Ac system INFINITI FX35 2006 Service Manual
[x] Cancel search | Manufacturer: INFINITI, Model Year: 2006, Model line: FX35, Model: INFINITI FX35 2006Pages: 4462, PDF Size: 57.74 MB
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LT-70
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
Optical sensor System InspectionNKS002WQ
1. CHECK OPTICAL SENSOR INPUT SIGNAL
With CONSULT-II
Select “BCM” on CONSULT-II. With “HEAD LAMP” data monitor,
make sure “OPTICAL SENSOR”, check difference in the voltage
when auto light sensor is illuminated and not illuminated.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If
optical sensor is insufficiently illuminated, the measured value
may not satisfy the standard.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between BCM harness connector M3 terminal 14 and ground.
CAUTION:
Optical sensor must be securely subjected to work lamp light. If
optical sensor is insufficiently illuminated, the measured value
may not satisfy the standard.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connector and optical sensor connector.
3. Check continuity (open circuit) between BCM harness connector M3 terminal 17 and optical sensor harness connector M37 ter-
minal 1.
4. Check continuity (short circuit) between BCM harness connector M3 terminal 17 and ground.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connector. Illuminated
OPTICAL SENSOR : 3.1 V or more
Not illuminated
OPTICAL SENSOR : 0.6 V or less
Illuminated
OPTICAL SENSOR : 3.1 V or more
Not illuminated
OPTICAL SENSOR : 0.6 V or less
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17 – 1 : Continuity should exist.
17 – Ground : Continuity should not exist.
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AUTO LIGHT SYSTEM LT-71
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3. CHECK OPTICAL SENSOR SIGNAL CIRCUIT
1. Check continuity (open circuit) between BCM harness connector M3 terminal 14 and optical sensor harness connector M37 ter-
minal 2.
2. Check continuity (short circuit) between BCM harness connector M3 terminal 14 and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair harness or connector.
4. CHECK OPTICAL SENSOR GROUND CIRCUIT
1. Check continuity (open circuit) between BCM harness connector M3 terminal 18 and optical sensor harness connector M37 ter-
minal 3.
2. Check continuity (short circuit) between BCM harness connector M3 terminal 18 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair harness or connector.
5. CHECK OPTICAL SENSOR VOLTAGE
1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector M3 terminal 17 and ground.
OK or NG
OK >> Replace optical sensor.
NG >> Replace BCM. Refer to BCS-15, "
Removal and Installa-
tion of BCM" .
14 – 2 : Continuity should exist.
14 – Ground : Continuity should not exist.
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18 – 3 : Continuity should exist.
18 – Ground : Continuity should not exist.
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17 – Ground : Approx. 5 V
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LT-72
AUTO LIGHT SYSTEM
Revision: 2006 December 2006 FX35/FX45
Removal and Installation of Optical SensorNKS002WR
REMOVAL
1. Insert a screwdriver or similar tool and remove front defroster grill (LH). Refer to IP-15, "
(U) Front Defroster Grille (RH/LH)" .
2. Disconnect optical sensor connector.
3. Remove optical sensor.
INSTALLATION
Installation is the reverse order of removal.
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LT-78
FRONT FOG LAMP
Revision: 2006 December 2006 FX35/FX45
FRONT FOG LAMPPFP:26150
Component Parts and Harness Connector LocationNKS002WW
System DescriptionNKS002WX
Control of the front fog lamps is dependent upon the position of the combination switch (lighting switch). The
lighting switch must be in the 2ND position or AUTO position (headlamp is ON) for front fog lamp opera-
tion.When the lighting switch is placed in the front fog lamp on position the BCM (body control module)
receives input signal requesting the front fog lamps to illuminate. When the headlamps are illuminated, this
input signal is communicated to the IPDM E/R (intelligent power distribution module engine room) through the
CAN communication lines. The CPU (central processing unit) located in 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, from battery direct,
through 15A fuse (No. 88, located in IPDM E/R)
to front fog lamp relay, located in IPDM E/R,
through 15A fuse (No. 78, located in IPDM E/R)
to CPU located in IPDM E/R,
through 10A fuse (No. 71, located in IPDM E/R)
to CPU located in IPDM E/R.
