INFINITI M35 2007 Factory Service Manual

LT-80
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
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 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 (When Daytime Light Does Not Operate)/Flash-to-Pass Operation
With the lighting switch in 2ND position and placed in HIGH BEAM or PASSING position, the BCM receives
input signal requesting headlamp high beams to illuminate. High beam request signal is communicated to the
IPDM E/R across the CAN communication lines. The CPU located in the IPDM E/R controls headlamp high
relay coil and low relay coil, which when energized, directs power

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

through IPDM E/R terminal 27

through front combination lamp RH terminals 6 and 2

to daytime light relay terminal 3,

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

through IPDM E/R terminal 28

to front combination lamp LH terminal 6,

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 daytime light relay terminal 4

to front combination lamp RH terminal 4

to front combination lamp LH terminal 2

to front combination lamp LH terminal 4

through grounds E22 and E43.
With the power and ground supplied, the headlamp high beam and low headlamp illuminate.
High beam indicator illuminates when combination meter receives input signal requesting high beam indicator
to illuminate. This is communicated to BCM across the CAN communication lines.

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-81
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
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" .

LT-82
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: 2007 April2007 M35/M45
SchematicNKS003PC
TKWT3362E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-83
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
Wiring Diagram — DTRL —NKS003PD
TKWT3363E

LT-84
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: 2007 April2007 M35/M45
TKWT5258E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-85
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
TKWT5259E

LT-86
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: 2007 April2007 M35/M45
TKWT3366E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-87
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
TKWT5063E

LT-88
HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
Revision: 2007 April2007 M35/M45
TKWT5276E

HEADLAMP (FOR CANADA) - DAYTIME LIGHT SYSTEM -
LT-89
C
D
E
F
G
H
I
J
L
MA
B
LT
Revision: 2007 April2007 M35/M45
Terminals and Reference Values for BCMNKS003PE
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
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
34 LCombination
switch output 3ONLighting, turn, wiper
switch
(Wiper dial position 4)
Any of several con-
ditions below

Lighting switch 2ND

Lighting switch HI
beam (Operates only
HI beam switch)
Approx. 1.2 V
OFF
Approx. 7.0 - 7.5 V
PKIB4957J
PKIB4953J
PKIB4957J
PKIB4958J
PKIB4960J