000000005146645
Regarding Wiring Diagram information, refer to EXL-52, "Wiring Diagram".
1.CHECK HEADLAMP (LO) 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 (LO) OUTPUT VOLTAGE Lo : Headlamp ON
Off : Headlamp OFF
Unit
LocationFuse No.Capacity
Headlamp LO (LH) IPDM E/R4015A
Headlamp LO (RH) IPDM E/R4115A
Revision: April 20092010 QX56
Page 2010 of 4210
EXL-34
< COMPONENT DIAGNOSIS >
HEADLAMP (LO) CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector.
3. Turn the ignition switch ON.
4. Turn the low beam headlamps ON.
5. With the low beam headlamps ON, check the voltage betweenthe combination lamp connector and ground.
Is voltage reading as specified?
YES >> GO TO 4.
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 between the IPDM E/R harness connector and
the front combination lamp harness connector.
Does continuity exist?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES >> Inspect the headlamp bulb.
NO >> Repair the harness.
Diagnosis Procedure - With Daytime Light SystemINFOID:0000000005146646
Regarding Wiring Diagram information, refer to EXL-56, "Wiring Diagram".
1.CHECK HEADLAMP (LO) FUSES
1. Turn the ignition switch OFF.
2. Check that the following fuses are not open.
(+) (−)V olt a ge
Connector Terminal
LH E11 5
Ground Battery voltage
RH E107 5
ALLIA0855ZZ
AB
Continuity
Connector Terminal Connector Terminal
LH E123 52
E11 5
Ye s
RH 54E107 5
AWLIA1372ZZ
Connector Terminal —Continuity
LH E11 1
Ground Yes
RH E107 1
ALLIA0856ZZ
Revision: April 20092010 QX56
Page 2011 of 4210
HEADLAMP (LO) CIRCUITEXL-35
< COMPONENT DIAGNOSIS >
C
DE
F
G H
I
J
K
M A
B
EXL
N
O P
Is the fuse open?
YES >> Repair the harness and replace the fuse.
NO >> GO TO 2.
2.CHECK HEADLAMP (LO) OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector.
3. Turn the ignition switch ON.
4. Turn the low beam headlamps ON.
5. With the low beam headlamps ON, check the voltage between the combination lamp connector and ground.
Is voltage reading as specified?
YES >> GO TO 4.
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 between the IPDM E/R harness connector and the front combination lamp harness connector.
Does continuity exist?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK FRONT COMBINATION LAMP (LO) GROUND CIRCUIT
Check continuity between the front combination lamp harness con-
nector terminal and ground.
Does continuity exist?
YES >> Inspect the headlamp bulb.
NO - RH>>Repair the harness.
NO - LH>>Inspect the daytime light relay. If OK, repair harness. If
NG, replace the daytime light relay.
Unit LocationFuse No.Capacity
Headlamp LO (LH) IPDM E/R4015A
Headlamp LO (RH) IPDM E/R4115A
(+)
(−)Voltage
Connector Terminal
LH E6 5
Ground Battery voltage
RH E108 5
ALLIA0855ZZ
AB
Continuity
Connector Terminal Connector Terminal
LH E123 52
E6 5
Ye s
RH 54E108 5
AWLIA1372ZZ
Connector Terminal —Continuity
LH E6 1
Ground Yes
RH E108 1
ALLIA0856ZZ
Revision: April 20092010 QX56