light INFINITI M35 2007 Factory Service Manual

AUTO LIGHT SYSTEM
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Lighting Switch InspectionNKS003QB
1. CHECK LIGHTING SWITCH INPUT SIGNAL
With CONSULT-II
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on
“SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen,
and make sure “AUTO LIGHT SW” turns ON–OFF linked with
operation of lighting switch.
Without CONSULT-II
Refer to LT- 2 3 9 , "
Combination Switch Inspection" .
OK or NG
OK >> INSPECTION END
NG >> Replace combination switch (lighting switch). Refer to LT- 2 3 9 , "
Combination Switch Inspection" .
Optical Sensor System InspectionNKS003QC
1. CHECK OPTICAL SENSOR INPUT SIGNAL
With CONSULT-II
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on
“SELECT TEST ITEM” screen.
2. Select “DATA MONITOR” on “SELECT DIAG MODE” screen.
On “OPTICAL SENSOR”, check difference in the voltage when
optical sensor is illuminated and not illuminated.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If the optical sensor is insufficiently
illuminated, the measured value may not satisfy the standard.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If the optical sensor is insufficiently
illuminated, the measured value may not satisfy the standard.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.When lighting switch is AUTO
position: AUTO LIGHT SW ON
PKIA7595E
Illuminated
OPTICAL SENSOR : 3.1 V or more
Not illuminated
OPTICAL SENSOR : 0.6 V or less
Terminal
ConditionVoltage
(Approx.) (+)
(-)
BCM
connectorTerminal
M1 14 Ground Illuminated
Optical sensor3.1 V or more
Not illuminated
Optical sensor0.6 V or less
PKIA7596E
PKIB6163E

LT-132
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
2. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and optical sensor connector.
3. Check continuity (open circuit) between BCM harness connector
and optical sensor harness connector.
4. Check continuity (short circuit) between BCM harness connector
and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
3. CHECK OPTICAL SENSOR SIGNAL CIRCUIT
1. Check continuity (open circuit) between BCM harness connector
and optical sensor harness connector.
2. Check continuity between (short circuit) BCM harness connector
and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK OPTICAL SENSOR GROUND CIRCUIT
1. Check continuity (open circuit) between BCM harness connector
and optical sensor harness connector.
2. Check continuity (short circuit) between BCM harness connector
and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
BCM Optical sensor
Continuity
Connector Terminal Connector Terminal
M1 17 M48 1 Yes
BCM connector Terminal
GroundContinuity
M1 17 No
PKIA6257E
BCM Optical sensor
Continuity
Connector Terminal Connector Terminal
M1 14 M48 2 Yes
BCM connector Terminal
GroundContinuity
M1 14 No
PKIA6258E
BCM Optical sensor
Continuity
Connector Terminal Connector Terminal
M1 18 M48 3 Yes
BCM connector Terminal
GroundContinuity
M1 18 No
PKIA6259E

AUTO LIGHT SYSTEM
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5. CHECK OPTICAL SENSOR VOLTAGE
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> Replace optical sensor. Refer to LT- 1 3 3 , "Removal and
Installation for Optical Sensor" .
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installation of BCM" .
Removal and Installation for Optical SensorNKS003QD
REMOVAL
1. Disengage the tab (A) and disconnect connector.
2. Remove optical sensor (1).
INSTALLATION
Installation is the reverse order of removal.
Terminal
Voltage
(Approx.) (+)
(-)
BCM connector Terminal
M1 17 Ground 5.0 V
SKIA5894E
SKIB4159E

ACTIVE AFS
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Height sensor signal from height sensor connected to AFS control unit

Swivel position sensor signal from swivel position sensor built into both right and left swivel actuators con-
nected to AFS control unit
In response to the state of control, AFS control unit switches commands of AFS off indicator signal sent to uni-
fied meter and A/C amp. via CAN communication; and then turns on/off or blinks AFS off indicator lamp built in
the combination meter.
AFS (ADAPTIVE FRONT-LIGHTING SYSTEM)
AFS increases viewability of cornering direction by changing light axis automatically to the direction of travel
with low beam headlamps during vehicle's cornering.
AFS switch allows AFS function to be stopped.
AFS control unit determines the current vehicle conditions by each received signals, and sends commands to
the low beam headlamp to swivel. With the headlamps (HIGH/LOW) illuminated, the AFS switch on, engine
running and the A/T select lever in any position but range P or range R, the low beam headlamps are opera-
tive by AFS control unit commands.
As the steering wheel is turned to the left (right), the left (right) low beam headlamp will automatically swivel
angle in accordance with the steering angle and vehicle speed, and stop the operation when the steering
wheel is returned to the straight-ahead position.
Swivel operation allows drive signal to be sent to the swivel actuator on the side that AFS control unit is actu-
ated. Step motor built in swivel actuator adjusts low beam projector of headlamp to swivel angle that matches
drive signal. Swivel position sensor built in swivel actuator detects swivel angle and transmits a swivel position
sensor signal to the AFS control unit. AFS control unit monitors if swivel operation is performed normally via
swivel position sensor signal.

