2006 INFINITI FX35 ignition switch

DAYTIME LIGHT SYSTEM LT-51
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Revision: 2006 December 2006 FX35/FX45
CONSULT-II Functions (BCM)NKS002W5
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
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 “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “ALL SIG- NALS” is selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop recording, touch “STOP”.
Display Item List
BCM diagnosis part Diagnosis mode Description
HEADLAMP 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 SELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ALL SIGNALS Monitors all the signals.
SELECTION FROM MENU Selects items and monitors them.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch
signal.
ACC ON SW “ON/OFF” Displays “ACC (ON)/OFF, Ignition OFF (OFF)” status judged from ignition switch sig-
nal.
HI BEAM SW “ON/OFF” Displays status (high beam switch: ON/Others: OFF) of high beam switch judged from
lighting switch signal.
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 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.
RR FOG SW
NOTE 3“OFF” —
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)

DAYTIME LIGHT SYSTEM LT-53
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Revision: 2006 December 2006 FX35/FX45
Daytime Light Control Does Not Operate ProperlyNKS002W6
1. CHECK DAYTIME LIGHT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Remove daytime light relay.
3. Check voltage between daytime light relay harness connector E15 terminal 2 and ground.
4. Check voltage between daytime light relay harness connector E15 terminal 5 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connector.
2. CHECK DAYTIME LIGHT RELAY
Apply battery voltage to between daytime light relay terminal 1, 2
and check continuity between terminal 3 and 5.
OK or NG
OK >> GO TO 3.
NG >> Replace daytime light relay.
3. CHECK DAYTIME LIGHT RELAY CIRCUIT
1. Disconnect parking lamp RH and LH connectors.
2. Check continuity between daytime light relay connector E15 ter- minal 3 and parking lamp RH harness connector E23 terminal 1.
3. Check continuity between daytime light relay connector E15 ter- minal 3 and parking lamp LH harness connector E43 terminal 1.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector. 2 – Ground : Battery voltage.
5 – Ground : Battery voltage.
PKIA5274E
3 – 5 : Continuity should exist.
PKIA5214E
3 – 1 : Continuity should exist.
3 – 1 : Continuity should exist.
PKIC9687E

AUTO LIGHT SYSTEM LT-57
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Revision: 2006 December 2006 FX35/FX45
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 6 , "
System Descrip-
tion" .
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
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 5 min-
utes later

When all the doors are closed (from door switch ON to OFF), the 45 second timer starts and then head-
lamps go out 45 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 DescriptionNKS002WD
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 UnitNKS002WE
Refer to LAN-32, "CAN Communication Unit" .
Major Components and FunctionsNKS002WF
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 800 to 2,500 lux)

LT-62
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
Terminals and Reference Values for BCMNKS002WI
Terminal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
4L/B Combination switch
input 3 ON Lighting, turn, wiper
switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Lighting switch
AUTO
Approx. 1.0 V
11 LG Ignition switch (ACC) ACC — Battery voltage
12 P/B Front door switch
(Passenger side) signal OFFFront door switch
(Passenger side) ON (open) Approx. 0 V
OFF (closed) Battery voltage
13 P/L Rear door switch RH
signal OFF Rear door switch RH ON (open) Approx. 0 V
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. 5 V
18 B Sensor ground ON — Approx. 0 V
33 G Combination switch
output 4 ON Lighting, turn, wiper
switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.2 V
Lighting switch
AUTO
Approx. 1.2 V
38 W/L Ignition switch (ON) ON — Battery voltage
39 L CAN − H— — —
40 P CAN − L— — —
42 L/R Battery power supply OFF — Battery voltage
49 B Ground ON — Approx. 0 V
52 B Ground ON — Approx. 0 V
55 G Battery power supply OFF — Battery voltage
58 L Back door closure
motor (Door switch) OFF Back door switch ON (open) Approx. 0 V
OFF (closed) Battery voltage
PKIB4959J
PKIB4960J
PKIB4958J

AUTO LIGHT SYSTEM LT-63
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Revision: 2006 December 2006 FX35/FX45
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/RNKS002WJ
How to Proceed With Trouble DiagnosisNKS002WK
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 5 6 , "
System Description" .
3. Perform Preliminary Check. Refer to LT- 6 4 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction. Refer to LT- 6 9 , "
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. 0 V
OFF (closed) Battery voltage
63 P Rear door switch LH
signal OFF Rear door switch LH ON (open) Approx. 0 V
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. 0 V
ON Battery voltage
22 R Parking, license,
and tail lamp ONLighting switch 1ST
position OFF Approx. 0 V
ON Battery voltage
27 BR Headlamp high (RH) ON Lighting switch HIGH
or PASS position OFF Approx. 0 V
ON Battery voltage
28 SB Headlamp high (LH) ON Lighting switch HIGH
or PASS position OFF Approx. 0 V
ON Battery voltage
30 GY Headlamp low (LH) ON Lighting switch 2ND
position OFF Approx. 0 V
ON Battery voltage
38 B Ground ON — Approx. 0 V
48 L CAN − H—— —
49 R CAN − L—— —
60 B Ground ON — Approx. 0 V

