ignition INFINITI M35 2007 Factory Service Manual

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-113
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Revision: 2007 April2007 M35/M45
Headlamps Do Not Turn OFFNKS003PQ
1. CHECK HEADLAMP TURN OFF
Make sure that lighting switch is OFF. And make sure is headlamp turns off when ignition switch is turned OFF.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. CHECK COMBINATION SWITCH INPUT SIGNAL
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “HEAD LAMP SW 1” and “HEAD LAMP SW 2” turns ON-
OFF linked with operation of lighting switch.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and
Installation of IPDM E/R" .
NG >> Check lighting switch. Refer to LT- 2 3 9 , "
Combination
Switch Inspection" .
3. CHECK CAN COMMUNICATIONS BETWEEN BCM AND IPDM E/R
Select “BCM” by CONSULT-II, and perform self-diagnosis for “BCM”.
Display of self-diagnosis results
NO DTC>> Replace IPDM E/R. Refer to PG-31, "Removal and
Installation of IPDM E/R" .
CAN COMM CIRCUIT>> Refer to BCS-13, "
CAN Communication
Inspection Using CONSULT-II (Self-Diagnosis)" . When lighting switch is OFF
position: HEAD LAMP SW 1 OFF
: HEAD LAMP SW 2 OFF
PKIA7011E
PKIA7627E

AUTO LIGHT SYSTEM
LT-115
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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-124
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003Q5
CAUTION:

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.

Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to LT- 2 3 8 , "
DATA MONITOR" .
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
4R/GCombination
switch input 3ONLighting, turn, wiper
OFF
(Wiper dial position 4)Lighting switch AUTO
Approx. 1.0 V
OFF Approx. 0 V
11 VIgnition switch
(ACC)ACC — Battery voltage
12 PFront door switch
passenger side
signalOFFFront door switch pas-
senger sideON (open) Approx. 0 V
OFF (closed)
Approx. 8.0 - 8.5 V
13 O/LRear door switch
RH signalOFF Rear door switch RHON (open) Approx. 0 V
OFF (closed)
Approx. 8.5 - 9.0 V
14 W/BOptical sensor
signalONWhen optical sensor is illuminated.
3.1 V or more
NOTE
When optical sensor is not illuminated. 0.6 V or less
17 YOptical sensor
power supplyON — Approx. 5 V
18 BOptical sensor
groundON — Approx. 0 V
PKIB4957J
SKIB3419J
SKIB4865E

AUTO LIGHT SYSTEM
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NOTE:
Optical sensor must be securely subjected to work lamp light. If the optical sensor is insufficiently illuminated, the measured value may
not satisfy standard.33 GRCombination
switch output 4ONLighting, turn, wiper
OFF
(Wiper dial position 4)Lighting switch AUTO
Approx. 1.2 V
OFF
Approx. 7.0 - 7.5 V
38 WIgnition switch
(ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 PBattery power
supplyOFF — Battery voltage
52 B Ground ON — Approx. 0 V
55 WBattery power
supplyOFF — Battery voltage
62 VFront door switch
driver side signalOFFFront door switch
driver sideON (open) Approx. 0 V
OFF (closed)
Approx. 7.5 - 8.0 V
63 R/GRear door switch
LH signalOFF Rear door switch LHON (open) Approx. 0V
OFF (closed)
Approx. 7.5 - 8.0 V Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
PKIB4958J
PKIB4960J
PKIB4960J
PKIB4960J

LT-126
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for IPDM E/RNKS003Q6
How to Perform Trouble DiagnosesNKS003Q7
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 11 5 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 1 2 7 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 1 3 0 , "
Symptom Chart" .
5. Does the auto light system operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END.
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
20 R Headlamp low (RH) ONLighting switch 2ND
positionOFF Approx. 0 V
ON Battery voltage
21 R/LParking, license plate,
and tail lampONLighting switch 1ST
positionOFF Approx. 0 V
ON Battery voltage
27 BR Headlamp high (RH) ONLighting switch HIGH
or PASSING positionOFF Approx. 0 V
ON Battery voltage
28 R/Y Headlamp high (LH) ONLighting switch HIGH
or PASSING positionOFF Approx. 0 V
ON Battery voltage
30 R/B Headlamp low (LH) ONLighting switch 2ND
positionOFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
49 L CAN − H— — —
50 P CAN − L— — —
51 B Ground ON — Approx. 0 V

AUTO LIGHT SYSTEM
LT-127
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Revision: 2007 April2007 M35/M45
Preliminary CheckNKS003Q8
SETTING CHANGE FUNCTIONS

Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT- 1 2 8 , "WORK SUPPORT" .
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSE AND FUSIBLE LINK
Check for blown fuses and fusible link.
Refer to LT-118, "Wiring Diagram — AUTO/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse
or fusible link. Refer to PG-3, "
POWER SUPPLY ROUTING CIRCUIT" .
2. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector.
3. Check voltage between BCM harness connector and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCMBatteryF
21
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
IPDM E/R Battery71
72
74
76
78
86
Terminal Ignition switch position
(+)
(-) OFF ACC ON
BCM
connectorTerminal
M111
GroundApprox.
0VBattery
voltageBattery
voltage
38Approx.
0VApprox.
0VBattery
voltage
M242Battery
voltageBattery
voltageBattery
voltage
55Battery
voltageBattery
voltageBattery
voltage
PKIA5204E

