INFINITI FX35 2004 Service Manual

LAN-190
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November 2004 FX35/FX45
Case 15
Check IPDM E/R circuit. Refer to LAN-200, "IPDM E/R Circuit Check" .
PKIA8019E
SKIA6629E

CAN SYSTEM (TYPE 5)
LAN-191
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Case 16
Check CAN communication circuit. Refer to LAN-200, "CAN Communication Circuit Check" .
Case 17
Check IPDM E/R ignition relay circuit continuously sticks “OFF”. Refer to LAN-205, "IPDM E/R Ignition Relay
Circuit Check" .
PKIA8020E
PKIA8022E

LAN-192
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November 2004 FX35/FX45
Case 18
Check IPDM E/R ignition relay circuit continuously sticks “ON”. Refer to LAN-205, "IPDM E/R Ignition Relay
Circuit Check" .
Circuit Check Between TCM and Data Link ConnectorAKS00C1R
1. CHECK HARNESS FOR OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Disconnect ECM connector and harness connector M82.
4. Check continuity between harness connector M82 terminals
14H (L), 15H (R) and data link connector M5 terminals 6 (L), 14
(R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-172, "
Work Flow" .
NG >> Repair harness.
Circuit Check Between Data Link Connector and Unified Meter and A/C Amp.AKS00C1S
1. CHECK HARNESS FOR OPEN CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Disconnect ECM connector and unified meter and A/C amp. connector.
4. Check continuity between data link connector M5 terminals 6
(L), 14 (R) and unified meter and A/C amp. harness connector
M55 terminals 1 (L), 11 (R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-172, "
Work Flow" .
NG >> Repair harness.
PKIA8021E
14H (L) - 6 (L) : Continuity should exist.
15H (R) - 14 (R) : Continuity should exist.
SKIA6861E
6 (L) - 1 (L) : Continuity should exist.
14 (R) - 11 (R) : Continuity should exist.
SKIA6862E

CAN SYSTEM (TYPE 5)
LAN-193
[CAN]
C
D
E
F
G
H
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L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Circuit Check Between Unified Meter and A/C Amp. and ABS Actuator and Elec-
tric Unit (Control Unit)
AKS00C1T
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
–Harness connector M41
–Harness connector E211
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect unified meter and A/C amp. connector and harness connector M41.
2. Check continuity between unified meter and A/C amp. harness
connector M55 terminals 1 (L), 11 (R) and harness connector
M41 terminals 15G (L), 14G (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check continuity between harness connector E211 terminals
15G (L), 14G (R) and ABS actuator and electric unit (control
unit) harness connector E56 terminals 11 (L), 15 (R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-172, "
Work Flow" .
NG >> Repair harness.1 (L) - 15G (L) : Continuity should exist.
11 (R) - 14G (R) : Continuity should exist.
SKIA6863E
15G (L) - 11 (L) : Continuity should exist.
14G (R) - 15 (R) : Continuity should exist.
SKIA6864E

LAN-194
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November 2004 FX35/FX45
Circuit Check Between ABS Actuator and Electric Unit (Control Unit) and Driver
Seat Control Unit
AKS00C1U
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
–Harness connector E205
–Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector and harness connector E205.
2. Check continuity between ABS actuator and electric unit (control
unit) harness connector E56 terminals 11 (L), 15 (R) and har-
ness connector E205 terminals 3 (L), 10 (R).
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect harness connector B8.
2. Check continuity between harness connector B5 terminals 3 (L),
10 (R) and harness connector B8 terminals 14 (L), 15 (R).
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-172, "
Work Flow" .
NG >> Repair harness.
ECM Circuit CheckAKS00C1V
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery 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.11 (L) - 3 (L) : Continuity should exist.
15 (R) - 10 (R) : Continuity should exist.
SKIA6880E
3 (L) - 14 (L) : Continuity should exist.
10 (R) - 15 (R) : Continuity should exist.
SKIA6881E

CAN SYSTEM (TYPE 5)
LAN-195
[CAN]
C
D
E
F
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MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector M90 termi-
nals 94 (L) and 86 (R).
OK or NG
OK >> Replace ECM.
NG >> Repair harness between ECM and harness connector
M82.
TCM Circuit CheckAKS00C1W
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery 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 M82
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
F44 terminals 3 (L) and 8 (R).
OK or NG
OK >> Replace control valve with TCM.
NG >> Repair harness between A/T assembly and display unit.
Display Unit Circuit CheckAKS00C1X
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of display unit for damage, bend and loose connection (unit side and har-
ness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.94 (L) - 86 (R) : Approx. 108 - 132Ω
SKIA6865E
3 (L) - 8 (R) : Approx. 54 - 66Ω
SKIA6866E

