2007 INFINITI M35 ras

LAN-82
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Malfunction Area ChartNKS004G6
MAIN LINE
BRANCH LINE
SHORT CIRCUIT
Malfunction Area Reference
Main line between TCM and data link connectorLAN-83, "
Main Line Between TCM and Data Link Connector"
Main line between data link connector and pre-crash seat belt
control unitLAN-84, "Main Line Between Data Link Connector and Pre-
crash Seat Belt Control Unit"
Main line between data link connector and RAS control unitLAN-85, "Main Line Between Data Link Connector and RAS
Control Unit"
Main line between RAS control unit and pre-crash seat belt con-
trol unitLAN-86, "Main Line Between RAS Control Unit and Pre-crash
Seat Belt Control Unit"
Main line between pre-crash seat belt control unit and driver
seat control unitLAN-87, "Main Line Between Pre-crash Seat Belt Control Unit
and Driver Seat Control Unit"
Main line between driver seat control unit and ABS actuator and
electric unit (control unit)LAN-88, "Main Line Between Driver Seat Control Unit and ABS
Actuator and Electric Unit (Control Unit)"
Main line between ABS actuator and electric unit (control unit)
and ICC sensor integrated unitLAN-89, "Main Line Between ABS Actuator and Electric Unit
(Control Unit) and ICC Sensor Integrated Unit"
Malfunction Area Reference
ECM branch line circuitLAN-89, "
ECM Branch Line Circuit"
AWD control unit branch line circuitLAN-90, "AWD Control Unit Branch Line Circuit"
AFS control unit branch line circuitLAN-91, "AFS Control Unit Branch Line Circuit"
BCM branch line circuitLAN-91, "BCM Branch Line Circuit"
LDW camera unit branch line circuitLAN-92, "LDW Camera Unit Branch Line Circuit"
TCM branch line circuitLAN-93, "TCM Branch Line Circuit"
NAVI control unit branch line circuitLAN-93, "NAVI Control Unit Branch Line Circuit"
AV control unit branch line circuitLAN-94, "AV Control Unit Branch Line Circuit"
Data link connector branch line circuitLAN-95, "Data Link Connector Branch Line Circuit"
Intelligent Key unit branch line circuitLAN-95, "Intelligent Key Unit Branch Line Circuit"
Unified meter and A/C amp. branch line circuitLAN-96, "Unified Meter and A/C Amp. Branch Line Circuit"
Steering angle sensor branch line circuitLAN-97, "Steering Angle Sensor Branch Line Circuit"
Low tire pressure warning control unit branch line circuitLAN-97, "Low Tire Pressure Warning Control Unit Branch Line
Circuit"
RAS control unit branch line circuitLAN-98, "RAS Control Unit Branch Line Circuit"
Pre-crash seat belt control unit branch line circuitLAN-99, "Pre-Crash Seat Belt Control Unit Branch Line Circuit"
Driver seat control unit branch line circuitLAN-99, "Driver Seat Control Unit Branch Line Circuit"
ABS actuator and electric unit (control unit) branch line circuitLAN-100, "ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit"
ICC sensor integrated unit branch line circuitLAN-101, "ICC Sensor Integrated Unit Branch Line Circuit"
IPDM E/R branch line circuitLAN-101, "IPDM E/R Branch Line Circuit"
Malfunction Area Reference
CAN communication circuitLAN-102, "
CAN Communication Circuit"

LAN-84
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Main Line Between Data Link Connector and Pre-crash Seat Belt Control UnitNKS004GY
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–Harness connector M66
–Harness connector B418
–Harness connector B437
–Harness connector B67
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors M66 and B418.
2. Check the continuity between the data link connector and the harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair the main line between the data link connector and the harness connector M66.
3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors B437 and B67.
2. Check the continuity between harness connectors.
OK or NG
OK >> GO TO 4.
NG >> Replace the body No. 2 harness.
Data link connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M606
M6638P Yes
14 39P Yes
Harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B41838P
B4371Yes
39P 12 Yes

TROUBLE DIAGNOSIS
LAN-85
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
4. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of pre-crash seat belt control unit.
2. Check the continuity between the harness connector and the pre-crash seat belt control unit harness con-
nector.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the data link connector and the pre-
crash seat belt control unit.
NG >> Replace the body harness.
Main Line Between Data Link Connector and RAS Control UnitNKS004GX
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–Harness connector M66
–Harness connector B418
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors M66 and B418.
2. Check the continuity between the data link connector and the harness connector.
OK or NG
OK >> GO TO 3.
NG >> Repair the main line between the data link connector and the harness connector M66.
Harness connectorPre-crash seat belt control unit
harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B671
B14224 Yes
12 22 Yes
Data link connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M606
M6638P Yes
14 39P Yes