Power is also supplied at all times
through 50A fusible link (letter M, located in fuse, fusible link and relay box)
to BCM terminal 55,
through 15A fuse [No. 22, located in fuse block (J/B)]
to BCM terminal 42.
When ignition switch is in ON or START position, power is supplied
through 15A fuse [No. 1, located in fuse block (J/B)]
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FRONT FOG LAMP LT-79
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Revision: 2006 December 2006 FX35/FX45
to BCM terminal 38.
When ignition switch is in ACC or ON position, power is supplied
through 10A fuse [No. 6, located in fuse block (J/B)]
to BCM terminal 11.
Ground is supplied
to BCM terminals 49 and 52
through grounds M35, M45 and M85,
to IPDM E/R terminals 38 and 60
through grounds E21, E50 and E51.
FRONT FOG LAMP OPERATION
The front fog lamp switch is built into combination switch. The lighting switch must be in the 2ND position or
AUTO position (headlamp is ON) and the front fog lamp switch must be ON for front fog lamp operation.
With the front fog lamp switch in the ON position, the CPU located in the IPDM E/R grounds the coil side of the
front fog lamp relay. The front fog lamp relay then directs power
through IPDM E/R terminal 36
to front fog lamp RH terminal 1,
through IPDM E/R terminal 37
to front fog lamp LH terminal 1.
Ground is supplied
to front fog lamp RH and LH terminals 2
through grounds E21, E50 and E51.
With power and grounds supplied, 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 front 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 front fog lamps (and headlamps) remain illuminated for 5 minutes, then the front 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 DescriptionNKS002WY
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 UnitNKS002WZ
Refer to LAN-32, "CAN Communication Unit" .
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FRONT FOG LAMP LT-83
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How to Proceed With Trouble DiagnosisNKS002X3
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 7 8 , "
System Description" .
3. Perform Preliminary Check. Refer to LT- 8 3 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Does front fog lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS002X4
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to LT- 8 0 , "
Wiring Diagram — F/FOG —" .
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" .
48 L CAN − H— — —
49 R CAN − L— — —
60 B Ground ON — Approx. 0 V
Termi-
nal
No. Wire
color Signal
name Measuring condition
Reference value
Ignition
switch Operation or condition
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 88
Page 3652 of 4462
LT-90
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2006 December 2006 FX35/FX45
TURN SIGNAL AND HAZARD WARNING LAMPSPFP:26120
Component Parts and Harness Connector LocationNKS002XC
System DescriptionNKS002XD
TURN SIGNAL OPERATION
Power is supplied at all times
through 10A fuse [No. 20, located in fuse block (J/B)]
to rear combination lamp control unit terminal 1.
When ignition switch is in ON or START position, power is supplied
through 15A fuse [No. 1, located in fuse block (J/B)]
to BCM (body control module) terminal 38,
through 10A fuse [No. 12, located in fuse block (J/B)]
to combination meter terminal 7.
When ignition switch is in ACC or ON position, power is supplied
through 10A fuse [No. 6, located in fuse block (J/B)]
to BCM terminal 11.
Ground is supplied
to BCM terminals 49 and 52
through grounds M35, M45 and M85,
to rear combination lamp control unit terminal 7
through grounds E21, E50 and E51,
to combination meter terminals 5, 6 and 15
through grounds M35, M45 and M85.
LH Turn Signal Lamp
When the turn signal switch is moved to the left position, BCM output turn signal from BCM terminal 45, inter-
preting it as turn signal is ON.
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LT-92
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2006 December 2006 FX35/FX45
to grounds M35, M45 and M85
through hazard switch terminal 1.
When the hazard switch is depressed, BCM output turn signal from BCM terminals 45 and 46, interpreting it as
turn signal is ON.
Connected from BCM terminal 45 and 46 to front combination lamp RH and LH terminals 4.
Turn signal lamp turns ON
through front combination lamp RH and LH terminals 8
to grounds E21, E50 and E51.
