2009 INFINITI QX56 ignition
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PARKING LAMP CIRCUITEXL-43
< COMPONENT DIAGNOSIS >
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YES >> Repair the harness and replace the fuse.
NO >> GO TO 2.
2.CHECK TAIL LAMP RELAY OUTPUT (VOLTAGE)
1. Turn the ignition switch OFF.
2. Disconnect the front combination lamp connector, rear combination lamp connector and license plate
lamp connector.
3. Turn the ignition switch ON.
4. Turn the parking lamps ON.
5. With the parking lamps ON, check voltage between the front combination lamp connectors and ground.
6. With the parking lamps ON, check voltage between the rear combination lamp connectors and ground.
7. With the parking lamps ON, check voltage between the license plate lamp connector and ground
Are voltage readings as specified?
YES >> GO TO 4.
NO >> GO TO 3.
3.CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT (OPEN)
1. Turn the ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between the IPDM E/R harness connector (A) and the front combination lamp harness connector (B).
(+) (−)V olt a g e
Connector Terminal
LH E6 3Ground Battery voltage
RH E108
ALLIA0857ZZ
(+) (−)V olt a g e
Connector Terminal
LH B70 3Ground Battery voltage
RH B130
AWLIA1622ZZ
(+) (−) Voltage
Connector Terminal
D703 1 Ground Battery voltage
WKIA4613E
AB Continuity
Connector Terminal Connector Terminal
LH E124 57 E6
3Y es
RH E108
AWLIA1373ZZ
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EXL-46
< COMPONENT DIAGNOSIS >
TURN SIGNAL LAMP CIRCUIT
TURN SIGNAL LAMP CIRCUIT
DescriptionINFOID:0000000003776190
The BCM monitors inputs from the combination switch to determine when to activate the turn signals. The
BCM outputs voltage direction to the left and right turn signals during turn signal operation or both during haz-
ard warning operation. The BCM sends a turn signal indicator request to the combination meter via the CAN
communication lines.
The BCM performs the fast flasher operation (fail-safe) if any bulb or harness of the turn signal lamp circuit is
open.
NOTE:
Turn signal lamp blinks at normal speed when using the hazard warning lamp.
Component Function CheckINFOID:0000000003776191
1.CHECK TURN SIGNAL LAMP
CONSULT-III
1. Select "FLASHER" of BCM (FLASHER) active test item.
2. With operating the test items, check that the turn signal lamp blinks.
Does the turn signal lamp blink?
YES >> Turn signal lamp circuit is normal.
NO >> Refer to EXL-46, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003776192
1.CHECK TURN SIGNAL LAMP BULB
Check the applicable lamp bulb to be sure the proper bulb standard is in use and the bulb is not open.
Is the bulb OK?
YES >> GO TO 2.
NO >> Replace the bulb.
2.CHECK TURN SIGNAL LAMP OUTPUT VOLTAGE
1. Turn the ignition switch OFF.
2. Disconnect the front turn/fog lamp connector or the rear combi- nation lamp connector.
3. Turn the ignition switch ON.
4. With turn signal switch operating, check the voltage between the BCM harness connector M20 and ground.
Is voltage reading as specified?
YES >> GO TO 3.
NO >> Replace BCM. Refer to BCS-56, "
Removal and Installation".
LH : Turn signal lamp LH blinking
RH : Turn signal lamp RH blinking
OFF : The turn signal lamp OFF
(+)
(−) Voltage
Connector Terminal
M20 LH 60
Ground
RH 61
ALLIA0896ZZ
PKID0926E
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TURN SIGNAL LAMP CIRCUITEXL-47
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3.CHECK TURN SIGNAL LAMP CIRCUIT FOR OPEN
1. Turn the ignition switch OFF.
2. Disconnect BCM connector M20.
3. Check continuity between the BCM harness connector M20 and the front turn/fog lamps.
4. Check continuity between the BCM harness connector M20 and the rear combination lamp connectors.
5. Check continuity between the BCM harness connector M20 and the door mirror connectors.
Are continuity test results as specified?
YES >> GO TO 4.
NO >> Repair the harnesses or connectors.
4.CHECK TURN SIGNAL LAMP SHORT CIRCUIT
Check continuity between the BCM harness connector M20 and
ground.
Does continuity exist?
YES >> Repair the harnesses or connectors.
NO >> GO TO 5.