Swivel operation
*1: Included high beam illuminated.
*2: The swivel operates when running at approx. 25 km/h (15.5 MPH). When swivel operation is started, it works on until vehicle
stops.
*3: The low beam headlamps perform small movements when AFS control unit detects start of the engine. This is normal with ini-
tialization of swivel actuator by AFS control unit.Low beam
statusA/T selector
lever positionVehicle speed AFS switch Engine speed Low beam
headlamp LH
(swivel)Low beam
headlamp RH
(swivel)
Left turn
Illuminated*
1Except P, R
Running*2ONWhile engine
running*3×
Right turn
Illuminated*
1Except P, R Irrespective ONWhile engine
running*3×

LT-136
ACTIVE AFS
Revision: 2007 April2007 M35/M45
HEADLAMP AUTO AIMING
Headlamp auto aiming control automatically corrects vertical deviation of light axis that is brought by the
change of vehicle height with changing number of passenger and laden weight, and relieves dazzle to oncom-
ing vehicles.
AFS control unit determines the current vehicle conditions by each received signals, and sends commands to
the low beam headlamps to auto aiming. With the headlamps (HIGH/LOW) illuminated and engine running,
the low beam headlamps are operative by AFS control unit commands.
The height sensor is located on the left side of the rear suspension member and detects rear vehicle height
change by sensing the displacement of the rear suspension arm. And transmits a height sensor signal to the
AFS control unit.
With reference to the rear vehicle height under the empty condition, light axis of low beam with low rear vehi-
cle height is relatively higher than that with the empty condition. AFS control unit switches drive signal corrects
height of low beam axis to maintain height of light axis with empty condition.
Light axis of low beam with high rear vehicle height is relatively lower than that with empty condition. Light axis
of low beam with empty condition is set as upper limit of headlamp auto aiming control operation. Control to
correct deviation is not performed when light axis of low beam gets relatively higher than that with empty con-
dition. Timing of control is switched in accordance with driving conditions.

Headlamp auto aiming operation
*1: Included high beam illuminated
*2: Control timing of drive signal is switched by vehicle speed and accelerating/decelerating vehicle.
*3: Control is performed without regard to the condition of AFS switch. Headlamp auto aiming control function cannot be cancelled.
OUTLINE
Power is supplied
When the ignition switch is ON or START position, power is supplied

through 10A fuse [No.12, located in fuse block (J/B)]

to AFS control unit terminal 1

to front combination lamp LH and RH terminal 13

to AFS switch terminal 1

to unified meter and A/C amp. terminal 53.
Ground is supplied

to AFS control unit terminal 25

through grounds M16 and M70,

to front combination lamp LH and RH terminal 11

through grounds E22 and E43.
SKIB4707E
Operating range With 18-inch wheel (Reference value) With 19-inch wheel (Reference value) Vehicle height
A 0 mm (Standard position) 0 mm (Standard position) Unloaded vehicle position
B Approx. 200 mm (7.9 in) Approx.180 mm (7.1 in) Low
Low beam status Vehicle speed Engine speed AFS switch
Illuminated*
1Control switch by driving conditions*2While engine running
Irrespective*3

ACTIVE AFS
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AFS OPERATION
When The Steering Wheel Is Turned To The Left
Swivel motor driving signal (1-phase) is transmitted when the steer-
ing wheel is turned to left approximately more than 10* degrees
(predetermined), with vehicle speed at approximately 25 km/h (15.5
MPH) or more, headlamps (HIGH/LOW) illuminated, AFS switch ON
and the engine running and the A/T select lever in any position
except range P or R.
* : Slightly different from the case when it is turned to the right.
Swivel motor driving signal (1-phase) is sent

to front combination lamp LH terminal 17

through AFS control unit terminal 15,

to AFS control unit terminal 38

through front combination lamp LH terminal 21.
And swivel motor driving signal (2-phase) is sent:

to front combination lamp LH terminal 16

through AFS control unit terminal 17,

to AFS control unit terminal 36

through front combination lamp LH terminal 20.
Swivel position sensor detects swivel angle during ignition switch ON, and transmits swivel position sensor
signals to the AFS control unit:
When ignition switch is turn to ON position, power is supplied

to front combination lamp LH terminal 15

through AFS control unit terminal 24.
When ignition switch is turn to ON position, swivel position sensor signal input is supplied

