2007 INFINITI QX56 Factory Service Manual

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Page 2297 of 3061

INFINITI QX56 2007 Factory Service Manual LT-90
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.CHECK PARKING, LICENSE PLATE AND TAIL LAMP CIRCUIT
1. Turn ignition switch OFF.
2. Disconn

Page 2298 of 3061

INFINITI QX56 2007 Factory Service Manual PARKING, LICENSE PLATE AND TAIL LAMPS
LT-91
< SERVICE INFORMATION >
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1. Check continuity between front combination lamp harness con-
nector and ground.
2. Check continui

Page 2299 of 3061

INFINITI QX56 2007 Factory Service Manual LT-92
< SERVICE INFORMATION >
PARKING, LICENSE PLATE AND TAIL LAMPS
Installation
Installation is in the reverse order of removal.
SIDE MARKER LAMP (FRONT)
Refer to LT-21, "Bulb Replacement".
TA I L L

Page 2300 of 3061

INFINITI QX56 2007 Factory Service Manual REAR COMBINATION LAMP
LT-93
< SERVICE INFORMATION >
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REAR COMBINATION LAMP
Bulb ReplacementINFOID:0000000003533449
SIDE MARKER LAMP (REAR)
Side marker lamps (rear) are L

Page 2301 of 3061

INFINITI QX56 2007 Factory Service Manual LT-94
< SERVICE INFORMATION >
TRAILER TOW
TRAILER TOW
Component Parts and Harness Connector LocationINFOID:0000000003533451
System DescriptionINFOID:0000000003533452
Power is supplied at all times
•

Page 2302 of 3061

INFINITI QX56 2007 Factory Service Manual TRAILER TOW
LT-95
< SERVICE INFORMATION >
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• to trailer tow relay 1 terminal 3,
• through 20A fuse (No. 53, located in the IPDM E/R)
• to CPU (central processing u

TRAILER TOW
LT-95
< SERVICE INFORMATION >
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• to trailer tow relay 1 terminal 3,
• through 20A fuse (No. 53, located in the IPDM E/R)
• to CPU (central processing unit) of the IPDM E/R,
• through 30A fusible link (letter j , located in the fuse and fusible link box)
• to trailer tow relay 2 terminals 3 and 6, and
• through 40A fusible link (letter k , located in the fuse and fusible link box)
• to electric brake (pre-wiring) terminal 5.
With the ignition switch in the ON or START position, power is supplied
• to ignition relay, located in the IPDM E/R,
• through 10A fuse (No. 59, located in the fuse and relay box)
• to BCM terminal 38, and
• through 10A fuse (No. 51, located in the IPDM E/R)
• to trailer tow relay 2 terminal 1.
Ground is supplied
• to BCM terminal 67
• to electric brake (pre-wiring) terminal 1,
• through grounds M57, M61 and M79,
• to IPDM E/R terminals 38 and 59
• to trailer tow relay 1 terminal 2
• to trailer tow relay 2 terminal 2, and
• to trailer connector terminal 2
• to trailer turn relay LH and RH terminal 2
• through grounds E9, E15 and E24.
TRAILER TAIL LAMP OPERATION
The trailer tail lamps are controlled by the trailer tow relay 1.
With the lighting switch in the parking and tail lamp ON (1ST) position, AUTO position (and the auto light sys-
tem is activated) or headlamp ON (2ND) position, power is supplied
• through the tail lamp relay, located in the IPDM E/R
• through 10A fuse (No. 36, located in the IPDM E/R)
• through IPDM E/R terminal 49
• to trailer tow relay 1 terminal 1.
When energized, trailer tow relay 1 supplies tail lamp power to trailer connector terminal 6.
TRAILER TURN SIGNAL AND HAZARD LAMP OPERATION
The trailer turn signal and hazard lamps are controlled by the BCM through trailer turn relays (LH and RH). If
either turn signal or the hazard lamps are turned on, the BCM supplies voltage to the trailer turn relays (LH
and RH) to make them cycle on and off.
Trailer turn relay LH output is supplied
• through BCM terminal 52
• to trailer turn relay LH terminal 1.
Trailer turn relay RH output is supplied
• through BCM terminal 51
• to trailer turn relay RH terminal 1.
Left turn signal and hazard lamp output is supplied
• through trailer turn relay LH terminal 3
• to trailer connector terminal 1.
Right turn signal and hazard lamp output is supplied
• through trailer turn relay RH terminal 3
• to trailer connector terminal 4.
TRAILER STOP LAMP OPERATION
The trailer stop lamps are controlled by the electric brake. The electric brake receives stop lamp switch signal
when the brake pedal is pressed.
When the brake pedal is pressed, power is supplied
• through electric brake (pre-wiring) terminal 3
• to trailer connector terminal 3.
TRAILER POWER SUPPLY OPERATION
The trailer power supply is controlled by the trailer tow relay 2.
When the ignition switch is in the ON or START position, power is supplied
• through 10A fuse (No. 51, located in the IPDM E/R)

Page 2303 of 3061

INFINITI QX56 2007 Factory Service Manual LT-96
< SERVICE INFORMATION >
TRAILER TOW
• through IPDM E/R terminal 16
• to trailer tow relay 2 terminal 1.
When energized, the trailer tow relay 2 supplies power
• through trailer tow relay 2

Page 2304 of 3061

INFINITI QX56 2007 Factory Service Manual TRAILER TOW
LT-97
< SERVICE INFORMATION >
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Wiring Diagram - T/TOW -INFOID:0000000003533454
WKWA3665E

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