Engine INFINITI FX35 2004 Service Manual

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" .

LT-50
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
NOTE:
1. Vehicles without auto light system display this item, but cannot monitor it.
2. Vehicles without daytime light system display this item, but cannot monitor it.
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 monitor it.
2. This item is displayed, but cannot monitor it. HEAD LAMP SW 1 “ON/OFF”Displays status (headlamp switch 1: ON/Others: OFF) of headlamp switch 2 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 position: ON/Others: OFF) of lighting switch judged from
lighting switch signal.
AUTO LIGHT SW
NOTE 1 “ON/OFF”Displays status of the lighting switch as judged from the 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.
DOOR SW - DR “ON/OFF”Displays status of the driver door as judged from the driver door switch signal. (Door is open:
ON/Door is closed: OFF)
DOOR SW - AS “ON/OFF”Displays status of the passenger door as judged from the passenger door switch signal.
(Door is open: ON/Door is closed: OFF)
DOOR SW - RR “ON/OFF”Displays status of the rear door as judged from the rear door switch (RH) signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - RL “ON/OFF”Displays status of the rear door as judged from the rear door switch (LH) signal. (Door is
open: ON/Door is closed: OFF)
BACK DOOR SW “ON/OFF”Displays status of the back door as judged from the 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.
OPTICAL SENSOR
NOTE 1
[0 - 5V] Displays “ambient light (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 1Allow day time light lamp operate by switching ON–OFF.
CORNERING LAMP
NOTE 2—

LT-52
DAYTIME LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
4. CHECK GROUND
1. Check continuity between clearance lamp RH harness connec-
tor E23 terminal 3 (B) and ground.
2. Check continuity between clearance lamp LH harness connec-
tor E43 terminal 3 (B) and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK BULB
Check bulbs of lamp which does 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 (L) and combination meter harness connector
M20 terminal 10 (L/W).
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 (B) – Ground : Continuity should exist.
3 (B) – Ground : Continuity should exist.
SKIA5881E
1 (L) – 10 (L/W) : Continuity should exist.
PKIA5216E
Engine running : ENGINE RUN ON
Engine stop : ENGINE RUN OFF
Parking brake ON : PKR SW ON
Parking brake OFF : PKR SW OFF
SKIA5883E

LT-66
AUTO LIGHT SYSTEM
Revision: 2004 November 2004 FX35/FX45
NOTE:
1. Vehicles without auto light system display this item, but cannot monitor it.
2. Vehicles without daytime light system display this item, but cannot monitor it.
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 monitor it.
2. This item is displayed, but cannot monitor it.
CONSULT-II Functions (IPDM E/R)AKS007I6
CONSULT-II can display each diagnostic item using the following diagnostic test modes: work support, self-
diagnostic results, data monitor and active test through data reception and command transmission via the
IPDM E/R CAN communication line.
CONSULT-II OPERATION
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
DOOR SW - RR “ON/OFF”Displays status of the rear door as judged from the rear door switch (RH) signal. (Door is
open: ON/Door is closed: OFF)
DOOR SW - RL “ON/OFF”Displays status of the rear door as judged from the rear door switch (LH) signal. (Door is
open: ON/Door is closed: OFF)
BACK DOOR SW “ON/OFF”Displays status of the back door as judged from the 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.
OPTICAL SENSOR
NOTE 1
[0 - 5V] Displays “ambient light (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 1Allow day time light lamp operate by switching ON–OFF.
CORNERING LAMP
NOTE 2—
Inspection Item, Diagnosis Mode Description
SELF-DIAGNOSTIC RESULTS The IPDM E/R performs self-diagnosis of CAN communication.
DATA MONITOR The input/output data of the IPDM E/R is displayed in real time.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ACTIVE TEST The IPDM E/R sends a drive signal to electronic components to check their operation.