to AFS control unit terminal 29

through front combination lamp LH terminal 14.
Ground is supplied

to front combination lamp LH terminal 19

through AFS control unit terminal 27.
The low beam headlamp LH starts to swivel to the left.
The swivel motor driving signals are blocked and the swivel motion stops when the steering angle reaches
approximately more than 80 degrees (predetermined). The low beam headlamp will not swivel any further no
matter how further left. As the steering wheel is turned back to the right, the swivel motor driving signals (both
1-phase and 2-phase) will be reversed, causing low beam headlamp LH to start swiveling to the right. When
steering angle becomes smaller than predetermined value, the low beam headlamp is set in the straight-
ahead position, swivel motor driving signals are blocked and low beam headlamps stop swiveling.
When The Steering Wheel Is Turned To The Right
Swivel motor driving signal (1-phase) is transmitted when the steer-
ing wheel is turned to right approximately more than 10* degrees
(predetermined), with headlamps (HIGH/LOW) illuminated, AFS
switch ON, the engine running and the A/T select lever in any posi-
tion except range P or R.
* : Slightly different from the case when it is turned to the left.
Swivel motor driving signal (1-phase) is sent

to front combination lamp RH terminal 16

through AFS control unit terminal 34,

to AFS control unit terminal 11

through front combination lamp RH terminal 20.
And swivel motor driving signal (2-phase) is sent

to front combination lamp RH terminal 17

through AFS control unit terminal 32,

to AFS control unit terminal 13
SKIB4705E
SKIB4706E

LT-152
ACTIVE AFS
Revision: 2007 April2007 M35/M45
CONSULT-II Function (ADAPTIVE LIGHT)NKS003QM
CONSULT-II can display each diagnostic item using diagnostic test modes shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
WORK SUPPORT (STEERING ANGLE SENSOR ADJUSTMENT)
Work Support Item List
CAUTION:
Never use this function but on VDC side.
Notes on Steering Angle Sensor (Neutral Point) Adjustment

Be sure to adjust steering angle sensor neutral point before driving if any of the following has been
removed/installed or replaced: Steering angle sensor; Steering system part, Suspension system part.

On vehicle with VDC, perform steering angle sensor neutral point adjustment only on VDC side. Never
perform the adjustment on ADAPTIVE LIGHT side as this may lead to VDC malfunctions. If the adjust-
ment has been performed on AFS side, readjust on VDC side. For steering angle sensor neutral point
adjustment procedures on VDC side, refer to BRC-6, "
Adjustment of Steering Angle Sensor Neutral Posi-
tion" in “ON-VEHICLE SERVICE”.

When replaced steering angle sensor, AFS control unit detects “DTC B2515 ST ANG SEN SIG”. Delete
the malfunction history after adjust steering angle sensor on VDC side.

Steering angle sensor neutral point adjustment should be performed using CONSULT-II. (The adjustment
will not be possible without CONSULT-II.)
Operation Procedure
Refer to BRC-6, "Adjustment of Steering Angle Sensor Neutral Position" .
WORK SUPPORT (LEVELIZER ADJUSTMENT)
Work Support Item List
Operation Procedure
1. Set the vehicle in unload condition. (Removal all loads in driver, passenger and trunk rooms.)
2. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
3. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
4. Touch “LEVELIZER ADJUSTMENT”.
5. Touch “START”.
6. “ADJUSTMENT COMPLETE” will be displayed.
CAUTION:
When “CAN NOT BE TESTED” is displayed, AFS control unit stops levelizer adjustment as it
detected the change of height sensor signal. AFS control unit detects “DTC B2519 LEVELIZER
CALIB”.
System part Check item, diagnosis mode Description
ADAPTIVE LIGHTWORK SUPPORTAdjusts steering angle sensor (Never use this function but on VDC side) and
adjusts levelizer.
SELF-DIAG RESULTS Displays self-diagnosis
DATA MONITOR Displays AFS control unit inputs and outputs in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TESTAFS control unit sends a drive signal to electronic components to check their
operation.
ECU PART NUMBER AFS control unit part number can be read.
Item Description
ST ANG SEN ADJUSTMENT Adjust steering angle sensor neutral point (straight-ahead position).
Item Description
LEVELIZER ADJUSTMENT Adjust the height sensor signal value at unloaded vehicle position recognized by AFS control unit.

ACTIVE AFS
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Turn ignition switch OFF not to change the vehicle height. Then turn ignition switch ON and per-
form levelizer adjustment again.

When “ADJUSTMENT COMPLETE” is displayed, and “NO DTC IS DETECTED” is displayed on
self-diagnosis results, levelizer adjustment is completed.