5.CHECK TURN SIGNAL LAMP GROUND CIRCUIT
AB Continuity
Connector Terminal Connector Terminal
Front LH M2060 E101
2Yes
Front RH 61 E102
ALLIA0722GB
AB Continuity
Connector Terminal Connector Terminal
Rear LH M2060 B35 4
Ye s
Rear RH 61 B105 4
WKIA4774E
AB
Continuity
Connector Terminal Connector Terminal
Door mirror LH M2060 D4 15
Ye s
Door mirror RH 61 D107 15
WKIA4524E
ConnectorTerminal—Continuity
LH M20 60
Ground No
RH 61
ALLIA0404GB
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OPTICAL SENSOREXL-49
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OPTICAL SENSOR
DescriptionINFOID:0000000003776193
The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to
the BCM.
Component Function CheckINFOID:0000000003776194
1.CHECK OPTICAL SENSOR SIGNAL BY CONSULT-III
CONSULT-III
1. Turn the ignition switch ON.
2. Select "OPTICAL SENSOR" of BC M (HEAD LAMP) DATA MONITOR item.
3. Turn the lighting switch to AUTO.
4. With the optical sensor illuminat ing, check the monitor status.
*: Illuminates the optical sensor. The value may be less than the standard value if brightness is weak.
Is the item status normal?
YES >> Optical sensor is normal.
NO >> Refer to EXL-49, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003776195
1.CHECK OPTICAL SENSOR GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect BCM connector M18 and optical sensor connector M302.
3. Check continuity between BCM harness connector M18 (A) ter-
minal 18 and optical sensor harness connector M302 (B) termi-
nal 3.
4. Check continuity between BCM harness connector M18 (A) ter- minal 18 and ground.
Are continuity test results as specified?
YES >> GO TO 2.
NO >> Repair harness or connector.
2.CHECK OPTICAL SENSOR SIGNAL CIRCUIT
Monitor item ConditionVoltage
OPTICAL SENSOR When illuminating
3.1V or more *
When shutting off light 0.6V or less
AB
Connector Terminal Connector Terminal Continuity M181 8M3023 Y es
A —Contin u it y
Connector Terminal
M18 18Ground No
AWLIA1620ZZ
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HEADLAMP AIMING SWITCHEXL-51
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HEADLAMP AIMING SWITCH
DescriptionINFOID:0000000003776196
The manual headlamp aiming system uses a headlamp aiming switch to adjust the axis of the headlamp aim-
ing motor. The headlamp aimer switch has four sett ings, each with a different resistance value. The head-
lamp aiming motor adjusts to the proper axis based off the position of the headlamp aiming switch.
Diagnosis Procedure - Without Daytime Light SystemINFOID:0000000003776197
1.CHECK HEADLAMP AIMING SWITCH SIGNAL FOR OPEN OR SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148, headlamp aiming motor LH connector E11 and headlamp aiming motor RH connector E107.
3. Check continuity between the headlamp aiming switch connec-
tor M148 terminal 1 and headlamp aiming motor LH E11 and RH
E107 terminal 7.
4. Check continuity between the headlamp aiming switch connec- tor M148 terminal 1 and ground.
Are the continuity test results as specified?
YES >> GO TO 2.
NO >> Repair the harness or connector.
2.CHECK HEADLAMP AIMING SWITCH
1. Check resistance between the headlamp aiming switch termi- nals 1 and 2 in each switch position.
Are the resistance check results as specified?
YES >> GO TO 3.
NO >> Replace the headlamp aiming switch.
3.CHECK HEADLAMP AIMING SWITCH GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148.
3. Check continuity between headlamp aiming switch connector M148 terminal 2 and ground.
Is continuity as specified?
YES >> Inspect headlamp aiming motors.
Connector Terminal Connector Terminal Continuity M148 1E11
7Y es
E107
Connector Terminal —Continuity
M148 1Ground No
AWLIA1093ZZ
Component Terminal Switch Position Resistance
Headlamp
aiming switch 12 06
04 Ω
13 24 Ω
21 91 Ω
31 30 Ω
AWLIA1027ZZ
Connector Terminal —Continuity
M148 2Ground Yes
AWLIA1028ZZ
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EXL-52
< COMPONENT DIAGNOSIS >
HEADLAMP AIMING SWITCH
NO >> Repair harness or connector.
Diagnosis Procedure - With Daytime Light SystemINFOID:0000000004221417
1.CHECK HEADLAMP AIMING SWITCH SIGNAL FOR OPEN OR SHORT CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148, headlamp aiming motor LH connector E6 and headlamp aiming motor RH connector E108.
3. Check continuity between the headlamp aiming switch connec-
tor M148 terminal 1 and headlamp aiming motor LH E6 and RH
E108 terminal 7.
4. Check continuity between the headlamp aiming switch connec- tor M148 terminal 1 and ground.
Are the continuity test results as specified?
YES >> GO TO 2.
NO >> Repair the harness or connector.
2.CHECK HEADLAMP AIMING SWITCH
1. Check resistance between the headlamp aiming switch termi- nals 1 and 2 in each switch position.
Are the resistance check results as specified?
