INFINITI M35 2007 Factory Service Manual

LT-10
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
HEADLAMP OPERATION
Low Beam Operation
With the lighting switch in 2ND position, the BCM receives input signal requesting the headlamps to illuminate.
This input signal is communicated to the IPDM E/R across the CAN communication lines. The CPU located in
the IPDM E/R controls the headlamp low relay coil, which when energized, directs power

through 15A fuse (No. 76, located in IPDM E/R)

through IPDM E/R terminal 20

to front combination lamp RH terminal 8,

through 15A fuse (No. 86, located in IPDM E/R)

through IPDM E/R terminal 30

to front combination lamp LH terminal 8.
Ground is supplied

to front combination lamp RH terminal 4

to front combination lamp LH terminal 4

through grounds E22 and E43.
With power and ground supplied, low beam headlamps illuminate.
High Beam Operation/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH or PASS position, the BCM receives input signal
requesting the headlamp high beams and low beams to illuminate. This input signal is communicated to the
IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls the headlamp
high relay coil and low relay coil, which when energized, directs power

through 15A fuse (No. 76, located in IPDM E/R)

through IPDM E/R terminal 20

to front combination lamp RH terminal 8,

through 15A fuse (No. 86, located in IPDM E/R)

through IPDM E/R terminal 30

to front combination lamp LH terminal 8,

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

through IPDM E/R terminal 27

to front combination lamp RH terminal 6,

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 front combination lamp RH terminal 4

to front combination lamp LH terminal 4

to front combination lamp RH terminal 2

to front combination lamp LH terminal 2

through grounds E22 and E43.
With power and ground supplied, the high beam and low beam headlamps illuminate.
The unified meter and A/C amp. that received the high beam request signal by BCM across the CAN commu-
nication makes a high beam indicator lamp turn on in the combination meter.

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
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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), 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.
AUTO LIGHT OPERATION
Refer to LT- 11 5 , "System Description" .
CAN Communication System DescriptionNKS003O0
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 UnitNKS003O1
Refer to LAN-50, "CAN System Specification Chart" .

LT-12
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
SchematicNKS003O2
TKWT3350E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
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Wiring Diagram — H/LAMP —NKS003O3
TKWT3351E

LT-14
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
TKWT5252E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-15
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TKWT5253E

LT-16
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
TKWT3354E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-17
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TKWT5061E

LT-18
HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
Revision: 2007 April2007 M35/M45
TKWT5274E

HEADLAMP (FOR USA) - CONVENTIONAL TYPE -
LT-19
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Terminals and Reference Values for BCMNKS003O4
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 -
nal No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2L/RCombination
switch input 5ONLighting, turn, wiper
switch
(Wiper dial position 4)Lighting switch HI beam
(Operates only HI beam
switch)
Approx. 1.0 V
Lighting switch 2ND
Approx. 2.0 V
OFF Approx. 0 V
3 O/LCombination
switch input 4ONLighting, turn, wiper
switch
(Wiper dial position 4)
Any of several con-
ditions below

Lighting switch 2ND

Lighting switch
PASSING (Operates
only PASSING switch)
Approx. 1.0 V
OFF Approx. 0 V
11 VIgnition switch
(ACC)ACC — Battery voltage
PKIB4957J
PKIB4953J
PKIB4957J