2007 INFINITI M35 control

LT-44
HEADLAMP (FOR USA) - XENON 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) - XENON TYPE -
LT-45
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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" .
XENON HEADLAMP
Xenon type lamps are used for to the low beam headlamps. Xenon bulbs do not use a filament. Instead, they
produce light when a high voltage current is passed between two tungsten electrodes through a mixture of
xenon (an inert gas) and certain other metal halides. In addition to strong lighting power, electronic control of
the power supply gives the headlamps stable quality and tone color.
Followings are some advantages of the xenon type headlamp.

The light produced by the headlamps is white color similar to sunlight that is easy to the eyes.

Light output is nearly double that of halogen headlamps, affording increased area of illumination.

Counter-reflected luminance increases and the contrast enhances on the wet road in the rain. That makes
visibility go up more than the increase of the light volume.

Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System DescriptionNKS003OM
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 UnitNKS003ON
Refer to LAN-50, "CAN System Specification Chart" .

HEADLAMP (FOR USA) - XENON TYPE -
LT-67
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5. CHECK HEADLAMP GROUND
1. Turn ignition switch OFF.
2. Check continuity between front combination lamp (RH and LH)
harness connector and ground.
OK or NG
OK >> Check headlamp harness and connectors, ballasts (HID
control unit), and xenon bulbs. Refer to LT- 7 1 , "
Xenon
Headlamp Trouble Diagnosis" .
NG >> Repair harness or connector.
6. CHECK CIRCUIT BETWEEN IPDM E/R AND FRONT COMBINATION LAMP
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R connector.
3. Check continuity between IPDM E/R harness connector (A) and
front combination lamp (RH and LH) harness connector (B).
4. Check continuity between IPDM E/R harness connector (A) and
ground.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-31, "Removal and Installation of IPDM E/R" .
NG >> Repair harness or connector.
Front combination lamp
connectorTe r m i n a l
GroundContinuity
RH E47 4
Ye s
LH E54 4
SKIB4759E
CircuitAB
Continuity
Connector Terminal Connector Terminal
RH
E720 E47 8
Ye s
LH 30 E54 8
A
GroundContinuity
Connector Terminal
RH
E720
No
LH 30
SKIB4760E

LT-68
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
Headlamp Low Beam Does Not Illuminate (One Side)NKS003P0
1. CHECK BULB
Check ballast (HID control unit) and xenon bulb of lamp which does not illuminate. Refer to LT- 7 1 , "
Xenon
Headlamp Trouble Diagnosis" .
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part.
2. CHECK HEADLAMP INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH or LH connector.
3. Select “IPDM E/R” on CONSULT-II. Select “ACTIVE TEST” on “SELECT DIAG MODE” screen.
4. Select “LAMPS” on “SELECT TEST ITEM” screen.
5. Touch “LO” screen.
6. When headlamp low beam is operating, check voltage between
front combination lamp RH or LH harness connector and
ground.
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect front combination lamp RH or LH connector.
3. Start auto active test. Refer to PG-23, "
Auto Active Test" .
4. When headlamp low beam is operating, check voltage between front combination lamp RH or LH harness
connector and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 4.
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
connectorterminal
RH E47 8
Ground Battery voltage
LH E54 8
Terminal
Voltage
(Approx.) (+)
(-)
Front combination lamp
connectorterminal
RH E47 8
Ground Battery voltage
LH E54 8
SKIB4758E

HEADLAMP (FOR USA) - XENON TYPE -
LT-71
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General Information for Xenon Headlamp Trouble DiagnosisNKS003P2
In most cases, malfunction of xenon headlamp - "does not illuminate", "flickers" or "dark" - is caused by a mal-
functioning xenon bulb. A HID control unit or lamp housing, however, may be a cause of malfunction. Be sure
to perform trouble diagnosis following the steps described below.
Caution:NKS003P3

Installation or removal of connector must be done with lighting switch OFF.

Disconnect the battery cable from the negative terminal or remove power fuse.

When the lamp is illuminated (when lighting switch is ON), never touch harness, HID control unit, inside of
lamp, or lamp metal parts.

To check illumination, temporarily install lamp in vehicle. Be sure to connect power at vehicle side connec-
tor.

If error can be traced directly to electrical system, first check for items such as blown fuses and fusible
links, broken wires or loose connectors, dislocated terminals, and improper connections.

Never work with wet hands.

Using a tester for HID control unit circuit trouble diagnosis is prohibited.

Disassembling HID control unit or harnesses (bulb socket harness, ECM harness) is prohibited.

Immediately after illumination, light intensity and color will fluctuate, but there is nothing wrong.

When bulb has come to end of its life, brightness will drop significantly, it will flash repeatedly, or light color
will turn reddish.
Xenon Headlamp Trouble DiagnosisNKS003P4
1. CHECK 1: XENON HEADLAMP LIGHTING
Install normal xenon bulb to corresponding xenon bulb headlamp, and check if lamp lights up.
OK or NG
OK >> Replace xenon bulb.
NG >> GO TO 2.
2. CHECK 2: XENON HEADLAMP LIGHTING
Install normal HID control unit to corresponding xenon headlamp, and check if lamp lights up.
OK or NG
OK >> Replace HID control unit.
NG >> GO TO 3.
3. CHECK 3: XENON HEADLAMP LIGHTING
Install normal xenon lamp housing assembly to corresponding xenon headlamp, and check if lamp lights up.
OK or NG
OK >> Replace xenon headlamp housing assembly.
NG >> INSPECTION END

LT-76
HEADLAMP (FOR USA) - XENON TYPE -
Revision: 2007 April2007 M35/M45
Disassembly and Assembly NKS003P8
DISASSEMBLY
1. Turn plastic cap counterclockwise and unlock it.
2. Turn xenon bulb (low) socket counterclockwise and unlock it.
3. Unlock retaining spring, and remove xenon bulb (low).
4. Remove HID control unit screws.
5. Remove bracket.
6. Remove screw and ground from HID control unit.
7. Disconnect connectors from HID control unit.
8. Turn halogen bulb (high) counterclockwise and unlock it.
9. Remove halogen bulb (high) and disconnect connector it.
10. Turn front turn signal lamp bulb socket counterclockwise and unlock it.
11. Remove front turn signal lamp bulb from its socket.
12. Turn parking lamp bulb from socket counterclockwise and unlock it.
13. Remove parking lamp bulb from its socket.
14. Turn front side marker lamp bulb socket counterclockwise and unlock it.
15. Remove front side marker lamp bulb from its socket.
PKID0428E
1. Retaining spring 2. Xenon bulb (low) 3. Xenon bulb socket (low)
4. Seal packing 5. Plastic cap 6. Side marker lamp bulb socket
7. Side marker lamp bulb 8. Plastic cap 9. Seal packing
10. Halogen bulb (high) 11. Screw 12. Seal packing
13. HID control unit 14. Bracket 15. Screw
16. Front turn signal lamp bulb socket 17. Front turn signal lamp bulb 18. Headlamp housing assembly
19. Parking lamp bulb 20. Parking lamp bulb socket
: N·m (kg-m, in-lb)
: Always replace after every disassembly.

HEADLAMP (FOR USA) - XENON TYPE -
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ASSEMBLY
Note the following, and installation is the reverse order of removal.
CAUTION:

When HID control unit is removed, reinstall it securely and avoid any looseness.

After installing bulb, be sure to install plastic cap and bulb socket securely to insure watertight-
ness HID control unit mounting screw : 3.2 N·m (0.32 kg-m, 28 in-lb)

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