Connected form BCM terminals 45 and 46 to rear combination lamp control unit terminals 4 and 5.
Rear turn signal (LED) turns ON
through rear combination lamp control unit terminal 11
to rear combination lamp LH terminal 3,
through rear combination lamp LH terminal 4
to rear combination lamp control unit terminal 10,
through rear combination lamp control unit terminal 9
to rear combination lamp RH terminal 3,
through rear combination lamp RH terminal 4
to rear combination lamp control unit terminal 8.
BCM sends signal to the unified meter and A/C amp. through CAN communication lines, and turns ON turn
signal indicator lamp with combination meter.
When rear turn signal lamp (LED) does not turn ON, rear combination lamp control unit sends signal to combi-
nation meter. And then unified meter and A/C amp. ends turn LED burnout status signal to BCM through CAN
communication lines for speeding up turn signal blinking.
REMOTE CONTROL ENTRY SYSTEM OPERATION
Power is supplied at all times
through 50A fusible link (letter M, located in fuse, fusible link and relay box)
to BCM terminal 55,
through 10A fuse [No. 19, located in fuse block (J/B)]
to combination meter terminal 8,
through 10A fuse [No. 20, located in fuse block (J/B)]
to rear combination lamp control unit terminal 1.
Ground is supplied
to BCM terminals 49 and 52
through grounds M35, M45 and M85,
to rear combination lamp control unit terminal 7
through grounds E21, E50 and E51,
to combination meter terminals 5, 6 and 15
through grounds M35, M45 and M85.
When the remote control entry system is triggered by input from key fob, BCM output turn signal from BCM
terminals 45 and 46, interpreting it as turn signal is ON.
Connected from BCM terminals 45 and 46 to front combination lamp RH and LH terminals 4.
Turn signal lamp turns ON
through front combination lamp RH and LH terminals 8
to grounds E21, E50 and E51.
Connected form BCM terminals 45 and 46 to rear combination lamp control unit terminals 4 and 5.
Rear turn signal (LED) turns ON
through rear combination lamp control unit terminal 11
to rear combination lamp LH terminal 3,
through rear combination lamp LH terminal 4
to rear combination lamp control unit terminal 10,
through rear combination lamp control unit terminal 9
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TURN SIGNAL AND HAZARD WARNING LAMPS LT-93
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Revision: 2006 December 2006 FX35/FX45
to rear combination lamp RH terminal 3,
through rear combination lamp RH terminal 4
to rear combination lamp control unit terminal 8.
BCM sends signal to the unified meter and A/C amp. through the CAN communication lines, and turns ON turn
signal indicator lamp with combination meter.
With power and input supplied, BCM controls the flashing of hazard warning lamps when key fob is used to
activate remote control entry system.
COMBINATION SWITCH READING FUNCTION
Refer to BCS-3, "COMBINATION SWITCH READING FUNCTION" .
CAN Communication System DescriptionNKS002XE
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 UnitNKS002XF
Refer to LAN-32, "CAN Communication Unit" .
Page 3664 of 4462
LT-102
TURN SIGNAL AND HAZARD WARNING LAMPS
Revision: 2006 December 2006 FX35/FX45
How to Proceed With Trouble DiagnosisNKS002XJ
1. Confirm the symptom or customer complaint.
2. Understand operation description and function description. Refer to LT- 9 0 , "
System Description" .
3. Perform preliminary check. Refer to LT- 1 0 2 , "
Preliminary Check" .
4. Check symptom and repair or replace the cause of malfunction.
5. Do turn signal and hazard warning lamps operate normally? If YES, GO TO 6. If NO, GO TO 4.
6. INSPECTION END
Preliminary CheckNKS002XK
CHECK POWER SUPPLY AND GROUND CIRCUIT
1. CHECK FUSES
Check for blown fuses.
Refer to LT- 9 5 , "
Wiring Diagram — TURN —" .
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
Rear combination lamp control unit Battery 20
(+) (-) Ignition switch position
OFF ACC ON
BCM con-
nector Terminal
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
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