LT-64
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
Preliminary CheckNKS002WL
SETTING CHANGE FUNCTIONS
Sensitivity of auto light system can be adjusted using CONSULT-II. Refer to LT- 6 6 , "WORK SUPPORT" .
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to LT- 5 9 , "
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" .
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 >> Repair harness or connector.
Unit Power source Fuse and fusible link No.
BCM Battery
M
22
Ignition switch ON or START position 1 Ignition switch ACC or ON position 6
IPDM E/R Battery 71
72
74
76
86
(+) (-) Ignition switch position
BCM con- nector Terminal OFF ACC ON
M3 11
Ground Approx. 0 V
Battery
voltage Battery
voltage
38 Approx. 0 V Approx. 0 V Battery
voltage
M4 42
Battery
voltage Battery
voltage Battery
voltage
55 Battery
voltage Battery
voltage Battery
voltage
PKIB5197E

LT-66
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
CONSULT-II Functions (BCM)NKS002WM
CONSULT-II can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-II BASIC OPERATION
Refer to GI-38, "CONSULT-II Start Procedure" .
WORK SUPPORT
Operation Procedure
1. Touch “HEAD LAMP” on “SELECT TEST ITEM” screen.
2. Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.
3. Touch “CUSTOM A/LIGHT SETTING” or “ILL DELAY SET” on “SELECT WORK ITEM” screen.
4. Touch “START”.
5. Touch “NORMAL” or “MODE 2 – 4” of setting to be changed (CUSTOM A/LIGHT SETTING), Touch “MODE 1 – 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
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 “SELECT MONITOR ITEM” screen.
4. When “SELECTION FROM MENU” is selected, touch individual items to be monitored. When “ALL SIG- NALS” is selected, all the items will be monitored.
5. Touch “START”.
6. Touch “RECORD” while monitoring, then the status of the monitored item can be recorded. To stop recording, touch “STOP”.
Display Item List
BCM diagnosis part Diagnosis mode Description
HEADLAMP WORK 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 SELF-DIAG RESULTS BCM performs self-diagnosis of CAN communication.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
Work item Description
CUSTOM A/LIGHT SETTING Auto 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 SET Auto 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 items and monitors them.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch signal.
ACC ON SW “ON/OFF” Displays “ACC (ON)/OFF, Ignition OFF (OFF)” status judged from ignition switch signal.

AUTO LIGHT SYSTEM LT-69
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Revision: 2006 December 2006 FX35/FX45
NOTE:
Perform monitoring of IPDM E/R data with ignition switch ON. When ignition switch is at ACC, the display may
not be correct.
ACTIVE TEST
Operation Procedure
1. Touch “ACTIVE TEST” on “SELECT DIAG MODE” screen.
2. Touch item to be tested, and check operation.
3. Touch “START”.
4. Touch “STOP” while testing to stop the operation.
Symptom ChartNKS002WO
Lighting Switch InspectionNKS002WP
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- 1 2 0 , "
Combination Switch Inspection" .
OK or NG
OK >> INSPECTION END
NG >> Check combination switch (lighting switch). Refer to LT-
120, "Combination Switch Inspection" .
Te s t i t e m CONSULT-II
screen display Description
Headlamp relay (HI, LO) output LAMPS Allows headlamp relay (HI, LO) to operate by switching operation (OFF, HI ON,
LO ON) at your option (Head lamp high beam repeats ON-OFF every 1 second).
Front fog lamp relay output Allows fog lamp relay to operate by switching operation ON-OFF at your option.
Tail lamp relay output TAIL LAMP Allows tail lamp relay to operate by switching operation ON-OFF at your option.
Trouble phenomenon Malfunction system and reference

Parking, license plate, side marker and tail lamps and
headlamps will not illuminate when outside of the vehicle
becomes dark. (Lighting switch 1ST position and 2ND posi-
tion operate normally.)

Parking, license plate, side marker and tail lamps and
headlamp will not go out when outside of the vehicle
becomes light. (Lighting switch 1ST position and 2nd posi-
tion 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- 6 9 , "Lighting Switch Inspection" .

Refer to LT- 7 0 , "Optical sensor System Inspection" .
If above systems are normal, replace BCM.
Shut off delay feature will not operate.

CAN communication line inspection between BCM and combina-
tion meter. Refer to BCS-14, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .

Refer to BL-40, "Check Door Switch" .
If above system is normal, replace BCM.
When lighting switch is AUTO
position : AUTO LIGHT SW ON
PKIA7595E