B engine INFINITI M35 2007 Factory Service Manual

LT-42
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
HEADLAMP (FOR USA) - XENON TYPE -PFP:26010
Component Parts and Harness Connector LocationNKS003OK
System DescriptionNKS003OL
The control of the headlamp system operation is dependent upon the position of the combination switch (light-
ing switch). When the lighting switch is placed in the 2ND position, the BCM (body control module) receives
input signal requesting the headlamps (and tail lamps) illuminate. 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 headlamp high and headlamp low relay coils.
These relays, when energized, direct power to the respective headlamps, which then illuminate.
PKIC1983E

LT-72
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
Aiming AdjustmentNKS003P5
PREPARATION BEFORE ADJUSTING
For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following.
1. Keep all tires inflated to correct pressures.
2. Place vehicle on flat surface.
3. Set that there is no-load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant, engine oil filled up to correct level and full fuel tank.
LOW BEAM AND HIGH BEAM
1. Turn headlamp low beam ON.
2. Use adjusting screws to perform aiming adjustment.
SKIB4152E

LT-78
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: 2007 April2007 M35/M45
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -PFP:26010
Component Parts and Harness Connector LocationNKS003P9
System DescriptionNKS003PA
DAYTIME LIGHT SYSTEM turns on daytime light lamps while driving. Daytime light lamps are not turned on if
engine is activated with parking brake on. Take off parking brake to turn on daytime light lamps. The lamps
turn off when lighting switch is in the 2ND position or AUTO position (Head lamp is “ON”) and when lighting
switch is in the PASSING position. (Daytime light lamps are not turned off only by parking brake itself.)
A parking brake signal and engine run or stop signal are sent to BCM (body control module) by CAN commu-
nication line, and control daytime light system.
PKID0500E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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OUTLINE
Power is supplied at all times

to headlamp high relay, located in IPDM E/R (intelligent power distribution module engine room) and

to headlamp low relay, located in IPDM E/R, from battery direct,

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

to CPU (central processing unit), 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 and fusible link block)

to BCM terminal 55,

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

to BCM terminal 42 and

to combination meter terminal 23,

through 10A fuse (No. 32, located in IPDM E/R)

to daytime light relay terminals 2 and 5,

through 10A fuse [No. 19, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 54,

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

to key slot terminal 1.
When the ignition switch is in ON or START position, power is supplied

to CPU, located in IPDM E/R,

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

to BCM 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. terminal 55 and 71

to push-button ignition switch (push switch) terminal 1

to key slot terminal 8

through grounds M16 and M70,

to IPDM E/R terminals 38 and 51

through grounds E22 and E43.

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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DAYTIME LIGHT OPERATION
With the engine running, the lighting switch in the OFF or AUTO position (headlamp is not illuminate) and
parking brake released, the IPDM E/R receives input request signal from BCM to turn on daytime light. This
input is communicated across the CAN communication lines. The CPU of the IPDM E/R controls the daytime
light relay coil. When energized, this relay directs power

through daytime light relay terminals 5 and 3

through front combination lamp RH terminal 2

through front combination lamp RH terminal 6

through IPDM E/R terminal 27

through 10A fuse (No. 72, located in IPDM E/R)

through 10A fuse (No. 74, located in IPDM E/R)

through IPDM E/R terminal 28

to front combination lamp LH terminal 6.
Ground is supplied

to combination lamp LH terminal 2

through grounds E22 and E43.
With power and grounds supplied, the daytime lights illuminate. The high beam headlamps are now wired in
series and illuminate at a reduced intensity.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
AUTO LIGHT OPERATION
For auto light operation, refer to LT- 11 5 , "System Description" .
CAN Communication System DescriptionNKS004HQ
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 a 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 a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitNKS004HR
Refer to LAN-50, "CAN System Specification Chart" .

