2004 INFINITI FX35 headlamp

LT-46
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
How to Proceed With Trouble DiagnosisAKS007N6
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 3 8 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 4 6 , "
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
Preliminary CheckAKS007N7
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES

Check fuses for blown-out.
Refer to LT- 4 1 , "Wiring Diagram — DTRL —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
35 W/G Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 W/R Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 L CAN− H—— —
40 R CAN− L—— —
42 L/R Battery power supply OFF — Battery voltage
49 B Ground ON — Approx. 0V
52 B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
SKIA5292E
Unit Power source Fuse and fusible link No.
BCMBatteryM
22
Ignition switch ON or START position 1
Daytime light relay Battery 36

LT-48
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
2. CHECK PARKING BRAKE SWITCH SIGNAL
1. Turn ignition switch OFF.
2. Disconnect parking brake switch connector.
3. Turn ignition switch ON.
4. Check voltage between parking brake switch harness connector
E207 terminal 1 (L) and ground.
OK or NG
OK >> Replace parking brake switch.
NG >> GO TO 3.
3. CHECK PARKING BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector
M20 terminal 23 (PU/W) and parking brake switch harness con-
nector E207 terminal 1 (L).
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
CONSULT-II Functions AKS007N8

CONSULT-II executes the following functions by combining data reception and command transmission via
the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.
CONSULT-II BASIC OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. With the ignition switch OFF, connect CONSULT-II and CON-
SULT-II CONVERTER to the data link connector, then turn igni-
tion switch ON.1 (L) – Ground : Battery voltage should exist.
SKIA5876E
1 (L) – 23 (PU/W) : Continuity should exist.
SKIA5877E
BCM diagnosis part Check item, diagnosis mode Description
HEADLAMPDATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BCM CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
PBIB1503E

LT-50
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
NOTE:
1. Vehicles without auto light system display this item, but cannot monitor it.
2. Vehicles without daytime light system display this item, but cannot monitor it.
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:
1. Vehicles without daytime light lamp system display this item, but cannot monitor it.
2. This item is displayed, but cannot monitor it. HEAD LAMP SW 1 “ON/OFF”Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 2 judged from
lighting switch signal.
HEAD LAMP SW 2 “ON/OFF”Displays status (headlamp switch 2: ON/Others: OFF) of headlamp switch 2 judged from
lighting switch signal.
LIGHT SW 1 ST “ON/OFF”Displays status (lighting switch 1st position: ON/Others: OFF) of lighting switch judged from
lighting switch signal.
AUTO LIGHT SW
NOTE 1 “ON/OFF”Displays status of the lighting switch as judged from the lighting switch signal. (AUTO posi-
tion: ON/Other than AUTO position: OFF)
PASSING SW “ON/OFF”Displays status (flash-to-pass switch: ON/Others: OFF) of flash-to-pass 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 “ON/OFF”Displays status of the back door as judged from the back door switch signal. (Door is open:
ON/Door is closed: OFF)
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.
ENGINE RUN
NOTE 2“ON/OFF” Displays status (Engine running: ON/Others: OFF) as judged from engine status signal.
PKB SW
NOTE 2“ON/OFF”Displays status (Parking brake switch: ON/Others: OFF) as judged from parking brake
switch signal.
OPTICAL SENSOR
NOTE 1
[0 - 5V] Displays “ambient light (close to 5V when light/close to 0V when dark)” judged from optical
sensor signal. Monitor item Contents
Test item Description
TAIL LAMP Allows tail lamp relay to operate by switching ON–OFF.
HEAD LAMP Allows headlamp relay to operate by switching ON−OFF.
FR FOG LAMP Allows fog lamp relay to operate by switching ON–OFF.
DTRL
NOTE 1Allow day time light lamp operate by switching ON–OFF.
CORNERING LAMP
NOTE 2—

LT-54
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
AUTO LIGHT SYSTEMPFP:28491
Component Parts and Harness Connector LocationAKS007ER
System DescriptionAKS007ES
Automatically turns on/off the parking lamps and the headlamps in accordance with ambient light.
Timing for when the 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 the ambient light. Sensitivity can be adjusted in four steps. For the details of the set-
ting, refer to LT- 6 2 , "
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

from BCM (body control module) terminal 18

to optical sensor terminal 3.
When ignition switch is turn to “ON” position, and
PKIA5268E

AUTO LIGHT SYSTEM
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When outside brightness is darker than prescribed level, input is supplied

to BCM (body control module) terminal 14

from optical sensor terminal 2.
The headlamps will then illuminate. For a description of headlamp operation, refer to LT- 5 4 , "
System Descrip-
tion" .
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 AUTO position, and the ignition switch is turned from
ON or ACC to OFF, and one of the front door is opened, the battery saver control feature is activated.
Under this condition, the headlamp remain illuminated for 5mimutes, then the headlamp are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
DELAY TIMER FUNCTION
When ignition switch ON and ACC are OFF while auto light switch is ON, BCM turn on/off headlamp. In delay
timer function, auto timer sensor power source is OFF and BCM is not turned on/off by auto sensor signal.

When the states ignition switch ON or ACC is ON and output judgment by auto light function is headlamp
ON turn to ignition switch ON or ACC are OFF and front door switch (driver side), front door switch (pas-
senger side) is ON, output judgment by auto light function should be headlamp ON for 5 minutes by tamer.
After time out, output judgment by auto light function should be headlamp OFF.

