component INFINITI M35 2007 Factory Service Manual

AUTO LIGHT SYSTEM
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Revision: 2007 April2007 M35/M45
AUTO LIGHT SYSTEMPFP:28491
Component Parts and Harness Connector LocationNKS003PY
System DescriptionNKS003PZ
Automatically turns ON/OFF the parking lamps and the headlamps in accordance with ambient light.
Timing for when lamps turn ON/OFF can be selected using four modes.
OUTLINE
The auto light control system has an optical sensor inside it that detects outside brightness.
When the lighting switch is in AUTO position, it automatically turns ON/OFF the parking lamps and the head-
lamps in accordance with ambient light. Sensitivity can be adjusted in four steps. For the details of the setting,
Refer to LT- 1 2 7 , "
SETTING CHANGE FUNCTIONS" .
Optical sensor, power is supplied

from BCM (body control module) terminal 17

to optical sensor terminal 1.
Optical sensor, ground is supplied

to optical sensor terminal 3

through BCM terminal 18.
When ignition switch is turn to ON position, and
When outside brightness is darker than prescribed level, input is supplied

from optical sensor terminal 2

to BCM terminal 14.
The headlamps will then illuminate. For a description of headlamp operation, Refer to LT- 11 5 , "
System
Description" .
PKID0501E

LT-116
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
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 (or if auto light system is activated), and
the ignition switch is turned from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
DELAY TIMER FUNCTION
Delay timer function carries out a function that BCM activates the timer and controls lights out of headlamps by
door switch signal and lightning switch signal when turning the Ignition switch OFF while it is ON and head-
lamps are ON by the auto light function.
Timer types are a 5 minutes timer and a 45 seconds timer

When opening any door (door switch is ON), the 5 minutes timer starts and then headlamps go out five
minutes later

When all the doors are closed (from door switch ON to OFF), the 45 second timer starts and then head-
lamps go out 45 seconds later. If any door is opened (door switch ON) while the 45 seconds timer is in
operation, the 5 minutes timer starts again

The timer stops when turning on the ignition switch or turning off the auto light switch under the above
conditions.
Delay timer control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionNKS003Q0
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing the high rate of information transmission with less wir-
ing. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS003Q1
Refer to LAN-50, "CAN System Specification Chart" .
Major Components and FunctionsNKS003Q2
Components Functions
BCM

Turns on/off circuits of tail light and headlamp according to signals from optical sensor, lighting switch
(AUTO), driver door switch, passenger door switch, rear door switch, and ignition switch (ON, OFF).
Optical sensor

Converts outside brightness (lux) to voltage, and sends it to BCM. (Detects brightness of 50 to 1,300 lux)

LT-134
ACTIVE AFS
Revision: 2007 April2007 M35/M45
ACTIVE AFSPFP:253C0
Component Parts and Harness Connector LocationNKS003QE
System DescriptionNKS003QF
AFS control unit controls AFS and headlamp auto aiming.
The following signals are input to AFS control unit via CAN communication:

Steering angle sensor signal

A/T position indicator signal

Low beam status signal

Vehicle speed signal

Engine speed signal
Other signals are input as follows:

AFS switch signal from AFS switch connected to AFS control unit
PKID0502E

LT-140
ACTIVE AFS
Revision: 2007 April2007 M35/M45
Component Parts DescriptionNKS003QG
AFS CONTROL UNIT
AFS control unit determines current vehicle conditions by received signals and controls AFS and headlamp
auto aiming.
SWIVEL ACTUATOR
Swivel actuator is configured with swivel motor and swivel position
sensor and is built in headlamps.

Swivel motor (step motor)
Swivel motor is a two−phase step motor. It is driven according to drive signals from AFS control unit when
two drive windings are energized in set sequences, and adjusts low beam projector of headlamp.
The direction of actuator rotation can be changed as desired by selecting appropriate energizing
sequences.

Swivel position sensor
Swivel position sensor detects swivel angle and transmits a swivel position sensor signal to the AFS con-
trol unit.
AIMING MOTOR
Aiming motor is installed outside the headlamps. Headlamp aiming
motors set the low beam projectors according to headlamp aiming
motor drive signals received from AFS control unit.
SKIB4688E
SKIB4690E
SKIB4688E

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.

LT-156
ACTIVE AFS
Revision: 2007 April2007 M35/M45
CAUTION:

If DTC relating to CAN communication [U1000] and other components are displayed at the same
time, diagnose CAN communication first.

Make sure of the normal operation after the parts (except AFS control unit) replacement according
to the self-diagnosis results. Delete the malfunction history.
Display Results

0: There is malfunction now.