When “ADJUSTMENT COMPLETE” is displayed, and “B2514 HI SEN UNUSUAL” is displayed on
self-diagnosis results, refer to LT- 1 7 5 , "
DTC B2514 HI SEN UNUSUAL RR" .
7. Touch “END”.
8. Turn ignition switch OFF.
SELF-DIAG RESULTS
Operation Procedure
1. Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.
2. Touch “SELF-DIAG RESULTS” on the “SELECT DIAG MODE” screen.
3. Check display content in self-diagnostic results.
CAUTION:
DTC B2503 and B2504 cannot be detected before the swivel operation. Thus, perform swivel operation
first, and then check the display in self-diagnostic results.
Description of DTC and Solutions after Detection
CONSULT-II can detect DTC (Diagnosis trouble code). The descriptions and solutions of DTC are listed
below.
Details of
error
indication
detected by
CONSULT-
IIConditions of error detectionFail-safe
1. Swivel operation
2. Auto aiming operation
3. AFS OFF indicator operation
4. CancellationReference
CAN
COMM CIR-
CUIT
[U1000]Any of several items below have errors.

TRANSMIT DIAG

Reception from ECM

Reception from unified meter and A/C amp.

Reception from TCM

Reception from steering angle sensor

Reception from IPDM E/R1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Stop the aiming motors when the
malfunction occurred.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.LAN-50, "
CAN
System Speci-
fication Chart".
CONTROL
UNIT (CAN)
[U1010]AFS control unit malfunctions.1. Stop the swivel motor RH and
LH when the malfunction
occurred.
2. Stop aiming motors when the
malfunction occurred.
3. Flash at intervals of approx. 1
second when keeping error state
for 2 seconds or longer.
4. Turn ignition switch OFF.Replace
AFS control
unit. LT-192

ACTIVE AFS
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DATA MONITOR
Operation Procedure
1. Touch “ADAPTIVE” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch “ALL SIGNALS” or “SELECTION FROM MENU” on “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch items to be monitored. When “ALL SIGNALS” is
selected, all items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring and status of the item being monitored can be recorded. To stop
recording, touch “STOP”.
Data Monitor item
ALL SIGNALS Monitors all items.
SELECTION FROM MENU Selects items and monitors them.
Monitors itemMeasuring condition
Description
Operation or conditionReference
value
STR ANGLE SIG “ ° ” Steering wheelStraight-ahead Approx. 0°
Displays steering angle based on
steering angle sensor signals.
TurnedApprox. −550°
to 550°
VHCL SPD “ km/h ” —Displays vehicle speed based on
vehicle speed sensor signals.
SLCT LVR POSI “ P – 1 ” —Displays A/T selector lever position
based on AT position indicator sig-
nals.
HEAD LAMP “ ON/OFF ” Lighting switch 2ND ON Displays low beam headlamps on/off
status based on low beam status sig-
nal. Out of 2ND OFF
AFS SW “ ON/OFF ” AFS switchON ON
Displays AFS switch ON/OFF position
based on AFS switch signals.
OFF OFF
HI SEN OTP RR “ V ”Vehicle height
(With 18-inch wheel)Unloaded vehi-
cle positionApprox. 2.5 V
Displays vehicle height value based
on height sensor signals. Maximum
laden conditionApprox. 1.0 V
Vehicle height
(With 19-inch wheel)Unloaded vehi-
cle positionApprox. 2.5 V
Maximum
laden conditionApprox. 1.3 V
LEV ACTR VLTG “% ”Low beam headlamp
auto aiming
(With 18-inch wheel)Unloaded vehi-
cle positionApprox.
70.0%
Displays aiming motor drive signal
based on AFS control unit interpreta-
tion of various vehicle sensor signals.
The value is a ratio to IGN power sup-
ply. Maximum
laden conditionApprox.
38.0%
Low beam headlamp
auto aiming
(With 19-inch wheel)Unloaded vehi-
cle positionApprox.
70.0%
Maximum
laden conditionApprox.
41.8%
SWVL SEN RH* “ ° ”Low beam headlamp
(right) swivelOFF Approx. 0°Displays low beam headlamp (right)
swivel angle based on swivel position
sensor signals (right). ON +°
SWVL SEN LH* “ ° ”Low beam headlamp
(left) swivelOFF Approx. 0°Displays low beam headlamp (left)
swivel angle based on swivel position
sensor signals (left). ON +°

LT-158
ACTIVE AFS
Revision: 2007 April2007 M35/M45
CAUTION:
*: The value can be slightly different between that is displayed on “SWVL SEN RH/LH” and that on “SWVL ANGLE RH/LH”.SWVL ANGLE RH* “ ° ”Low beam headlamp
(right) swivelOFF Approx. 0°Displays swivel motor drive signal
(right) based on AFS control unit inter-
pretation of various vehicle sensor
signals. ON +°
SWVL ANGLE LH* “ ° ”Low beam headlamp
(left) swivelOFF Approx. 0°Displays swivel motor drive signal
(left) based on AFS control unit inter-
pretation of various vehicle sensor
signals. ON +° Monitors itemMeasuring condition
Description
Operation or conditionReference
value