2006 INFINITI M35 ignition

CAN SYSTEM (TYPE 3)
LAN-169
[CAN]
C
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B
LAN
Revision: 2006 January2006 M35/M45
CAN Communication Circuit InspectionNKS003ZP
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side,
control unit side, unit side, sensor side, meter side and harness side).
–ECM
–A/T assembly
–AFS control unit
–BCM
–Low tire pressure warning control unit
–Steering angle sensor
–Intelligent Key unit
–Unified meter and A/C amp.
–AV control unit
–Pre-crash seat belt control unit
–Driver seat control unit
–ABS actuator and electric unit (control unit)
–IPDM E/R
–Between ECM and A/T assembly
–Between ECM and AFS control unit
–Between ECM and AV control unit
–Between ECM and driver seat control unit
–Between ECM and IPDM E/R
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect following connectors.
–ECM connector
–Harness connector M72
–BCM connector
–Harness connector M61
2. Check continuity between ECM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.
Harness between ECM and harness connector M72
Harness between ECM and BCM
Harness between ECM and harness connector M61
ECM connector Terminal Continuity
M71 94 86 No
PKIA9860E

LAN-176
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2006 January2006 M35/M45
19. CHECK SYMPTOM
1. Fill in described symptoms on the column “Symptom” in the check sheet.
2. Connect all connectors, and then make sure that the symptom is reproduced.
OK or NG
OK >> GO TO 20.
NG >> Refer to LAN-18, "
Example of Filling in Check Sheet When Initial Conditions Are Not Reproduced"
.
20. CHECK UNIT REPRODUCIBILITY
Performs the following procedure for each unit, and then perform reproducibility test.
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the unit connector.
4. Connect the battery cable to the negative terminal.
5. Make sure that the symptom filled in the “Symptom” of the check sheet is reproduced. (Do not confuse it
with the symptom related to removed unit.)
6. Make sure that the same symptom is reproduced.
–A/T assembly
–AFS control unit
–BCM
–Low tire pressure warning control unit
–Steering angle sensor
–Intelligent Key unit
–Unified meter and A/C amp.
–AV control unit
–Pre-crash seat belt control unit
–Driver seat control unit
–ABS actuator and electric unit (control unit)
–ECM
–IPDM E/R
Check results
Reproduce>>Install removed unit, and then check the other unit.
Not reproduced>>Replace removed unit.
IPDM E/R Ignition Relay Circuit InspectionNKS003ZQ
Check the following. If no malfunction is found, replace the IPDM E/R.
IPDM E/R power supply circuit. Refer to PG-30, "Check IPDM E/R Power Supply and Ground Circuit" .
Ignition power supply circuit. Refer to PG-12, "IGNITION POWER SUPPLY — IGNITION SW. IN “ON”
AND/OR “START”" .

LAN-204
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2006 January2006 M35/M45
Case 19
Check CAN communication circuit. Refer to LAN-216, "CAN Communication Circuit Inspection" .
Case 20
Check IPDM E/R ignition relay circuit continuously sticks “OFF”. Refer to LAN-223, "IPDM E/R Ignition Relay
Circuit Inspection" .
PKIB8418E
PKIB8419E

CAN SYSTEM (TYPE 4)
LAN-205
[CAN]
C
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MA
B
LAN
Revision: 2006 January2006 M35/M45
Case 21
Check IPDM E/R ignition relay circuit continuously sticks “ON”. Refer to LAN-223, "IPDM E/R Ignition Relay
Circuit Inspection" .
Inspection Between TCM and Data Link Connector CircuitNKS003ZV
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
–Harness connector M61
–Harness connector M62
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect harness connector M72 and harness connector M61.
2. Check continuity between harness connector (A) and harness
connector (B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
PKIB8420E
AB
Continuity
Connector Terminal Connector Terminal
M7243H
M61 1 Yes
42H 2 Yes
PKIC0279E

LAN-206
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2006 January2006 M35/M45
3. CHECK HARNESS FOR OPEN CIRCUIT
Check continuity between harness connector (A) and data link con-
nector (B).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-9, "
TROUBLE DIAGNOSES WORK FLOW" .
NG >> Repair harness.
Inspection Between Data Link Connector and Pre-Crash Seat Belt Control Unit
Circuit
NKS003ZW
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
–Harness connector M13
–Harness connector B2
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect harness connector M13.
2. Check continuity between data link connector (A) and harness
connector (B).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
AB
Continuity
Connector Terminal Connector Terminal
M621
M606 Yes
214Yes
PKIC0280E
AB
Continuity
Connector Terminal Connector Terminal
M606
M1320M Yes
14 21M Yes
PKIC0281E

CAN SYSTEM (TYPE 4)
LAN-207
[CAN]
C
D
E
F
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L
MA
B
LAN
Revision: 2006 January2006 M35/M45
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect pre-crash seat belt control unit connector.
2. Check continuity between harness connector (A) and pre-crash
seat belt control unit harness connector (B).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-9, "
TROUBLE DIAGNOSES WORK FLOW" .
NG >> Replace harness.
Inspection Between Pre-Crash Seat Belt Control Unit and Driver Seat Control
Unit Circuit
NKS003ZX
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect following connectors.
–ECM connector
–Pre-crash seat belt control unit connector
–harness connector B15
4. Check continuity between pre-crash seat belt control unit har-
ness connector (A) and harness connector (B).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-9, "
TROUBLE DIAGNOSES WORK FLOW" .
NG >> Replace harness.
Inspection Between Driver Seat Control Unit and ABS Actuator and Electric Unit
(Control Unit) Circuit
NKS003ZY
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check 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 terminal or connector.
AB
Continuity
Connector Terminal Connector Terminal
B220M
B14224 Yes
21M 22 Yes
PKIC0295E
AB
Continuity
Connector Terminal Connector Terminal
B14224
B15 3 Yes
22 19 Yes
PKIC0296E

LAN-208
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2006 January2006 M35/M45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect harness connector B15 and harness connector B3.
2. Check continuity between harness connector (A) and harness
connector (B).
OK or NG
OK >> GO TO 3.
NG >> Replace harness.
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check continuity between harness connector (A) and ABS actu-
ator and electric unit (control unit) harness connector (B).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-9, "
TROUBLE DIAGNOSES WORK FLOW" .
NG >> Repair harness.
ECM Circuit InspectionNKS003ZZ
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check terminals and connector of ECM for damage, bend and loose connection (control module side and
harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector terminals.
OK or NG
OK >> Replace ECM.
NG >> Repair harness between ECM and A/T assembly.
AB
Continuity
Connector Terminal Connector Terminal
B153
B3 9Yes
19 8 Yes
PKIC0283E
AB
Continuity
Connector Terminal Connector Terminal
E1059
E30 35 Yes
814Yes
PKIC0284E
ECM connector TerminalResistance
(Approx.)
M71 94 86 108 – 132
PKIA9860E

CAN SYSTEM (TYPE 4)
LAN-209
[CAN]
C
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MA
B
LAN
Revision: 2006 January2006 M35/M45
TCM Circuit InspectionNKS00400
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control module side
and harness side).
–A/T assembly connector
–Harness connector F102
–Harness connector M72
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect A/T assembly connector.
2. Check resistance between A/T assembly harness connector ter-
minals.
OK or NG
OK >> Replace control valve with TCM.
NG >> Repair harness between A/T assembly and AFS control
unit.
AFS Control Unit Circuit InspectionNKS00401
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control unit side and
harness side).
–AFS control unit connector
–Harness connector F102
–Harness connector M72
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
A/T assembly
connectorTerminalResistance
(Approx.)
F42 3 8 54 – 66
SKIA6866E