check INFINITI M35 2006 Factory Service Manual

TROUBLE DIAGNOSES WORK FLOW
LAN-17
[CAN]
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LAN
Revision: 2006 January2006 M35/M45
NOTE:
There is a case that some of “CAN DIAG SUPPORT MNTR” and “SELF-DIAG RESULTS” are not needed for
diagnosis. In the case, “UNKWN” and “CAN COMM CIRCUIT(U1000)” in “Check sheet results (example)”
change to “–”. Then, ignore check marks on the Check sheet table.
5. Perform system diagnosis for possible causes identified.
6. Perform diagnosis again after inspection and repair. Make sure that repair is completely performed, and
then end the procedure.
Start CAN system trouble diagnosis if this procedure can be confirmed. Refer to LAN-34, "
CAN Communica-
tion Unit" .
PKIC0267E

LAN-18
[CAN]
TROUBLE DIAGNOSES WORK FLOW
Revision: 2006 January2006 M35/M45
Example of Filling in Check Sheet When Initial Conditions Are Not Reproduced
1. See “SELF-DIAG RESULTS” of all units attached to the check sheet. If “CAN COMM CIRCUIT [U1000]”
or “CAN COMM CIRCUIT [U1001]” is displayed, put a check mark to the applicable column of self-diag-
nostic results of the check sheet table.
NOTE:
For “ENGINE”, “CAN COMM CIRCUIT [U1001]” are displayed. Put a check mark to it.
For “A/T”, “CAN COMM CIRCUIT [U1000]” are displayed. Put a check mark to it.
For “BCM”, “CAN COMM CIRCUIT [U1000]” is displayed. Put a check mark to it.
For “AIR PRESSURE MONITOR”, “CAN COMM CIRCUIT [U1000]” is displayed. Put a check mark to it.
For “INTELLIGENT KEY”, “CAN COMM CIRCUIT [U1000]” is displayed. Put a check mark to it.
For “METER A/C AMP”, “CAN COMM CIRCUIT [U1000]” are displayed. Put a check mark to it.
For “MULTI AV”, “CAN COMM CIRCUIT [U1000]” is displayed. Put a check mark to it.
For “AUTO DRIVE POS.”, “NO DTC IS DETECTED” are displayed. Do not put a check mark to it.
For “ABS”, “CAN COMM CIRCUIT [U1000]” are displayed. Put a check mark to it.
For “IPDM E/R”, “CAN COMM CIRCUIT [U1000]” is displayed. Put a check mark to it.
PKIC0268E

TROUBLE DIAGNOSES WORK FLOW
LAN-19
[CAN]
C
D
E
F
G
H
I
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MA
B
LAN
Revision: 2006 January2006 M35/M45
NOTE:
There is a case that some of “CAN DIAG SUPPORT MNTR” and “SELF-DIAG RESULTS” are not needed for
diagnosis. In the case, “UNKWN” and “CAN COMM CIRCUIT(U1000)” in “Check sheet results (example)”
change to “–”. Then, ignore check marks on the Check sheet table.
2. For the selected possible causes, it is expected that malfunctions have been found in the past.
PKIC0269E

LAN-40
[CAN]
CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
INPUT/OUTPUT SIGNAL CHART
2WD models
T: Transmit R: Receive
Signals
ECM
TCM
AFS control unit*1
BCM
LDW camera unit*2
Low tire pressure warning control unit
Steering angle sensor
Intelligent Key unit
Unified meter and A/C amp.
AV (NAVI) control unit
RAS control unit*3
Pre-crash seat belt control unit*4
Driver seat control unit
ABS actuator and electric unit (control unit)
ICC sensor integrated unit*5
IPDM E/R
A/C compressor request signal TR
Accelerator pedal position signal T R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T position indicator signal T R R R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Manual mode indicator signal T R R
N range signal T R R
Output shaft revolution signal R T R R
P range signal T R R R R
R range signal T R R R
Turbine revolution signal R T R
AFS OFF indicator signal T R
A/C switch signal R T
ACC signal T R R

LAN-44
[CAN]
CAN COMMUNICATION
Revision: 2006 January2006 M35/M45
AW D m o del s
T: Transmit R: Receive
Signals
ECM
TCM
AWD control unit
AFS control unit*1
BCM
LDW camera unit*2
Low tire pressure warning control unit
Steering angle sensor
Intelligent Key unit
Unified meter and A/C amp.
AV (NAVI) control unit
Pre-crash seat belt control unit*3
Driver seat control unit
ABS actuator and electric unit (control unit)
ICC sensor integrated unit*4
IPDM E/R
A/C compressor request signal TR
Accelerator pedal position signal T R R R R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
ASCD SET lamp signal T R
Battery voltage signal T R
Closed throttle position signal T R R
Cooling fan speed request signal TR
Engine coolant temperature signal T R
Engine speed signal T R R R R R R
Engine status signal T R R R
Fuel consumption monitor signal T R R
ICC brake switch signal T R
ICC prohibition signal T R
ICC steering switch signal T R
Malfunctioning indicator lamp signal T R
Power generation command value signal TR
Wide open throttle position signal T R
A/T CHECK indicator lamp signal T R
A/T position indicator signal T R R R R
A/T self-diagnosis signal R T
Current gear position signal T R R
Manual mode indicator signal T R R
N range signal T R R
Output shaft revolution signal R T R R
P range signal T R R R R
R range signal T R R R
Turbine revolution signal R T R
AWD signal T R
AWD warning lamp signal T R
AFS OFF indicator signal T R
A/C switch signal R T

CAN SYSTEM (TYPE 1)
LAN-53
[CAN]
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LAN
Revision: 2006 January2006 M35/M45
Check SheetNKS003Y0
NOTE:
If a check mark is put on “NG” on “INITIAL DIAG (Initial diagnosis)”, replace the control unit.
PKIB8380E

LAN-56
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2006 January2006 M35/M45
CHECK SHEET RESULTS (EXAMPLE)
NOTE:
If a check mark is put on “NG” on “INITIAL DIAG (Initial diagnosis)”, replace the control unit.
Case 1
Check harness between TCM and data link connector. Refer to LAN-72, "Inspection Between TCM and Data
Link Connector Circuit" .
PKIB8381E
SKIB4071E

CAN SYSTEM (TYPE 1)
LAN-57
[CAN]
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LAN
Revision: 2006 January2006 M35/M45
Case 2
Check harness between data link connector and driver seat control unit. Refer to LAN-73, "Inspection
Between Data Link Connector and Driver Seat Control Unit Circuit" .
PKIB8382E
SKIB4072E

LAN-58
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2006 January2006 M35/M45
Case 3
Check harness between driver seat control unit and ABS actuator and electric unit (control unit). Refer to LAN-
74, "Inspection Between Driver Seat Control Unit and ABS Actuator and Electric Unit (Control Unit) Circuit" .
PKIB8383E
SKIB4073E

CAN SYSTEM (TYPE 1)
LAN-59
[CAN]
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LAN
Revision: 2006 January2006 M35/M45
Case 4
Check ECM circuit. Refer to LAN-75, "ECM Circuit Inspection" .
PKIB8384E
SKIB4074E