LAN-196
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect display unit connector.
2. Check resistance between display unit harness connector M62
terminals 14 (L) and 16 (R).
OK or NG
OK >> Replace display unit.
NG >> Repair harness between display unit and harness con-
nector M82.
AWD Control Unit Circuit CheckAKS00C1Y
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of AWD control unit for damage, bend and loose connection (control unit
side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect AWD control unit connector.
2. Check resistance between AWD control unit harness connector
M92 terminals 8 (L) and 16 (R).
OK or NG
OK >> Replace AWD control unit.
NG >> Repair harness between AWD control unit and harness
connector M82.
Data Link Connector Circuit CheckAKS00C1Z
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check data link connector and terminals for damage, bend and loose connection (connector side and har-
ness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.14 (L) - 16 (R) : Approx. 54 - 66Ω
SKIA6867E
8 (L) - 16 (R) : Approx. 54 - 66Ω
SKIA6889E

CAN SYSTEM (TYPE 5)
LAN-197
[CAN]
C
D
E
F
G
H
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L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
Check resistance between data link connector M5 terminals 6 (L)
and 14 (R).
OK or NG
OK >> Diagnose again. Refer to LAN-172, "Work Flow" .
NG >> Repair harness between data link connector and BCM.
BCM Circuit CheckAKS00C20
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of BCM 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 BCM connector.
2. Check resistance between BCM harness connector M3 termi-
nals 39 (L) and 40 (R).
OK or NG
OK >> Replace BCM. Refer to BCS-15, "Removal and Installa-
tion of BCM" .
NG >> Repair harness between BCM and data link connector.
Steering Angle Sensor Circuit CheckAKS00C21
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of steering angle sensor for damage, bend and loose connection (sensor
side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.6 (L) - 14 (R) : Approx. 54 - 66Ω
SKIA6868E
39 (L) - 40 (R) : Approx. 54 - 66Ω
SKIA6869E

LAN-198
[CAN]
CAN SYSTEM (TYPE 5)
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering angle sensor connector.
2. Check resistance between steering angle sensor harness con-
nector M14 terminals 4 (L) and 5 (R).
OK or NG
OK >> Replace steering angle sensor.
NG >> Repair harness between steering angle sensor and data
link connector.
Unified Meter and A/C Amp. Circuit CheckAKS00C22
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of unified meter and A/C amp. for damage, bend and loose connection
(meter side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect unified meter and A/C amp. connector.
2. Check resistance between unified meter and A/C amp. harness
connector M55 terminals 1 (L) and 11 (R).
OK or NG
OK >> Replace unified meter and A/C amp.
NG >> Repair harness between unified meter and A/C amp.
and harness connector M41.
ABS Actuator and Electric Unit (Control Unit) Circuit CheckAKS00C23
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of ABS actuator and electric unit (control unit) for damage, bend and loose
connection (control unit side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.4 (L) - 5 (R) : Approx. 54 - 66Ω
SKIA6870E
1 (L) - 11 (R) : Approx. 54 - 66Ω
SKIA6871E

CAN SYSTEM (TYPE 5)
LAN-199
[CAN]
C
D
E
F
G
H
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L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check resistance between ABS actuator and electric unit (con-
trol unit) harness connector E56 terminals 11 (L) and 15 (R).
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Repair harness between ABS actuator and electric unit
(control unit) and harness connector E205.
Driver Seat Control Unit Circuit CheckAKS00C24
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check following terminals and connectors for damage, bend and loose connection (control unit side and
harness side).
–Driver seat control unit connector
–Harness connector B151
–Harness connector B8
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect driver seat control unit connector.
2. Check resistance between driver seat control unit harness con-
nector B152 terminals 14 (OR) and 15 (SB).
OK or NG
OK >> Replace driver seat control unit.
NG >> Repair harness between driver seat control unit and har-
ness connector B5. 11 (L) - 15 (R) : Approx. 54 - 66Ω
SKIA6872E
14 (OR) - 15 (SB) : Approx. 54 - 66Ω
SKIA6882E