sensor INFINITI FX35 2005 Service Manual

DAYTIME LIGHT SYSTEM LT-51
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Revision: 2005 July 2005 FX
NOTE:
1. Vehicles without auto light system display this item, but cannot be monitored.
2. Vehicles without daytime light system display this item, but cannot be monitored.
3. This item is displayed, but cannot be monitored.
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 be tested.
2. This item is displayed, but cannot be tested.
BACK DOOR SW “ON/OFF”
Displays status of back door as judged from 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 sig-
nal.
PKB SW
NOTE 2“ON/OFF” Displays status (Parking brake switch: ON/Others: OFF) as judged from parking
brake switch signal.
CARGO LAMP SW
NOTE 3 “OFF” —
OPTICAL SENSOR
NOTE 1 “0 - 5V” Displays “outside brightness (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 front fog lamp relay to operate by switching ON −OFF
DTRL
NOTE 1Allows daytime light lamp operate by switching ON −OFF
CORNERING LAMP
NOTE 2—
CARGO LAMP
NOTE 2—

AUTO LIGHT SYSTEM LT-55
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Revision: 2005 July 2005 FX
AUTO LIGHT SYSTEMPFP:28491
Component Parts and Harness Connector LocationAKS007ER
System DescriptionAKS007ES
Automatically turns ON/OFF 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 3 , "
SETTING CHANGE FUNCTIONS" .
Optical sensor control mode can be changed by the function setting of CONSULT-II or display.
Optical sensor, power is supplied

from BCM (body control module) terminal 17

to optical sensor terminal 1.
Optical sensor, ground is supplied

to optical sensor terminal 3

through BCM terminal 18.
PKIB3474E

LT-56
AUTO LIGHT SYSTEM
Revision: 2005 July 2005 FX
When ignition switch is turn to ON position, and
When outside brightness is darker than prescribed level, input is supplied

from BCM terminal 14

to optical sensor terminal 2
The headlamps will then illuminate. For a description of headlamp operation, Refer to LT- 5 5 , "
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 5 mimutes, 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
Delay timer function carries out a function that BCM activates the timer and controls lights out of headlamps by
door switch signal and lightning switch signal when turning the Ignition switch OFF while it is ON and head-
lamps are ON by the auto light function.
Timer types are a 5-minute timer and a 45-second timer

When opening any door (door switch is ON), the 5-minute timer starts and then headlamps go out five
minutes later

When all the doors are closed (from door switch ON to OFF), the 45-second timer starts and then head-
lamps go out forty-five seconds later. If any door is opened (door switch ON) while the 45-second timer is
in operation, the 5-minute timer starts again

The timer stops when turning on the ignition switch or turning off the auto light switch under the above
conditions.
Delay timer control mode can be changed by the function setting of CONSULT-II or display.
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-30, "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 outside brightness (lux) to voltage, and sends it to BCM. (Detects brightness of 50 to 1,300 lux)

AUTO LIGHT SYSTEM LT-61
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Terminals and Reference Values for BCMAKS007XO
Te r m i n a l
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
2 GY Combination switch input 5 ON Lighting, turn, wiper OFF
Wiper dial position 4
3 L/B Combination switch input 4 ON Lighting, turn, wiper OFF
Wiper dial position 4
4 PU/W Combination switch input 3
5 Y/R Combination switch input 2
6 SB Combination switch input 1
11 LG/R Ignition switch (ACC) ACC — Battery voltage
12 P/B Front door switch
(Passenger side) signal OFFFront door switch
(Passenger side) ON (open) Approx. 0V
OFF (closed) Battery voltage
13 P/L Rear door switch RH signal OFF Rear door switch
RH ON (open) Approx. 0V
OFF (closed) Battery voltage
14 P Optical sensor signal ON When 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 ON Lighting, turn, wiper OFF
Wiper dial position 4
33 G Combination switch output 4 ON Lighting, turn, wiper OFF
Wiper dial position 4
34 W/B Combination switch output 3
35 W/G Combination switch output 2
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 L Back door closure motor
(Door switch) OFF Back door switch ON (open) Approx. 0V
OFF (closed) Battery voltage
PKIB3468E
PKIB3469E
PKIB3470E
PKIB3471E

