lan s INFINITI FX35 2004 Service Manual

CAN SYSTEM (TYPE 6)
LAN-249
[CAN]
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Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect following connectors.
–ECM connector
–Harness connector M82
–Display control unit connector
–Low tire pressure warning control unit connector
–AWD control unit connector
–ICC unit connector
–Intelligent Key unit connector
–BCM connector
–Steering angle sensor connector
–Unified meter and A/C amp. connector
–Harness connector M41
2. Check continuity between data link connector M5 terminals 6 (L)
and 14 (R).
OK or NG
OK >> GO TO 3.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display control unit

Harness between data link connector and low tire pressure warning control unit

Harness between data link connector and AWD control unit

Harness between data link connector and ICC unit

Harness between data link connector and Intelligent Key unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41 6 (L) - 14 (R) : Continuity should not exist.
SKIA6868E

LAN-250
[CAN]
CAN SYSTEM (TYPE 6)
Revision: 2004 November 2004 FX35/FX45
3. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between data link connector M5 terminals 6 (L), 14
(R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display control unit

Harness between data link connector and low tire pressure warning control unit

Harness between data link connector and AWD control unit

Harness between data link connector and ICC unit

Harness between data link connector and Intelligent Key unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41
4. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect A/T assembly connector.
2. Check continuity between A/T assembly harness connector F44
terminals 3 (L) and 8 (R).
OK or NG
OK >> GO TO 5.
NG >> Repair harness between A/T assembly and harness
connector F102.
5. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between A/T assembly harness connector F44 ter-
minals 3 (L), 8 (R) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness between A/T assembly and harness
connector F102. 6 (L) - Ground : Continuity should not exist.
14 (R) - Ground : Continuity should not exist.
SKIA6874E
3 (L) - 8 (R) : Continuity should not exist.
SKIA6866E
3 (L) - Ground : Continuity should not exist.
8 (R) - Ground : Continuity should not exist.
SKIA6875E

CAN SYSTEM (TYPE 6)
LAN-251
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Revision: 2004 November 2004 FX35/FX45
6. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector, ICC sensor connector and harness
connector E205.
2. Check continuity between ABS actuator and electric unit (control
unit) harness connector E56 terminals 11 (L) and 15 (R).
OK or NG
OK >> GO TO 7.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between ABS actuator and electric unit (con-
trol unit) and harness connector E211

Harness between ABS actuator and electric unit (con-
trol unit) and harness connector E205

Harness between ABS actuator and electric unit (control unit) and ICC sensor
7. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E56 terminals 11 (L), 15 (R) and ground.
OK or NG
OK >> GO TO 8.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between ABS actuator and electric unit (con-
trol unit) and harness connector E211

Harness between ABS actuator and electric unit (control unit) and harness connector E205

Harness between ABS actuator and electric unit (control unit) and ICC sensor
8. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect harness connector B8.
2. Check continuity between harness connector B5 terminals 3 (L)
and 10 (R).
OK or NG
OK >> GO TO 9.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between harness connector B5 and harness
connector B5

Harness between harness connector B5 and harness
connector B8 11 (L) - 15 (R) : Continuity should not exist.
SKIA6872E
11 (L) - Ground : Continuity should not exist.
15 (R) - Ground : Continuity should not exist.
SKIA6876E
3 (L) - 10 (R) : Continuity should not exist.
SKIA6877E

LAN-252
[CAN]
CAN SYSTEM (TYPE 6)
Revision: 2004 November 2004 FX35/FX45
9. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between harness connector B5 terminals 3 (L), 10
(R) and ground.
OK or NG
OK >> GO TO 10.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between harness connector B5 and harness
connector B5