LAN-86
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of RAS control unit.
2. Check the continuity between the harness connector and the RAS control unit harness connector.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the data link connector and the RAS
control unit.
NG >> Replace the body No. 2 harness.
Main Line Between RAS Control Unit and Pre-crash Seat Belt Control UnitNKS004GZ
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–Harness connector B437
–Harness connector B67
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of RAS control unit and the harness connectors B437 and B67.
2. Check the continuity between the RAS control unit harness connector and the harness connector.
OK or NG
OK >> GO TO 3.
NG >> Replace the body No. 2 harness.
Harness connector RAS control unit harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B41838P
B4761Yes
39P 8 Yes
RAS control unit harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B4761
B4371Yes
812Yes

TROUBLE DIAGNOSIS
LAN-87
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of pre-crash seat belt control unit.
2. Check the continuity between the harness connector and the pre-crash seat belt control unit harness con-
nector.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the RAS control unit and the pre-crash
seat belt control unit.
NG >> Replace the body harness.
Main Line Between Pre-crash Seat Belt Control Unit and Driver Seat Control
Unit
NKS004G8
INSPECTION PROCEDURE
1. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the following harness connectors.
–ECM harness connector
–Pre-crash seat belt control unit harness connector
–Harness connector B15 and B202
4. Check continuity between the pre-crash seat belt control unit harness connector and the harness connec-
tor.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the pre-crash seat belt control unit and
the driver seat control unit.
NG >> Replace the body harness.
Harness connectorPre-crash seat belt control unit
harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B671
B14224 Yes
12 22 Yes
Pre-crash seat belt control unit
harness connectorHarness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B14224
B153Yes
22 19 Yes

LAN-98
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressure warning control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the low tire pressure warning control unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the low tire pressure warning control unit. Refer to WT-13,
"Schematic" .
OK or NG
OK >>
Present error: Replace the low tire pressure warning control unit. Refer to WT-40, "Low Tire
Pressure Warning Control Unit" .

Past error: Error was detected in the low tire pressure warning control unit branch line.
NG >> Repair the power supply and the ground circuit.
RAS Control Unit Branch Line CircuitNKS004H4
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the RAS control unit for damage, bend and loose connection (unit
side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of RAS control unit.
2. Check the resistance between the RAS control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Replace the body No. 2 harness.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the RAS control unit. Refer to STC-20, "
Schematic" .
OK or NG
OK >>
Present error: Replace the RAS control unit.

Past error: Error was detected in the RAS control unit branch line.
NG >> Repair the power supply and the ground circuit.
Low tire pressure warning control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M19 15 16 Approx. 54 – 66
RAS control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
B476 1 8 Approx. 54 – 66

TROUBLE DIAGNOSIS
LAN-99
[CAN]
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LAN
Revision: 2007 April2007 M35/M45
Pre-Crash Seat Belt Control Unit Branch Line CircuitNKS004H5
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the pre-crash seat belt control unit for damage, bend and loose
connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of pre-crash seat belt control unit.
2. Check the resistance between the pre-crash seat belt control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Replace the body harness.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the pre-crash seat belt control unit. Refer to SB-6, "
Sche-
matic" .
OK or NG
OK >>
Present error: Replace the pre-crash seat belt control unit. Refer to SB-28, "Removal and
Installation of Pre-Crash Seat Belt Control Unit" .

Past error: Error was detected in the pre-crash seat belt control unit branch line.
NG >> Repair the power supply and the ground circuit.
Driver Seat Control Unit Branch Line CircuitNKS004GB
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
–Driver seat control unit connector
–Harness connector B202
–Harness connector B15
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
Pre-crash seat belt control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
B142 24 22 Approx. 54 – 66

HEADLAMP (FOR USA) - XENON TYPE -
LT-45
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Revision: 2007 April2007 M35/M45
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
Refer to LT- 11 5 , "System Description" .
XENON HEADLAMP
Xenon type lamps are used for to the low 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 strong lighting power, electronic control of
the power supply gives the headlamps stable quality and tone color.
Followings are some advantages of the xenon type headlamp.

The light produced by the headlamps is white color similar to sunlight that is easy to the eyes.

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

Counter-reflected luminance increases and the contrast enhances on the wet road in the rain. That makes
visibility go up more than the increase of the light volume.

Power consumption is approximately 25 percent less than halogen headlamps, reducing battery load.
CAN Communication System DescriptionNKS003OM
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 UnitNKS003ON
Refer to LAN-50, "CAN System Specification Chart" .