2008 INFINITI FX35 ignition

LT-26
< SERVICE INFORMATION >
HEADLAMP - XENON TYPE -
3. Check continuity between IPDM E/R harness connector E7 ter-minal 30 and front combination lamp LH harness connector E44
terminal 6.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-24, "Removal and
Installation of IPDM E/R".
NG >> Repair harness or connector.
Headlamps Does Not Turn OFFINFOID:0000000001381748
1.CHECK HEADLAMP TURN OFF
Make sure that lighting switch is OFF. And check if headlamp turns off when ignition switch is turned OFF.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.CHECK COMBINATION SWITCH INPUT SIGNAL
CONSULT-III DATA MONITOR
1. Select “HEAD LAMP1” and “HEAD LAMP2” of BCM data monitor item.
2. With operating the lighting switch, check the monitor status.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-24, "Removal and Installation of IPDM E/R".
NG >> Check combination switch (lighting switch). Refer to LT-104, "
Combination Switch Inspection".
3.CHECKING CAN COMMUNICATIONS BETWEEN BCM AND IPDM E/R
Perform self-diagnosis for “BCM” with CONSULT-III.
Display of self-diagnosis results
NO DTC>> Replace IPDM E/R. Refer to PG-24, "Removal and Installation of IPDM E/R".
CAN COMM CIRCUIT>> Refer to LAN-43, "
CAN System Specification Chart".
General Information for Xenon Headlamp Trouble DiagnosisINFOID:0000000001328284
In most cases, malfunction of xenon headlamp - “does not ill uminate”, “flickers” or “dark” - is caused by a mal-
functioning xenon bulb. A malfunctioning HID control unit or lamp housing, however, may be a cause. Be sure
to perform trouble diagnosis following the steps described below.
Caution:INFOID:0000000001328285
 Installation or removal of connector must be done with lighting switch OFF.
 Disconnect the battery cable from the negative terminal or remove power fuse.
 When the lamp is illuminated (when lighting switch is ON), never touch harness, HID control unit, inside of
lamp, or lamp metal parts.
 To check illumination, temporarily install lamp in vehicle. Be sure to connect power at vehicle side connector.
 If error can be traced directly to electrical system, fi rst check for items such as blown fuses and fusible links,
broken wires or loose connectors, dislocated terminals, and improper connections.
 Never work with wet hands.
 Using a tester for HID control unit circuit trouble diagnosis is prohibited.
 Disassembling HID control unit or harnesses ( bulb socket harness, ECM harness) is prohibited.
 Immediately after illumination, light intensity and color will fluctuate, but there is nothing wrong.
 When bulb has come to end of its life, brightness will dr op significantly, it will flash repeatedly, or light color
will turn reddish. 30 – 6 : Continuity should exist.
PKIA5213E
When lighting switch is OFF : HEAD LAMP SW1 OFF
: HEAD LAMP SW2 OFF
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LT-32
< SERVICE INFORMATION >
DAYTIME LIGHT SYSTEM
DAYTIME LIGHT SYSTEM
Component Parts and Harness Connector LocationINFOID:0000000001328291
System DescriptionINFOID:0000000001328292
Daytime light system turns ON daytime light lamps while driving. Daytime light lamps are not turned ON if
engine is activated with parking brake ON. Release parki ng brake to turn ON daytime light lamps. The lamps
turn OFF when the lighting switch is in the 2ND pos ition or AUTO position (headlamp is ON) and when the
lighting switch is in the PASSING position (daytime light lamps are not turned OFF only by parking brake
itself).
The parking brake signal and engine run or stop signal ar e sent to BCM (body control module) by CAN com-
munication line, and control daytime light system.
OUTLINE
Power is supplied at all times
 through 10A fuse [No. 19, located in fuse block (J/B)]
 to combination meter terminal 8,
 through 15A fuse [No. 22, located in fuse block (J/B)]
 to BCM terminal 42,
 through 50A fusible link (letter M, located in fuse, fusible link and relay box)
 to BCM terminal 55,
 through 10A fuse (No. 36, located in fuse, fusible link and relay box)
 to daytime light relay terminals 2 and 5.
When ignition switch is in ON or START position, power is supplied
PKIC9686E
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DAYTIME LIGHT SYSTEMLT-33
< SERVICE INFORMATION >
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 through 10A fuse [No. 12, located in fuse block (J/B)]
 to combination meter terminal 7,
 through 15A fuse [No. 1, located in fuse block (J/B)]
 to BCM terminal 38.
Ground is supplied
 to combination meter terminals 5, 6 and 15
 through grounds M35, M45 and M85,
 to BCM terminals 49 and 52
 through grounds M35, M45 and M85.
DAYTIME LIGHT OPERATION
Once the parking brake is turned OFF after ignition swit ch ON, if the lighting switch is turned OFF while engine
running, the BCM sends daytime light r equest signal (ON) through CAN communication.
When receiving daytime light request signal (ON), combi nation meter turns ON daytime light relay. And power
is supplied
 through daytime light relay terminal 1
 to combination meter terminal 10,
 through daytime light relay terminal 3
 to parking lamp RH and LH terminals 1.
