control INFINITI M35 2007 Factory Service Manual

LAN-54
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45

*1: Models with adaptive front-lighting system

*2: Models with lane departure warning

*3: Models with rear active steer

*4: Models with ICC system Seat belt buckle switch signal R T
Target A/C evaporator temperature signal R T
Vehicle speed signalRRR RRRT RR R
RRRRR TR
Steering angle sensor signal R T R R
Tire pressure data signal R T
Tire pressure signalRR T
TR
RAS signalTR
A/T shift schedule change demand signal R T
ABS malfunction signalTR
ABS operation signal TR
ABS warning lamp signal R T
Brake pressure control signalTR
Brake warning lamp signal R T
Side G sensor signal R T
SLIP indicator lamp signal R T
TCS malfunction signalTR
TCS operation signal TR
VDC malfunction signalTR
VDC OFF indicator lamp signal R T
VDC OFF switch signalTR
VDC operation signalTR
Deceleration degree commandment value signalRT
ICC OD cancel request signal R T
ICC operation signal R T
ICC warning lamp signal R T
Front wiper stop position signal R T
High beam status signal RT
Hood switch signal R T
Low beam status signal R R T
Rear window defogger control signal R R T
Starter relay status signal R TSignals
ECM
AFS
*1
BCM
LANE
*2
TCM
AV
I-KEY
M&A
STRG
TPMS
RAS
*3
PSB
ADP
ABS
ICC
*4
IPDM-E

TROUBLE DIAGNOSIS
LAN-57
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Revision: 2007 April2007 M35/M45

*1: Models with adaptive front-lighting system

*2: Models with lane departure warning

*3: Models with ICC system Seat belt buckle switch signal R T
Target A/C evaporator temperature signal R T
Vehicle speed signalRRRRRRT RRR
RRRRR TR
Steering angle sensor signal R T R
Tire pressure data signal R T
Tire pressure signalRR T
TR
A/T shift schedule change demand signal R T
ABS malfunction signalTR
ABS operation signal TR
ABS warning lamp signal R T
Brake pressure control signalTR
Brake warning lamp signal R T
Side G sensor signal R T
SLIP indicator lamp signal R T
TCS malfunction signalTR
TCS operation signal TR
VDC malfunction signalTR
VDC OFF indicator lamp signal R T
VDC OFF switch signalTR
VDC operation signalTR
Deceleration degree commandment value signalRT
ICC OD cancel request signal R T
ICC operation signal R T
ICC warning lamp signalRT
Front wiper stop position signal R T
High beam status signal RT
Hood switch signal R T
Low beam status signal R R T
Rear window defogger control signal R R T
Starter relay status signal R TSignals
ECM
4WD
AFS
*1
BCM
LANE
*2
TCM
AV
I-KEY
M&A
STRG
TPMS
PSB
ADP
ABS
ICC
*3
IPDM-E

TROUBLE DIAGNOSIS
LAN-81
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Revision: 2007 April2007 M35/M45
Component Parts LocationNKS004G4
Harness LayoutNKS004G5
Refer to PG-62, "Harness Layout" .
1. AWD control unit F109 2. AFS control unit F110 3. IPDM E/R E9
4. BCM M1 5. NAVI control unit M210: With
navigation system
AV control unit M210: Without
navigation system6. Unified meter and A/C amp. M65
7. ICC sensor integrated unit E61 8. ABS actuator and electric unit
(control unit) E309. Intelligent Key unit M32
10. Data link connector M60 11. Low tire pressure warning con-
trol unit M1912. Driver seat control unit B204
13. Steering angle sensor M47 14. TCM F42 15. Pre-crash seat belt control unit
B142
16. RAS control unit B476 17. LDW camera unit M182 18. ECM M71
PKID0344E

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
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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
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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-88
[CAN]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
Main Line Between Driver Seat Control Unit and ABS Actuator and Electric Unit
(Control Unit)
NKS004G9
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 B3
–Harness connector E105
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
–Harness connectors B202 and B15
–Harness connectors B3 and E105
2. Check the continuity between harness connectors.
OK or NG
OK >> GO TO 3.
NG >> Replace the body harness.
3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of ABS actuator and electric unit (control unit).
2. Check the continuity between the harness connector and the ABS actuator and electric unit (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 driver seat control unit and the ABS
actuator and electric unit (control unit).
NG >> Repair the main line between the harness connector E105 and the ABS actuator and electric unit
(control unit).
Harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B153
B39Yes
19 8 Yes
Harness connectorABS actuator and electric unit (control unit)
harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
E1059
E3035 Yes
814Yes

TROUBLE DIAGNOSIS
LAN-89
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Revision: 2007 April2007 M35/M45
Main Line Between ABS Actuator and Electric Unit (Control Unit) and ICC Sen-
sor Integrated Unit
NKS004H0
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.
–ABS actuator and electric unit (control unit) harness connector
–ICC sensor integrated unit harness connector
–IPDM E/R harness connector
4. Check continuity between the ABS actuator and electric unit (control unit) harness connector and the ICC
sensor integrated 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 ABS actuator and electric unit (con-
trol unit) and the ICC sensor integrated unit.
NG >> Repair the main line between the ABS actuator and electric unit (control unit) and the ICC sensor
integrated unit.
ECM Branch Line CircuitNKS004GA
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 ECM 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 ECM.
2. Check the resistance between the ECM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the ECM branch line.
ABS actuator and electric unit (control unit)
harness connectorICC sensor integrated unit
harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
E3035
E613Yes
14 6 Yes
ECM harness connector
Resistance (Ω)
Connector No. Terminal No.
M71 94 86 Approx. 108 – 132