2006 INFINITI FX35 Ac system

LT-52
DAYTIME LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
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 “OFF” 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.
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 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 – 5 V” Displays “outside brightness (close to 5 V when light/close to 0 V 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—

DAYTIME LIGHT SYSTEM LT-53
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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

LT-54
DAYTIME LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
4. CHECK GROUND
1. Check continuity between parking lamp RH harness connector E23 terminal 3 and ground.
2. Check continuity between parking lamp LH harness connector E43 terminal 3 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK BULB
Inspect bulbs of lamp which do not illuminate.
OK or NG
OK >> GO TO 6.
NG >> Replace bulb.
6. CHECK DAYTIME RELAY CIRCUIT
1. Disconnect combination meter connector.
2. Check continuity between daytime lamp relay harness connec- tor E15 terminal 1 and combination meter harness connector
M20 terminal 10.
OK or NG
OK >> GO TO 7.
NG >> Repair harness or connector.
7. CHECK INPUT SIGNAL
1. Connect combination meter connector.
2. Start engine running.
3. Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor, make sure “ENGINE RUN” turns ON-OFF linked with operation
of engine running or stop.
4. Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor, make sure “PKB SW” turns ON-OFF linked with operation of
parking brake switch.
OK or NG
OK >> Replace BCM. Refer to BCS-15, "Removal and Installation of BCM" .
NG >> GO TO 8. 3 – Ground : Continuity should exist.
3 – Ground : Continuity should exist.
PKIC9688E
1 – 10 : Continuity should exist.
PKIA5216E
Engine running : ENGINE RUN ON
Engine stop : ENGINE RUN OFF
Parking brake ON : PKB SW ON
Parking brake OFF : PKB SW OFF
PKIA7591E

DAYTIME LIGHT SYSTEM LT-55
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Revision: 2006 December 2006 FX35/FX45
8. CHECKING CAN COMMUNICATIONS
Select “BCM” by CONSULT-II, and perform self-diagnosis for “BCM”.
Displayed self
-diagnosis results
NO DTC>> Replace BCM. Refer to BCS-15, "Removal and Instal-
lation of BCM" .
CAN COMM CIRCUIT>> Check BCM CAN communication system. Refer to BCS-14, "
CAN Communication Inspection
Using CONSULT-II (Self-Diagnosis)" .
Aiming AdjustmentNKS002W7
Refer to LT- 3 4 , "Aiming Adjustment" .
Bulb ReplacementNKS002W8
Refer to LT- 3 5 , "Bulb Replacement" .
Removal and InstallationNKS002W9
Refer to LT- 3 6 , "Removal and Installation" .
Disassembly and AssemblyNKS002WA
Refer to LT- 3 7 , "Disassembly and Assembly" .
PKIA7627E

LT-56
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
AUTO LIGHT SYSTEMPFP:28491
Component Parts and Harness Connector LocationNKS002WB
System DescriptionNKS002WC
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 4 , "
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

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-58
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
SchematicNKS002WG
TKWM0611E

AUTO LIGHT SYSTEM LT-59
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Revision: 2006 December 2006 FX35/FX45
Wiring Diagram — AUTO/L —NKS002WH
TKWM4297E