AUTO LIGHT SYSTEM
LT-129
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DATA MONITOR
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on the “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “ALL SIG-
NALS” is selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
NOTE:
This item is displayed, but cannot be monitored.ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects items and monitor them.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from the ignition switch signal.
ACC ON SW “ON/OFF” Displays “ACC (ON)/OFF, Ignition OFF (OFF)” status judged from ignition switch signal.
KEY ON SW “ON/OFF”Displays “Intelligent Key inserted into key slot (ON)/Intelligent Key removed from key slot
(OFF)” status judged from the key switch signal.
TURN SIGNAL R “ON/OFF” Displays status (turn right: ON/others: OFF) as judged from lighting switch signal.
TURN SIGNAL L “ON/OFF” Displays status (turn left: ON/others: OFF) as judged from lighting switch signal.
HI BEAM SW “ON/OFF”Displays status (high beam switch: ON/others: OFF) of high beam switch judged from lighting
switch signal.
HEAD LAMP SW 1 “ON/OFF”Displays status (headlamp switch 1: ON/others: OFF) of headlamp switch 1 judged from light-
ing switch signal.
HEAD LAMP SW 2 “ON/OFF”Displays status (headlamp switch 2: ON/others: OFF) of headlamp switch 2 judged from light-
ing switch signal.
TAIL LAMP SW “ON/OFF”Displays status (lighting switch 1ST or 2ND position: ON/others: OFF) of lighting switch judged
from lighting switch signal.
AUTO LIGHT SW “ON/OFF”Displays status of the lighting switch as judged from the lighting switch signal. (AUTO position:
ON/other than AUTO position: OFF)
PASSING SW “ON/OFF”Displays status (flash-to-passing switch: ON/others: OFF) of flash-to-passing switch judged
from lighting switch signal.
FR FOG SW “ON/OFF”Displays status (front fog lamp switch: ON/others: OFF) of front fog lamp switch judged from
lighting switch signal.
DOOR SW - DR “ON/OFF”Displays status of the driver door as judged from the driver door switch signal. (door is open:
ON/door is closed: OFF)
DOOR SW - AS “ON/OFF”Displays status of the passenger door as judged from the passenger door switch signal. (door
is open: ON/door is closed: OFF)
DOOR SW - RR “ON/OFF”Displays status of the rear door as judged from the rear door switch (RH) signal. (door is open:
ON/door is closed: OFF)
DOOR SW - RL “ON/OFF”Displays status of the rear door as judged from the rear door switch (LH) signal. (door is open:
ON/door is closed: OFF)
BACK DOOR SW
NOTE “OFF” —
I - KEY LOCK “ON/OFF” Displays “locked (ON)/other (OFF)” status, determined from lock signal.
OPTICAL SENSOR “0 - 5V” Displays “outside brightness (close to 5 V when light/close to 0 V when dark)” judged from
optical sensor signal.
VEHICLE SPEED “km/h” Displays vehicle speed as judged from vehicle speed signal.

LT-130
AUTO LIGHT SYSTEM
Revision: 2007 April2007 M35/M45
ACTIVE TEST
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Touch item to be tested and check operation of the selected item.
4. During the operation check, touching “BACK” deactivates the operation.
Display Item List
NOTE:
This item is tested only for CANADA models.
Symptom ChartNKS003QA
Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON-OFF.
FR FOG LAMP Allows front fog lamp relay to operate by switching ON-OFF.
DAYTIME RUNNING LIGHT
NOTEAllows daytime light relay to operate by switching ON-OFF.
HEAD LAMP (HI, LO) Allows headlamp relay to operate by switching ON-OFF.
Phenomenon Malfunction system and reference

Parking lamps and headlamps will not illuminate when outside
of the vehicle becomes dark. (Lighting switch 1ST position and
2ND position operate normally.)

Parking lamps and headlamp will not go out when outside of the
vehicle becomes light. (Lighting switch 1ST position and 2ND
position operate normally.)

Headlamps go out when outside of the vehicle becomes light,
but parking lamps stay on.

Refer to LT-128, "WORK SUPPORT" .

Refer to LT-131, "Lighting Switch Inspection" .

Refer to LT-131, "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
Parking lamps illuminate when outside of the vehicle becomes
dark, but headlamps stay off. (Lighting switch 1ST position and
2ND position operate normally.)

Refer to LT-128, "WORK SUPPORT" .

Refer to LT-131, "Optical Sensor System Inspection" .
If above systems are normal, replace BCM.
With the ignition key in ACC position, headlamps, clearance
lamps, tail lamps, etc. will not go out when the driver's door is
opened.

Refer toBL-94, "Check Door Switch" .
If above system is normal, replace BCM.
Auto light adjustment system will not operate. (Lighting switch
AUTO, 1ST position and 2ND position operate normally.)

Refer to LT-131, "Optical Sensor System Inspection" .
If above system is normal, replace BCM.
Auto light adjustment system of combination meter will not oper-
ate.

CAN communication line inspection between BCM and combi-
nation meter: Refer to BCS-13, "
CAN Communication Inspec-
tion Using CONSULT-II (Self-Diagnosis)" .

AUTO LIGHT SYSTEM
LT-131
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Revision: 2007 April2007 M35/M45
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