lighting system INFINITI FX35 2004 Repair Manual

DAYTIME LIGHT SYSTEM
LT-45
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Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Values for BCMAKS007XM
Te r m i n a l
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2 GY Combination switch input 5 ONLighting, turn, wiper OFF
Wiper dial position 4
3 L/B Combination switch input 4 ONLighting, turn, wiper OFF
Wiper dial position 4
4 PU/W Combination switch input 3 ONLighting, turn, wiper OFF
Wiper dial position 4
5 Y/R Combination switch input 2
ONLighting, turn, wiper OFF
Wiper dial position 4
6 SB Combination switch input 1
32 GY/R Combination switch output 5 ONLighting, turn, wiper OFF
Wiper dial position 4
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
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E

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-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
LT-55
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Revision: 2004 November 2004 FX35/FX45
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)

LT-60
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
Terminals and Reference Values for BCMAKS007XO
Terminal
No.Wire
colorSignal nameMeasuring condition
Reference value
Ignition
switchOperation or condition
2 GY Combination switch input 5 ONLighting, turn, wiper OFF
Wiper dial position 4
3 L/B Combination switch input 4 ONLighting, turn, wiper OFF
Wiper dial position 4
4 PU/W Combination switch input 3 ONLighting, turn, wiper OFF
Wiper dial position 4
5 Y/R Combination switch input 2
ONLighting, turn, wiper OFF
Wiper dial position 4
6 SB Combination switch input 1
11 LG/R Ignition switch (ACC) ACC — Battery voltage
12 P/BFront door switch
(Passenger side) signalOFFFront door switch
(Passenger side) ON (open) Approx. 0V
OFF (closed) Battery voltage
13 P/L Rear door switch RH signal OFFRear door switch
RH ON (open) Approx. 0V
OFF (closed) Battery voltage
14 P Optical sensor signal ONWhen optical sensor is illuminated
3.1 V or more
Note
When optical sensor is not illuminated 0.6 V or less
17 Y/G Optical sensor power supply ON — Approx. 5V
18 B Sensor ground ON — Approx. 0V
32 GY/R Combination switch output 5 ONLighting, turn, wiper OFF
Wiper dial position 4
SKIA5291E
SKIA5292E
SKIA5291E
SKIA5292E
SKIA5291E

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
72
74
76
78
86

AUTO LIGHT SYSTEM
LT-65
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Revision: 2004 November 2004 FX35/FX45
5. Touch “NORMAL” or “MODE 2 - 4” of setting to be changed (CUSTOM A/LIGHT SETTING), Touch
“MODE1–8” of setting to be changed (ILL DELAY SET).
6. Touch “SETTING CHANGE”.
7. The setting will be changed and “CUSTOMIZING COMPLETED” will be displayed.
8. Touch “END”.
Work Support Setting Item

Sensitivity of auto light can be selected and set from four modes.
DATA MONITOR
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “DATA MONITOR” on “SELECT DIAG MODE” screen.
3. Touch either “ALL SIGNALS” or “SELECTION FROM MENU” on the “DATA MONITOR” screen.
4. Touch “START”.
5. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “ALL SIG-
NALS” is selected, all the items will be monitored.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop
recording, touch “STOP”.
Display Item List
Work item Description
CUSTOM A/LIGHT
SETTINGAuto light sensitivity can be changed in this mode. Sensitivity can be adjusted in four modes.

MODE 1 (Normal)/ MODE 2 (sensitive)/MODE 3 (Desensitized)/MODE4 (Insensitive)
ILL DELAY SETAuto light delay off timer period can be changed in this mode. Selects auto light delay off timer period among
eight modes.

MODE 1 (45 sec.)/MODE 2 (OFF)/MODE 3 (30 sec.)/MODE 4 (60 sec.)/MODE 5 (90 sec.)/MODE 6 (120
sec.)/MODE 7 (150 sec.)/MODE 8 (180 sec.)
ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects and monitors individual signal.
Monitor item Contents
IGN ON SW “ON/OFF”Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from the ignition switch sig-
nal.
ACC ON SW “ON/OFF” Displays “ACC (ON)/OFF, Ignition OFF (OFF)” status judged from ignition switch signal.
HI BEAM SW “ON/OFF”Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from light-
ing switch signal.
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.
TAIL LAMP SW “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)

LT-66
AUTO 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.
CONSULT-II Functions (IPDM E/R)AKS007I6
CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, self-
diagnostic results, data monitor and active test through data reception and command transmission via the
IPDM E/R CAN communication line.
CONSULT-II 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.
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—
Inspection Item, Diagnosis Mode Description
SELF-DIAGNOSTIC RESULTS The IPDM E/R performs self-diagnosis of CAN communication.
DATA MONITOR The input/output data of the IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST The IPDM E/R sends a drive signal to electronic components to check their operation.