FRONT FOG LAMP
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FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationAKS007O5
System DescriptionAKS007CI
Control of the fog lamps is dependent upon the position of the combination switch (lighting switch). The light-
ing switch must be in the 2ND position or AUTO position (LOW beam is ON) for front fog lamp operation.
When the lighting switch is placed in the fog lamp position the BCM (body control module) receives input sig-
nal requesting the fog lamps to illuminate. When the headlamps are illuminated, this input signal is communi-
cated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication
lines. The central processing unit of the IPDM E/R controls the front fog lamp relay coil. When activated, this
relay directs power to the front fog lamps.
OUTLINE
Power is supplied at all times

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 88, located in IPDM E/R (intelligent power distribution module engine room)]

to front fog lamp relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
Power is also supplied at all times

through 50A fusible link (letter M, located in the fuse and fusible link block)

to BCM (body control module) terminal 55

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM (body control module) terminal 42.
When the ignition switch is in ON or START position, power is supplied
PKIA5269E

LT-78
FRONT FOG LAMP
Revision: 2004 November 2004 FX35/FX45

to ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38.
When the ignition switch is in ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM (body control module) terminal 11.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50 and E51.
Fog Lamp Operation
The fog lamp switch is built into the combination switch. The lighting switch must be in the 2ND position or
AUTO position (LOW beam is ON) and the fog lamp switch must be ON for fog lamp operation.
With the fog lamp switch in the ON position, the CPU of the IPDM E/R grounds the coil side of the fog lamp
relay. The fog lamp relay then directs power

through IPDM E/R terminal 37

to front fog lamp LH terminal 1

through IPDM E/R terminal 36

to front fog lamp RH terminal 1.
Ground is supplied

to front fog lamp LH terminal 2

through grounds E21, E50 and E51, and

to front fog lamp RH terminal 2

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" .
EXTERIOR LAMP BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 2ND position (ON), the fog lamp switch is ON, and the
ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated.
Under this condition, the fog lamps (and headlamps) remain illuminated for 5 minutes, then the fog lamps (and
headlamps) are turned off.
Exterior lamp battery saver control mode can be changed by the function setting of CONSULT-II.
CAN Communication System DescriptionAKS007CJ
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 UnitAKS0080V
Refer to LAN-6, "CAN Communication Unit" .

FRONT FOG LAMP
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Revision: 2004 November 2004 FX35/FX45
Aiming AdjustmentAKS007CT
The fog lamp is a semi-sealed beam type which uses a replaceable halogen bulb. Before performing aiming
adjustment, make sure of the following.

Keep all tires inflated to correct pressure.

Place vehicle on level ground.

See that vehicle is unloaded (except for full levels of coolant, engine oil and fuel, and spare tire, jack, and
tools). Have the driver or equivalent weight placed in driver seat.
Adjust aiming in the vertical direction by turning the adjusting screw.
1. Set the distance between the screen and the center of the fog
lamp lens as shown at left.
2. Turn front fog lamps ON.
3. Adjust front fog lamps using adjusting screw so that the top edge
of the high intensity zone is 100 mm (4 in) below the height of
the fog lamp centers as shown at left.

When performing adjustment, if necessary, cover the head-
lamps and opposite fog lamp.
SKIA5557E
PKIA8619E
PKIA7887E

PARKING, LICENSE PLATE AND TAIL LAMPS
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Revision: 2004 November 2004 FX35/FX45
PARKING, LICENSE PLATE AND TAIL LAMPSPFP:26550
Component Parts and Harness Connector LocationAKS007O7
System DescriptionAKS007DT
Control of the parking, license plate, and tail lamp operation is dependent upon the position of the lighting
switch (combination switch). When the lighting switch is placed in the 1ST position, the BCM (body control
module) receives input signal requesting the parking, license plate, side marker and tail lamps to illuminate.
This input signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across
the CAN communication lines. The CPU (central processing unit) of the IPDM E/R (intelligent power distribu-
tion module engine room) controls the tail lamp relay coil. This relay, when energized, directs power to the
parking, license plate, side marker and tail lamps, which then illuminate.
The current that flows by Rear combination lamp unit is controlled, and a tail lamp (LED) is made to turn on.
Power is supplied at all times

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)]

to tail lamp relay [located in IPDM E/R (intelligent power distribution module engine room)] and

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
Power is also supplied at all times

through 50A fusible link (letter M, located in the fuse and fusible link block)

to BCM (body control module) terminal 55

through 15A fuse [No. 22, located in fuse block (J/B)]

to BCM (body control module) terminal 42

through 10A fuse [No. 20, located in fuse block (J/B)]

to rear combination lamp control unit terminal 1.
With the ignition switch in the ON or START position, power is supplied
PKIA5272E