LT-62
AUTO LIGHT SYSTEM
Revision: 2005 July 2005 FX
NOTE:
Optical sensor must be securely subjected to work lamp light. If optical sensor is insufficiently illuminated, the measured val ue may not
satisfy standard.
Terminals and Reference Values for IPDM E/RAKS007I4
How to Proceed With Trouble DiagnosisAKS007F0
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 5 5 , "
System Description" .
3. Perform Preliminary Check. Refer to LT- 6 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 7 0 , "
Symptom Chart" .
5. Does auto light system operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
62 W Front door switch
(Driver side) signal OFFFront 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
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
Terminal
No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
20 LG Headlamp low (RH) ON Lighting switch 2ND
position OFF Approx. 0V
ON Battery voltage
22 R Parking, license,
and tail lamp ONLighting switch 1ST
position OFF Approx. 0V
ON Battery voltage
27 BR Headlamp high (RH) ON Lighting switch HIGH
or PASS position OFF Approx. 0V
ON Battery voltage
28 SB Headlamp high (LH) ON Lighting switch HIGH
or PASS position OFF Approx. 0V
ON Battery voltage
30 GY Headlamp low (LH) ON Lighting switch 2ND
position OFF 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

AUTO LIGHT SYSTEM LT-67
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NOTE:
1. Vehicles without auto light system display this item, but cannot be monitored.
2. Vehicles without daytime light system display this item, but cannot be monitored.
3. This item is displayed, but cannot be monitored.
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
HEAD LAMP SW 1 “ON/OFF” Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 1 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 or 2ND position: ON/Others: OFF) of lighting switch
judged from lighting switch signal.
AUTO LIGHT SW
NOTE 1 “ON/OFF” Displays status of lighting switch as judged from lighting switch signal. (AUTO position: 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 driver door as judged from driver door switch signal. (Door is open: ON/
Door is closed: OFF)
DOOR SW - AS “ON/OFF” Displays status of passenger door as judged from passenger door switch signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - RR “ON/OFF” Displays status of rear door as judged from rear door switch (RH) signal. (Door is open: ON/
Door is closed: OFF)
DOOR SW - RL “ON/OFF” Displays status of rear door as judged from rear door switch (LH) signal. (Door is open: ON/
Door is closed: OFF)
BACK DOOR SW “ON/OFF” Displays status of back door as judged from 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.
CARGO LAMP SW
NOTE 3 “OFF” —
OPTICAL SENSOR
NOTE 1 “0 - 5V” Displays “outside brightness (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 1Allows day time light lamp operate by switching ON −OFF.
CORNERING LAMP
NOTE 2—
CARGO LAMP
NOTE 2—

LT-70
AUTO LIGHT SYSTEM
Revision: 2005 July 2005 FX
Symptom ChartAKS007F3
Lighting Switch InspectionAKS007F4
1. CHECK LIGHTING SWITCH INPUT SIGNAL
With CONSULT-II
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “AUTO LIGHT SW” turns ON–OFF linked with operation
of lighting switch.
Without CONSULT-II
Refer to LT- 11 5 , "
Combination Switch Inspection" .
OK or NG
OK >> INSPECTION END
NG >> Check combination switch (lighting switch). Refer to LT-
11 5 , "Combination Switch Inspection" .
Trouble phenomenon Malfunction system and reference

Parking lamps and headlamps will not illuminate when out-
side of the vehicle becomes dark. (Lighting switch 1ST
position and 2ND position operate normally.)

Parking lamps and headlamp will not go out when outside
of the vehicle becomes light. (Lighting switch 1ST position
and 2ND position operate normally.)

Headlamps go out when outside of the vehicle becomes
light, but parking lamps stay on.

Refer to LT- 6 6 , "WORK SUPPORT" .

Refer to LT- 7 0 , "Lighting Switch Inspection" .