Ground is supplied
 to combination meter terminals 5, 6 and 15
 through grounds M35, M45 and M85,
 to parking lamp RH and LH terminals 3
 through grounds E21, E50 and E51.
With power and grounds supplied, the daytime light lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-4, "System Description".
AUTO LIGHT OPERATION
Refer to LT-47, "System Description".
CAN Communication System DescriptionINFOID:0000000001328293
CAN (Controller Area Network) is a serial communication li ne 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 UnitINFOID:0000000001328294
Refer to LAN-43, "CAN System Specification Chart".
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DAYTIME LIGHT SYSTEMLT-39
< SERVICE INFORMATION >
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Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
2GY Combination
switch input 5
ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Lighting switch 2ND
Approx. 2.0 V
3L/B Combination
switch input 4
ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Front fog lamp switch
(Operate only front fog lamp
switch)
Approx. 0.8 V
Any of the conditions below
 Lighting switch 2ND
 Lighting switch PASSING (Operates only PASSING
switch)
Approx. 1.0 V
4PU/W Combination
switch input 3 ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF Approx. 0 V
Any of the conditions below
 Lighting switch AUTO
Approx. 1.0 V
PKIB4953J
PKIB4955J
PKIB4959J
PKIB4959J
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LT-40
< SERVICE INFORMATION >
DAYTIME LIGHT SYSTEM
32 GY/RCombination
switch output 5 ONLighting, turn, wip-
er switch (Wiper
intermittent dial
position 4) OFF
Approx. 7.2 V
Front fog lamp switch
(Operates only front fog
lamp switch) Approx. 1.0 V
33 G Combination
switch output 4
ONLighting, turn, wip-
er switch (Wiper
intermittent dial
position 4) OFF
Approx. 7.2 V
Lighting switch AUTO Approx. 1.2 V
34 W/B Combination
switch output 3 ONLighting, turn, wip-
er switch (Wiper
intermittent dial
position 4) OFF
Approx. 7.2 V
Lighting switch 2ND Approx. 1.2 V
Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
PKIB4960J
PKIB4956J
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
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DAYTIME LIGHT SYSTEMLT-41
< SERVICE INFORMATION >
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O PHow to Proceed with Trouble DiagnosisINFOID:0000000001328298
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT-32, "
System Description".
3. Perform Preliminary Check. Refer to LT-41, "
Preliminary Check".
4. Check symptom and repair or replace the cause of malfunction.
5. Does daytime light lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckINFOID:0000000001328299
CHECK POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSES
Check for blown fuses.
Refer to LT-35, "
Wiring Diagram - DTRL -".
OK or NG
35 W/G Combination
switch output 2 ONLighting, turn, wip-
er switch
(Wiper intermittent
dial position 4) OFF
Approx. 7.2 V
Any of the conditions below
 Lighting switch 2ND
 Lighting switch PASSING (Operates only PASSING
switch)
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
Te r m i -
nal No. Wire
color Signal name Measuring condition
Reference value
Ignition
switch Operation or condition
PKIB4960J
PKIB4958J
Unit Power source Fuse and fusible link No.
BCM Battery M
22
Ignition switch ON or START position 1
Daytime light relay Battery 36
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LT-42
< SERVICE INFORMATION >
DAYTIME LIGHT SYSTEM
OK >> GO TO 2.
NG >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to PG-
3.
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.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
OK or NG
OK >> INSPECTION END
NG >> Repair harness or connector.
INSPECTION PARKING BRAKE SWITCH CIRCUIT
1.CHECK BRAKE INDICATOR
1. Turn ignition switch ON.
2. When a parking brake is made ON/OFF, it checks w hether brake indicator lamp of combination meter
lights up / puts out the light.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
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 and ground.
OK or NG
OK >> Replace parking brake switch.
NG >> GO TO 3.
3.CHECK PARKING BRAKE SWITCH CIRCUIT
(+) (-)Ignition switch position
BCM con- nector Te r m i n a l O F F O N
M3 38 GroundApprox. 0 V Battery voltage
M4 42 Battery voltage Battery voltage
55 Battery voltage Battery voltage
PKIA7520E
BCM connector Terminal
GroundContinuity
M4 49
Ye s
52
SKIA5294E
1 – Ground : Battery voltage.
SKIA5876E
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DAYTIME LIGHT SYSTEMLT-43
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Disconnect combination meter connector.
3. Check continuity between combination meter harness connector M20 terminal 23 and parking brake switch harness connector
E207 terminal 1.
OK or NG
OK >> Replace combination meter.
NG >> Repair harness or connector.
CONSULT-III Functions (BCM)INFOID:0000000001328300
CONSULT-III can display each diagnostic item using the diagnostic test mode shown following.
CONSULT-III BASIC OPERATION
Refer to GI-34, "Description".
DATA MONITOR
Display Item List
1 – 23 : Continuity should exist.
SKIA5877E
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.
Monitor item Contents
IGN ON SW “ON/OFF” Displays “IGN position (ON)/OFF, ACC position (OFF)” judged from ignition switch sig-
nal.
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 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.
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)
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