Harness between harness connector B5 and harness connector B8
10. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check continuity between driver seat control unit harness con-
nector B152 terminals 14 (OR) and 15 (SB).
OK or NG
OK >> GO TO 11.
NG >> Repair harness between driver seat control unit and har-
ness connector B151.
11 . CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between driver seat control unit harness connector
B152 terminals 14 (OR), 15 (SB) and ground.
OK or NG
OK >> GO TO 12.
NG >> Repair harness between driver seat control unit and har-
ness connector B151.
12. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (R).
OK or NG
OK >> GO TO 13.
NG >> Repair harness between IPDM E/R and harness con-
nector E205. 3 (L) - Ground : Continuity should not exist.
10 (R) - Ground : Continuity should not exist.
SKIA6878E
14 (OR) - 15 (SB) : Continuity should not exist.
SKIA6882E
14 (OR) - Ground : Continuity should not exist.
15 (SB) - Ground : Continuity should not exist.
SKIA6883E
48 (L) - 49 (R) : Continuity should not exist.
SKIA6873E

CAN SYSTEM (TYPE 6)
LAN-253
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Revision: 2004 November 2004 FX35/FX45
13. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (R) and ground.
OK or NG
OK >> GO TO 14.
NG >> Repair harness between IPDM E/R and harness con-
nector E205.
14. ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to LAN-253, "
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-211, "Work Flow" .
NG >> Replace ECM and/or IPDM E/R.
IPDM E/R Ignition Relay Circuit CheckAKS00C2Y
Check the following. If no malfunction is found, replace the IPDM E/R.

IPDM E/R power supply circuit. Refer to PG-28, "IPDM E/R Power/Ground Circuit Inspection" .

Ignition power supply circuit. Refer to PG-12, "IGNITION POWER SUPPLY - IGNITION SW. IN “ON”
AND/OR “START”" .
Component InspectionAKS00C2Z
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION

Remove ECM and IPDM E/R from vehicle.

Check resistance between ECM terminals 94 and 86.

Check resistance between IPDM E/R terminals 48 and 49.48 (L) - Ground : Continuity should not exist.
49 (R) - Ground : Continuity should not exist.
SKIA6879E
Unit TerminalResistance value (Ω)
(Approx.)
ECM 94 - 86
108 - 132
IPDM E/R 48 - 49
LKIA0037E

LAN-254
[CAN]
CAN SYSTEM (TYPE 6)
Revision: 2004 November 2004 FX35/FX45

LT-6
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
General precautions for service operationsAKS004ZU

Never work with wet hands.

Xenon headlamp includes high voltage generating part. Be sure
to disconnect battery negative cable (negative terminal) or
power fuse before removing, installing, or touching the xenon
headlamp (including lamp bulb).

Turn the lighting switch OFF before disconnecting and connect-
ing the connector.

When turning the xenon headlamp on and while it is illuminated,
never touch the harness, bulb, and socket of the headlamp.

When checking the headlamp on/off operation, check it on vehi-
cle and with the power connected to the vehicle-side connector.

Do not touch the headlamp bulb glass surface with bare hands or allow oil or grease to get on it. Do not
touch the headlamp bulb just after the headlamp is turned off, because it is very hot.

Install the xenon headlamp bulb socket correctly. If it is installed
improperly, high-voltage leak or corona discharge may occur
that can melt the bulb, connector, and housing. Do not illuminate
the xenon headlamp bulb out of the headlamp housing. Doing
so can cause fire and harm your eyes.

When the bulb has burned out, wrap it in a thick vinyl bag and
discard. Do not break the bulb.

Leaving the bulb removed from the headlamp housing for a long
period of time can deteriorate the performance of the lens and
reflector (dirt, clouding). Always prepare a new bulb and have it
on hand when replacing the bulb.

When adjusting the headlamp aiming, turn the aiming adjust-
ment screw only in the tightening direction. (If it is necessary to loosen the screw, first fully loosen the
screw, and then turn it in the tightening direction.)

Do not use organic solvent (paint thinner or gasoline) to clean lamps and to remove old sealant.
Wiring Diagrams and Trouble DiagnosisAKS004ZV
When you read wiring diagrams, refer to the following:

Refer to GI-15, "How to Read Wiring Diagrams" in GI section.

Refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" for power distribution in PG section.
When you perform trouble diagnosis, refer to the following:

Refer to GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section.

Refer to GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section.
PKIA0183E
EL-3422D

HEADLAMP - XENON TYPE -
LT-9
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Revision: 2004 November 2004 FX35/FX45
Ground is supplied

to headlamp RH terminal 7

through grounds E21, E50 and E51

to headlamp LH terminal 7

through grounds E21, E50 and E51.
With power and ground supplied, the high beam headlamps illuminate.
If voltage is applied to a high beam solenoid, the bulb shade will move, even a xenon head lamp bulb comes
out, and a high beam and a low beam are changed.
The unified meter and A/C amp that received the high beam request signal by BCM across the CAN commu-
nication makes a high beam indicator lamp turn on in combination meter.
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 2ND position (ON), and the ignition switch is turned
from ON or ACC to OFF, the battery saver control function is activated.
Under this condition, the headlamps remain illuminated for 5 minutes, then the headlamps are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
AUTO LIGHT OPERATION (IF EQUIPPED)
Refer to LT- 5 4 , "System Description" in “AUTO LIGHT SYSTEM”.
VEHICLE SECURITY SYSTEM
The vehicle security system will flash the high beams if the system is triggered. Refer to BL-181, "VEHICLE
SECURITY (THEFT WARNING) SYSTEM" .
XENON HEADLAMP
Xenon type headlamp is adopted to the low and high beam headlamps. Xenon bulbs do not use a filament.
Instead, they produce light when a high voltage current is passed between two tungsten electrodes through a
mixture of xenon (an inert gas) and certain other metal halides. In addition to added lighting power, electronic
control of the power supply gives the headlamps stable quality and tone color.
Following are some of the many advantages of the xenon type headlamp.

The light produced by the headlamps is a white color comparable to sunlight that is easy on the eyes.

Light output is nearly double that of halogen headlamps, affording increased area of illumination.

The light features a high relative spectral distribution at wavelengths to which the human eye is most sen-
sitive. This means that even in the rain, more light is reflected back from the road surface toward the vehi-
cle, for added visibility.

Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System DescriptionAKS007MB
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 UnitAKS0080S
Refer to LAN-6, "CAN Communication Unit" .

LT-34
HEADLAMP - XENON TYPE -
Revision: 2004 November 2004 FX35/FX45
Aiming AdjustmentAKS007MV
PREPARATION BEFORE ADJUSTING
For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following.
1. Keep all tires inflated to correct pressures.
2. Place vehicle on flat surface.
3. Set that there is no-load in vehicle other than the driver (or equivalent weight placed in driver's position).
Coolant, engine oil filled up to correct level and full fuel tank.
LOW BEAM AND HIGH BEAM
1. Turn headlamp low beam on.
2. Use adjusting screws to perform aiming adjustment.
SKIA5544E

DAYTIME LIGHT SYSTEM
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Revision: 2004 November 2004 FX35/FX45

through grounds M35, M45 and M85

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85.
DAYTIME LIGHT OPERATION
With the engine running, the lighting switch in the OFF or 1ST position and parking brake released, power is
supplied

through daytime light relay terminal 1

to combination meter terminal 10

through daytime light relay terminal 3

to clearance lamp RH and LH terminal 1.
Ground is supplied

to combination meter terminals 5, 6 and 15

through grounds M35, M45 and M85

to clearance lamp RH and LH terminal 3

through grounds E21, E50 and E51.
With power and grounds supplied, the front fog lamps illuminate.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
AUTO LIGHT OPERATION
For auto light operation, refer to LT- 5 4 , "System Description" in “AUTO LIGHT SYSTEM”.
CAN Communication System DescriptionAKS007N1
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 UnitAKS0080T
Refer to LAN-6, "CAN Communication Unit" .