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LT-66
HEADLAMP AIMING CONTROL
Revision: November 20092006 QX56
Wiring Diagram — H/AIM —EKS00B98
WKWA3650E
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HEADLAMP AIMING CONTROLLT-67
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Revision: November 2009 2006 QX56
WKWA2488E
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LT-68
HEADLAMP AIMING CONTROL
Revision: November 20092006 QX56
Headlamp Aiming SwitchEKS00B99
REMOVAL AND INSTALLATION
Removal
1. Remove cluster lid A. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Carefully release the headlamp aiming switch retaining pawls and remove the switch.
Installation
Installation is in the reverse order of removal.
Switch Circuit InspectionEKS00B9A
Using a circuit tester, check continuity between the headlamp aiming
switch connector terminals in each operation status of the aiming
switch.
WKIA1879E
Resistor tolerance : ± 5%
WKIA1882E
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FRONT FOG LAMPLT-69
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Revision: November 2009 2006 QX56
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationEKS00B9B
System DescriptionEKS00B9C
Control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The light-
ing switch must be in the 2ND position or AUTO position (LOW beam is ON) for front fog lamp operation.
When the lighting switch is placed in the fog lamp position, the BCM (body control module) receives input sig-
nal requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communi-
cated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication
lines. The CPU (central processing unit) of the IPDM E/R controls the front fog lamp relay coil. When acti-
vated, this relay directs power to the front fog lamps.
OUTLINE
Power is supplied at all times
to ignition relay, located in the IPDM E/R, and
to front fog lamp relay, located in the IPDM E/R, and
through 20A fuse (No. 53, located in the IPDM E/R)
to CPU of the IPDM E/R, and
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM terminal 70.
When the ignition switch is in ON or START position, power is supplied
to ignition relay, located in the IPDM E/R, and
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38.
Ground is supplied
to BCM terminal 67
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 59
WKIA3466E
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LT-70
FRONT FOG LAMP
Revision: November 20092006 QX56
through grounds E9, E15 and E24.
FOG LAMP OPERATION
The fog lamp switch is built into the combination switch. The lighting switch must be in the 2ND position or
AUTO position (LOW beam is ON) and the fog lamp switch must be ON for fog lamp operation.
With the fog lamp switch in the ON position, the CPU of the IPDM E/R grounds the coil side of the fog lamp
relay. The fog lamp relay then directs power
through 20A fuse (No. 56, located in the IPDM E/R)
through IPDM E/R terminal 50
to front turn/fog lamp LH terminal 1, and
through IPDM E/R terminal 51
to front turn/fog lamp RH terminal 1.
Ground is supplied
to front turn/fog lamp LH and RH terminal 3
through grounds E9, E15 and E24.
With power and ground supplied, the front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), the fog lamp switch is ON, and the
ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the fog lamps (and headlamps) remain illuminated for 5 minutes, then the fog lamps (and
headlamps) are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionEKS00B9D
Refer to LAN-26, "CAN COMMUNICATION" .
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FRONT FOG LAMPLT-71
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Revision: November 2009 2006 QX56
Wiring Diagram — F/FOG —EKS00B9E
WKWA3652E
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LT-72
FRONT FOG LAMP
Revision: November 20092006 QX56
WKWA3653E
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FRONT FOG LAMPLT-73
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Revision: November 2009 2006 QX56
Terminals and Reference Values for BCMEKS00B9F
Te r m i n a l
No. Wire
color Signal name Measuring condition
Reference value
(Approx.)
Ignition
switch Operation or condition
2 SB Combination switch input 5 ONLighting, turn, wiper OFF
Wiper dial position 4
3 G/Y Combination switch input 4 ONLighting, turn, wiper OFF
Wiper dial position 4
4 Y Combination switch input 3 ONLighting, turn, wiper OFF
Wiper dial position 4
5 G/B Combination switch input 2 ONLighting, turn, wiper OFF
Wiper dial position 4
6 V Combination switch input 1
32 R/G Combination switch output 5 ON Lighting, turn, wiper OFF
Wiper dial position 4
33 R/Y Combination switch output 4 ON Lighting, turn, wiper OFF
Wiper dial position 4
34 L Combination switch output 3 ON Lighting, turn, wiper OFF
Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E