LT-128
PARKING, LICENSE PLATE AND TAIL LAMPS
Revision: 2004 November 2004 FX35/FX45

through 15A fuse [No. 1, located in fuse block (J/B)]

to BCM (body control module) terminal 38

through ignition relay [located in IPDM E/R (intelligent power distribution module engine room)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine
room)].
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 6, located in fuse block (J/B)]

to BCM (body control module) terminal 11.
Ground is supplied

to BCM (body control module) terminals 49 and 52

through grounds M35, M45 and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50 and E51

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51.
OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the parking, license plate, side marker and tail lamps to illuminate. This input signal is
communicated to the IPDM E/R across the CAN communication lines. The CPU in the IPDM E/R controls the
tail lamp relay coil, which when energized, directs power

through IPDM E/R terminal 22

to front side marker lamp LH terminal 1

to clearance lamp LH terminal 2

to license plate lamp LH terminal 1

to rear combination lamp LH terminal 1

to rear combination lamp control unit terminal 2

to front side marker lamp RH terminal 1

to clearance lamp RH terminal 2

to license plate lamp RH terminal 1

to rear combination lamp RH terminal 1.
Ground is supplied at all times

to front side marker lamp LH terminal 2

through grounds E21, E50 and E51

to clearance lamp LH terminal 3

through grounds E21, E50 and E51

to license plate lamp LH terminal 2

through grounds B15 and B45

to rear combination lamp LH terminal 2

through grounds B15 and B45

to front side marker lamp RH terminal 2

through grounds E21, E50 and E51

to clearance lamp RH terminal 3

through grounds E21, E50 and E51

to license plate lamp RH terminal 2

through grounds B15 and B45

to rear combination lamp RH terminal 2

through grounds B203 and B210

to rear combination lamp control unit terminal 7

through grounds E21, E50 and E51.

ILLUMINATION
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Revision: 2004 November 2004 FX35/FX45
ILLUMINATIONPFP:27545
System DescriptionAKS007EI
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination
switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated)
the BCM (body control module) receives input signal requesting the illumination lamps to illuminate. This input
signal is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN
communication lines. The CPU (central processing unit) of IPDM E/R (intelligent power distribution module
engine room) controls the tail lamp relay coil. This relay, when energized, directs power to the illumination
lamps, which then illuminate.
Power is supplied at all times

to tail lamp relay [located in IPDM E/R (intelligent power distribution module engine room)]

through 10A fuse [No. 71, located in IPDM E/R (intelligent power distribution module engine room)].
Power is also supplied at all times

to BCM (body control module) terminal 55

through 50A fusible link (letter M, located in fuse and fusible link block)

to BCM (body control module) terminal 42

through 15A fuse [No. 22, located in fuse block (J/B)]

to CPU (central processing unit) [located in IPDM E/R (intelligent power distribution module engine room)]

through 15A fuse [No. 78, located in IPDM E/R (intelligent power distribution module engine room)]

to unified meter and A/C amp. terminal 21 and

to combination meter terminal 8

through 10A fuse [No. 19, located in fuse block (J/B)].
With the ignition switch in the ON or START position, power is supplied

to BCM (body control module) terminal 38

through 15A fuse [No. 1, located in fuse block (J/B)]

to unified meter and A/C amp. terminal 22

through 10A fuse [No. 12, located in fuse block (J/B)]

to ignition relay in the IPDM E/R (intelligent power distribution module engine room)

from ignition switch

to combination meter terminal 7

through 10A fuse [No. 14, located in fuse block (J/B)].
With the ignition switch in the ACC or ON position, power is supplied

to BCM (body control module) terminal 11

through 10A fuse [No. 6, located in fuse block (J/B)].
Ground is supplied

to BCM (body control module) terminals 49 and 52

to unified meter and A/C amp. terminals 29 and 30, and

to combination meter terminals 5, 6, and 15

through grounds M35, M45, and M85

to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60

through grounds E21, E50, and E51.
ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM receives
input signal requesting the illumination lamps to illuminate. This input signal is communicated to the IPDM E/R
across the CAN communication lines. The central processing unit of the IPDM E/R controls the tail lamp relay
coil, which, when energized, directs power

through IPDM E/R terminal 22

to glove box lamp terminal 1

to A/T device (illumination) terminal 11

to snow mode switch (illumination) terminal 4