1 – 39: Displays when it is normal at present and finds malfunction in the past. It increases in order
of 0→1→2...38→39 after returning to the normal condition whenever IGN OFF→ON. If it is over 39,
it is fixed to 39 until the self-diagnostic results are erased. It returns to 0 when malfunction is
detected again in the process.
ECU CIRC
[B2521]Any of several statuses below

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of swivel position sensor (RH) power
supply (AFS control unit terminal 4).

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of swivel position sensor (RH) signal (AFS con-
trol unit terminal 9).

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of swivel position sensor (LH) power
supply (AFS control unit terminal 24).

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of swivel position sensor (LH) signal (AFS con-
trol unit terminal 29).

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) or ground of height sensor power supply (AFS
control unit terminal 6).

Short circuit exists for 2 seconds or longer on power supply
(approx. 12 V) of height sensor signal (AFS control unit termi-
nal 28).

AFS control unit (RAM/ROM) 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.LT- 1 7 9 , "
DTC
B2521 ECU
CIRC"
ECM SIG
[B2522]Cannot receive engine speed signal.1. Back to the initial position.
2. Stop 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.EC-126,
"SELF-DIAG
RESULTS
MODE".
If above sys-
tem is normal,
replace AFS
control unit.
AFS SIG
[B2523]Cannot transmit AFS off indicator signal.1. Back to the initial position.
2. Normal operation
3. Flashes 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- 1 9 2
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

LT-194
FRONT FOG LAMP
Revision: 2007 April2007 M35/M45
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationNKS003R2
System DescriptionNKS003R3
The control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The
lighting switch must be in the 2ND position or AUTO position (headlamp is ON) for front fog lamp operation.
When the lighting switch is placed in fog lamp position, the BCM (body control module) receives input signal
requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communicated
to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines. The
CPU (central processing unit) located in the IPDM E/R controls the front fog lamp relay coil. When activated,
this relay directs power to the front fog lamps.
PKIC1984E

LT-212
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2007 April2007 M35/M45
TURN SIGNAL AND HAZARD WARNING LAMPSPFP:26120
Component Parts and Harness Connector LocationNKS003RK
System DescriptionNKS003RL
TURN SIGNAL OPERATION
With the ignition switch is in the ON or START position, power is supplied

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38,

through 10A fuse [No. 14, located in fuse block (J/B)]

to combination meter terminal 12,

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

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

to BCM terminal 52

to combination meter terminals 9, 10 and 11

to unified meter and A/C amp. terminals 55 and 71

through grounds M16 and M70.
PKIC0620E

LT-248
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2007 April2007 M35/M45
PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationNKS003SH
System DescriptionNKS003SI
The control of the parking, license plate and tail lamp operation is dependent upon the position of the lighting
switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body control
module) receives input signal requesting the parking, license plate and tail lamps to illuminate. This input sig-
nal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) located in the IPDM E/R controls the tail lamp relay
coil. This relay, when energized, directs power to parking, license plate and tail lamps, which then illuminate.
OUTLINE
Power is supplied at all times

through 15A fuse (No. 71, located in IPDM E/R)

to CPU located in IPDM E/R, and

to tail lamp relay located in IPDM E/R,

through 15A fuse (No. 78, located in IPDM E/R)

to CPU located in IPDM E/R,

through 50A fusible link (letter F, located in fuse, fusible link and relay block)

to BCM terminal 55,

through 10A fuse [No. 21, located in fuse block (J/B)]

to BCM terminal 42,

through 10A fuse [No. 22, located in fuse block (J/B)]

to key slot terminal 1.
PKID0503E

LT-266
INTERIOR ROOM LAMP
Revision: 2007 April2007 M35/M45
INTERIOR ROOM LAMPPFP:26410
Component Parts and Harness Connector LocationNKS003T0
System DescriptionNKS003T1
BCM (body control module) controls interior lamp, room lamp timer and interior lamp battery saver.
The following signals are input to BCM:

Door lock/unlock trunk open request signal from the Intelligent Key unit via CAN communication

Key cylinder switch status signal from power window main switch via power window serial link

Door switch signal from door switches (driver side, passenger side, rear LH and RH)

IGN power supply (signal) from PDU (power distribution unit)

ACC power supply (signal) from PDU
ROOM LAMP TIMER BASIC OPERATION
Applicable lamps

Room lamp system: map lamp, foot lamp (driver side and passenger side) and personal lamp (rear LH
and rear RH).
1. When getting on the vehicle

Lamps illuminate by timer operation when driver side door or passenger side door is unlocked.*

Lamps illuminate by timer operation after any door is open and then all doors are closed.*

Timer operation stops and lamps are OFF, when driver side door is locked or the push-button ignition
switch (push switch) is turned to ACC or ON from OFF.
*: This setting can be changed by CONSULT-II. Refer to LT- 2 8 3 , "
WORK SUPPORT (INT LAMP)" .
PKID0478E