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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Terminals and Reference Values for IPDM E/RNKS003PF
NOTE:
Daytime running light is operating: Lighting switch in OFF position with engine running and parking brake is released.
How to Perform Trouble DiagnosisNKS003PG
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 7 8 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 9 2 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does the headlamp 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) ON Lighting switch 2ND positionOFF Approx. 0 V
ON Battery voltage
27 BR Headlamp high (RH) ONLighting switch HIGH or PASSING
positionOFF Approx. 0 V
ON Battery voltage
Daytime running light is operating
NOTEApprox. 6.5 V
28 R/Y Headlamp high (LH) ONLighting switch HIGH or PASSING
positionOFF Approx. 0 V
ON Battery voltage
Daytime running light is operating
NOTEApprox. 6.5 V
30 R/B Headlamp low (LH) ON Lighting 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
58 SBDaytime light relay
signalONDaytime running light is operating
NOTEApprox. 0 V
Daytime running light is not operating Battery voltage

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-95
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Revision: 2007 April2007 M35/M45
NOTE:
This item is displayed, but cannot be monitored.
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
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” —
PKB SW “ON/OFF”Displays status (parking brake released: ON/ parking brake applied: OFF) of parking brake
switch judged from parking brake switch signal.
ENGINE RUN “ON/OFF”Displays status (engine running: ON/ engine stopped: OFF) of engine judged from engine run
signal.
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.Monitor item Contents
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 Allows daytime relay to operate by switching ON-OFF.
HEAD LAMP (HI, LO) Allows headlamp relay to operate by switching ON-OFF.

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-97
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Revision: 2007 April2007 M35/M45
Daytime Light Control Does Not Operate Properly (Normal Headlamps Operate
Properly)
NKS003PK
1. DAYTIME LIGHT ACTIVE TEST
With CONSULT-II
1. Select “BCM” on CONSULT-II, and select “HEAD LAMP” on
“SELECT TEST ITEM” screen.
2. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
3. Select “DAYTIME RUNNING LIGHT” on “SELECT TEST ITEM”
screen.
4. Touch “ON” screen.
5. Make sure daytime light operation.
OK or NG
OK >> GO TO 2.
NG >> GO TO 4.
2. CHECK INPUT SIGNAL
1. Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “ENGINE RUN” turns ON-OFF linked with operation
of engine running or stop.
2. Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “PKB SW” turns ON-OFF linked with operation of
parking brake switch.
OK or NG
OK >> GO TO 3.
NG >> Check BCM CAN communication system. Refer to BCS-13, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .
3. CHECK INPUT SIGNAL
1. Start engine and release parking brake. Headlamp switch OFF.
2. Select “IPDM E/R” on CONSULT-II. With data monitor, make
sure “DTRL REQ” turns ON-OFF linked with operation of park-
ing brake switch.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and
Installation of IPDM E/R" .
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" . Daytime light should operate.
PKIC0442E
Engine running : ENGINE RUN ON
Engine stop : ENGINE RUN OFF
Parking brake ON : PKB SW ON
Parking brake OFF : PKB SW OFF
PKIA7591E
Parking brake ON : DTRL REQ ON
Parking brake OFF : DTRL REQ OFF
SKIB4913E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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Revision: 2007 April2007 M35/M45
7. CHECK DAYTIME LIGHT RELAY SIGNAL
1. Connect IPDM E/R connector.
2. Install daytime light relay.
3. Turn ignition switch ON.
4. Applied parking brake.
5. Check voltage between IPDM E/R harness connector and
ground.
6. Start engine and release parking break. Headlamp switch OFF.
7. Check voltage between IPDM E/R harness connector and
ground.
OK or NG
OK >> Check connecting condition daytime light relay harness connector.
NG >> GO TO 8.
8. CHECK CAN COMMUNICATIONS
Select “BCM” by CONSULT-II, and perform self-diagnosis for “BCM”.
Displayed self-diagnosis results
NO DTC>>Replace BCM. Refer to BCS-15, "Removal and Installa-
tion of BCM" .
CAN COMM CIRCUIT>>Check BCM CAN communication system.
Refer to BCS-13, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .
Terminals
Voltage
(Approx.) (+)
(-)
IPDM E/R connector Terminal
E9 58 Ground Battery voltage
Terminals
Voltage
(Approx.) (+)
(-)
IPDM E/R connector Terminal
E9 58 Ground 0 V
SKIB4747E
PKIA7627E

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