Refer to LT- 7 1 , "Optical sensor System Inspection" .
If above systems are normal, replace BCM.
Parking lamps illuminate when outside of the vehicle
becomes dark, but headlamps stay off. (Lighting switch 1ST
position and 2ND position operate normally.)

Refer to LT- 6 6 , "WORK SUPPORT" .

Refer to LT- 7 1 , "Optical sensor System Inspection" .
If above systems are normal, replace BCM.
Auto light adjustment system will not operate. (Lighting switch
AUTO, 1ST position and 2ND position operate normally.)

Refer to LT- 7 1 , "Optical sensor System Inspection" .
If above system is normal, replace BCM.
Auto light adjustment system of combination meter will not
operate.

CAN communication line inspection between BCM and combina-
tion meter. Refer to BCS-15, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .
Shut off delay feature will not operate.

CAN communication line inspection between BCM and combina-
tion meter. Refer to BCS-15, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .

Refer to BL-42, "Check Door Switch" .
If above system is normal, replace BCM.
When lighting switch is AUTO
position : AUTO LIGHT SW ON
PKIA7595E

AUTO LIGHT SYSTEM LT-71
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Optical sensor System InspectionAKS007F5
1. CHECK OPTICAL SENSOR INPUT SIGNAL
With CONSULT-II
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “OPTICAL SENSOR”, check difference in the voltage
when auto light sensor is illuminated and not illuminated.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If
optical sensor is insufficiently illuminated, the measured value
may not satisfy the standard.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector M3 terminal 14 (P) and ground.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If
optical sensor is insufficiently illuminated, the measured value
may not satisfy the standard.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and optical sensor connector.
3. Check continuity (open circuit) between BCM harness connector M3 terminal 17 (Y/G) and optical sensor harness connector M37
terminal 1 (Y/G).
4. Check continuity (short circuit) between BCM harness connector M3 terminal 17 (Y/G) and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector. Illuminated
OPTICAL SENSOR : 3.1V or more
Not illuminated
OPTICAL SENSOR : 0.6V or less
Illuminated
OPTICAL SENSOR : 3.1V or more
Not illuminated
OPTICAL SENSOR : 0.6V or less
PKIA7596E
PKIB6163E
17 (Y/G) – 1 (Y/G) : Continuity should exist.
17 (Y/G) – Ground : Continuity should not exist.
SKIA5891E

LT-72
AUTO LIGHT SYSTEM
Revision: 2005 July 2005 FX
3. CHECK OPTICAL SENSOR SIGNAL CIRCUIT
1. Check continuity (open circuit) between BCM harness connector M3 terminal 14 (P) and optical sensor harness connector M37
terminal 2 (P).
2. Check continuity (short circuit) between BCM harness connector M3 terminal 14 (P) and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK OPTICAL SENSOR GROUND CIRCUIT
1. Check continuity (open circuit) between BCM harness connector M3 terminal 18 (B) and optical sensor harness connector M37
terminal 3 (B).
2. Check continuity (short circuit) between BCM harness connector M3 terminal 18 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK OPTICAL SENSOR VOLTAGE
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M3 terminal 17 (Y/G) and ground.
OK or NG
OK >> Replace optical sensor.
NG >> Replace BCM. Refer to BCS-16, "
Removal and Installa-
tion of BCM" .
14 (P) – 2 (P) : Continuity should exist.
14 (P) – Ground : Continuity should not exist.
SKIA5892E
18 (B) – 3 (B) : Continuity should exist.
18 (B) – Ground : Continuity should not exist.
SKIA5893E
17 (Y/G) – Ground : Approx. 5V
SKIA5894E

AUTO LIGHT SYSTEM LT-73
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Removal and Installation of Optical SensorAKS007F6
REMOVAL
1. Insert a screwdriver or similar tool and remove front defroster
grill (LH). Refer to IP-15, "
(V) Front Defroster Grille (RH/LH)" in
“IP” section.
2. Disconnect optical sensor connector.
3. Remove optical sensor.
INSTALLATION
Installation is the reverse order of removal.
PKIA5275E