YES >> GO TO 3.
NO >> Replace the headlamp aiming switch.
3.CHECK HEADLAMP AIMING SWITCH GROUND CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect headlamp aiming switch connector M148.
3. Check continuity between headlamp aiming switch connector M148 terminal 2 and ground.
Is continuity as specified?
YES >> Inspect headlamp aiming motors.
NO >> Repair harness or connector.
Connector Terminal Connector Terminal Continuity M148 1E6
7Y es
E108
Connector Terminal —Continuity
M148 1Ground No
AWLIA1093ZZ
Component Terminal Switch Position Resistance
Headlamp
aiming switch 12 06
04 Ω
13 24 Ω
21 91 Ω
31 30 Ω
AWLIA1027ZZ
Connector Terminal —Continuity
M148 2Ground Yes
AWLIA1028ZZ
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BCM (BODY CONTROL MODULE)EXL-107
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HEADLAMP SW1 Headlamp switch OFF OFF
Headlamp switch 1st
ON
HEADLAMP SW2 Headlamp switch OFF
OFF
Headlamp switch 1st ON
HI BEAM SW High beam switch OFF
OFF
High beam switch HI ON
H/L WASH SW NOTE:
The item is indicated, but not monitored OFF
IGN ON SW Ignition switch OFF or ACC
OFF
Ignition switch ON ON
IGN SW CAN Ignition switch OFF or ACC
OFF
Ignition switch ON ON
INT VOLUME Wiper intermittent dial is in a dial position 1 - 7 1 - 7
I-KEY LOCK LOCK button of Intelligent Key is not pressed
OFF
LOCK button of Intelligent Key is pressed ON
I-KEY UNLOCK UNLOCK button of Intelligent Key is not pressed
OFF
UNLOCK button of Intelligent Key is pressed ON
KEY ON SW Mechanical key is removed from key cylinder
OFF
Mechanical key is inserted to key cylinder ON
OIL PRESS SW • Ignition switch OFF or ACC
• Engine running
OFF
Ignition switch ON ON
PASSING SW Other than lighting switch PASS
OFF
Lighting switch PASS ON
REAR DEF SW Rear window defogger switch OFF
OFF
Rear window defogger switch ON ON
RKE LOCK AND UN-
LOCK NOTE:
The item is indicated, but not monitored OFF
ON
RR WASHER SW Rear washer switch OFF
OFF
Rear washer switch ON ON
RR WIPER INT Rear wiper switch OFF
OFF
Rear wiper switch INT ON
RR WIPER ON Rear wiper switch OFF
OFF
Rear wiper switch ON ON
RR WIPER STOP Rear wiper stop position
OFF
Other than rear wiper stop position ON
TAIL LAMP SW Lighting switch OFF
OFF
Lighting switch 1ST ON
TRNK OPNR SW When back door opener switch is not pressed
OFF
When back door opener switch is pressed ON
TURN SIGNAL L Turn signal switch OFF
OFF
Turn signal switch LH ON
TURN SIGNAL R Turn signal switch OFF
OFF
Turn signal switch RH ON
VEHICLE SPEED While driving Equivalent to speedo meter reading
Monitor Item
Condition Value/Status
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BCM (BODY CONTROL MODULE)EXL-109
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Te r m i n a l Wire
color Signal name Signal
input/
output Measuring condition
Reference value or waveform
(Approx.)
Ignition
switch Operation or condition
1BR/W Ignition keyhole illumi-
nation Output OFFDoor is locked (SW OFF)
Battery voltage
Door is unlocked (SW ON) 0V
2SB Combination switch
input 5 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
3G/Y Combination switch
input 4 Input ONLighting, turn, wiper OFF
Wiper dial position 4
4Y Combination switch
input 3 Input ON
Lighting, turn, wiper OFF
Wiper dial position 4
5G/B Combination switch
input 2
Input ONLighting, turn, wiper OFF
Wiper dial position 4
6V Combination switch
input 1
9GR/R Rear window defogger
switch
Input ONRear window defogger switch
ON
0V
Rear window defogger switch
OFF 5V
10 G Hazard lamp flash Input OFF ON (opening or closing)
0V
OFF (other than above) Battery voltage
11 O Ignition switch (ACC
or ON)
InputACC or
ON Ignition switch ACC or ON
Battery voltage
12 R/L Front door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
13 GR Rear door switch RH Input OFF ON (open)
0V
OFF (closed) Battery voltage
15 L/W Tire pressure warning
check connector
Input OFF
—5V
18 P Remote keyless entry
receiver and optical
sensor (ground)
Output OFF
—0V
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
Revision: December 20092009 QX56