When the state is front door switch (driver side), front door switch (passenger side), rear door switch LH,
rear door switch RH or back door switch is turner to ON from OFF 45 seconds or 5 minutes while timer is
counting, timer stops, and re−start counting for 5 minutes, then auto light function judges output as head-
lamp ON. After time out, auto light function judges output as headlamp OFF.

When the states front door witch (driver side), front door switch (passenger side), rear door switch LH,
rear door switch RH or back door switch is ON turns to front door witch (driver side), front door switch
(passenger side), rear door switch LH, rear door switch RH or back door switch are OFF 45seconds or
5minute while is counting, Timer stops, and re−start counting for 45 seconds, then auto light function
judges output as head lamp ON. After timer out, auto light function judges output as head lamp OFF.

When the state is ignition switch ON or ACC is ON or auto light switch OFF while timer is counting, timer
stops counting and BCM turns on/off lamps according to headlamp function, front fog lamp function, auto
light function and headlamp battery save function.
Delay timer control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007ET
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 UnitAKS0080U
Refer to LAN-6, "CAN Communication Unit" .
Major Components and FunctionsAKS007EV
Components Functions
BCM

Turns on/off circuits of tail light and headlamp according to signals from light sensor, lighting switch
(AUTO), driver door switch, passenger door switch, rear door switch, and ignition switch (ON, OFF).
Optical sensor

Converts ambient light (lux) to voltage, and sends it to BCM. (Detects lightness of 50 to 1,300 lux)

AUTO LIGHT SYSTEM
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Revision: 2004 November 2004 FX35/FX45
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.
Terminals and Reference Values for IPDM E/RAKS007I4
33 G Combination switch output 4 ONLighting, turn, wiper OFF
Wiper dial position 4
34 W/B Combination switch output 3 ONLighting, turn, wiper OFF
Wiper dial position 4
35 W/G Combination switch output 2
ONLighting, turn, wiper OFF
Wiper dial position 4
36 W/R Combination switch output 1
38 W/L Ignition switch (ON) ON — Battery voltage
39 L CAN− H—— —
40 R CAN− L—— —
42 L/R Battery power supply OFF — Battery voltage
49 B Ground ON — Approx. 0V
52 B Ground ON — Approx. 0V
55 G Battery power supply OFF — Battery voltage
58 LBack door closure motor
(Door switch)OFF Back door switchON (open) Approx. 0V
OFF (closed) Battery voltage
62 WFront door switch
(Driver side) signalOFFFront door switch
(Driver side) ON (open) Approx. 0V
OFF (closed) Battery voltage
63 P Rear door switch LH signal OFF Rear door switch LH ON (open) Approx. 0V
OFF (closed) Battery voltage Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
SKIA5292E
SKIA5291E
SKIA5292E
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
20 LG Headlamp low (RH) ONLighting switch 2ND
positionOFF Approx. 0V
ON Battery voltage
22 RParking, license,
and tail lampONLighting switch 1ST
positionOFF Approx. 0V
ON Battery voltage
27 BR Headlamp high (RH) ONLighting switch HIGH
or PASS positionOFF Approx. 0V
ON Battery voltage

LT-62
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
How to Proceed With Trouble DiagnosisAKS007F0
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 5 4 , "
System Description" .
3. Perform the Preliminary Check. Refer to LT- 6 2 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 6 8 , "
Trouble Diagnosis Chart
by Symptom" .
5. Does the auto light system operate normally? If YES: GO TO 6. If NO: GO TO 4.
6. INSPECTION END
Preliminary CheckAKS007F1
SETTING CHANGE FUNCTIONS

Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT- 6 4 , "WORK SUPPORT" .
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES

Check fuses for blown-out.
Refer to LT- 5 7 , "Wiring Diagram — AUTO/L —" .
OK or NG
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3, "POWER SUPPLY ROUTING CIRCUIT" .
28 SB Headlamp high (LH) ONLighting switch HIGH
or PASS positionOFF Approx. 0V
ON Battery voltage
30 GY Headlamp low (LH) ONLighting switch 2ND
positionOFF Approx. 0V
ON Battery voltage
38 B Ground ON — Approx. 0V
48 L CAN− H—— —
49 R CAN− L—— —
60 B Ground ON — Approx. 0V Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
Unit Power source Fuse and fusible link No.
BCMBatteryM
22
Ignition switch ON or START position 1
Ignition switch ACC or ON position 6
IPDM E/R Battery71
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AUTO LIGHT SYSTEM
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Revision: 2004 November 2004 FX35/FX45
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 >> Check harness for open or short between BCM and
fuse.
3. CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Check ground circuit harness.
CONSULT-II Functions (BCM)AKS007I5

CONSULT-II executes the following functions by combining data reception and command transmission via
the communication line from BCM. Work support, self-diagnosis, data monitor, and active test display.
Terminals Ignition switch position
(+)
(-) OFF ACC ON
ConnectorTerminal
(Wire color)
M311 (LG/R)
Ground0VBattery
voltageBattery
voltage
38 (W/L) 0V 0VBattery
voltage
M442 (L/R)Battery
voltageBattery
voltageBattery
voltage
55 (G)Battery
voltageBattery
voltageBattery
voltage
PKIA5204E
Terminals
Continuity
Connector Terminal (Wire color)
M449 (B)
Ground Yes
52 (B)
PKIA5191E
BCM diagnosis part Check item, diagnosis mode Description
HEADLAMPWORK SUPPORT Changes the setting for each function.
DATA MONITOR Displays BCM input data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
BCM CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.