2004 INFINITI FX35 key

LAN-20
[CAN]
CAN COMMUNICATION
Revision: 2004 November 2004 FX35/FX45
*: VK45DE engine model onlyA/T CHECK indica-
tor lamp signalTR
A/T position indica-
tor lamp signalTR
A/T shift schedule
change demand sig-
nalRT
Manual mode signal R T
Not manual mode
signalRT
Manual mode shift up
signalRT
Manual mode shift
down signalRT
Manual mode indica-
tor signalTR
Ignition knob switch
signalTR
Snow mode switch
signalRT
Current gear posi-
tion signal*RT
Next gear position
signal*RT
Shift change signal* R T
Shift pattern signal* R TSignals ECM TCMDis-
play
con-
trol
unitLow
tire
pres-
sure
warn-
ing
con-
trol
unitAWD
con-
trol
unitICC
unitIntel-
ligent
Key
unitBCMStee r-
ing
angle
sen-
sorUni-
fied
meter
and
A/C
amp.ICC
sen-
sorABS
actu-
ator
and
elec-
tric
unit
(con-
trol
unit)Driver
seat
con-
trol
unitIPDM
E/R

LAN-92
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00C0F
1. When there are no indications of “AIR PRESSURE MONITOR”, “INTELLIGENT KEY”, “BCM”, “METER A/
C AMP”, “AUTO DRIVE POS.” or “IPDM E/R” on “SELECT SYSTEM” display of CONSULT-II, print the
“SELECT SYSTEM”.
2. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “AIR PRESSURE MONITOR”, “ICC”,
“INTELLIGENT KEY”, “BCM”, “METER A/C AMP”, “ABS”, “AUTO DRIVE POS.”, and “IPDM E/R” dis-
played on CONSULT-II.
3. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “AIR PRESSURE MONITOR”,
“ICC”, “INTELLIGENT KEY”, “BCM”, “METER A/C AMP”, “ABS”, “AUTO DRIVE POS.”, and “IPDM E/R”
displayed on CONSULT-II.
4. Attach the printed sheet of “SELECT SYSTEM”, “SELF-DIAG RESULTS” and “CAN DIAG SUPPORT
MNTR” onto the check sheet. Refer to LAN-94, "
CHECK SHEET" .
5. Based on the indications of “SELECT SYSTEM” and the results of “CAN DIAG SUPPORT MNTR”, put
marks “v” onto the items with “No indication”, “NG”, or “UNKWN” in the check sheet table. Refer to LAN-
94, "CHECK SHEET" .
NOTE:

If “NG” is displayed on “INITIAL DIAG (Initial diagnosis)” as “CAN DIAG SUPPORT MNTR” for the diag-
nosed control unit, replace the control unit.

The “CAN DIAG SUPPORT MNTR” items, which are not in check sheet table, are not related to diag-
nostic procedure on service manual.
So it is not necessary to check the status of “CAN DIAG SUPPORT MNTR” items which are not indi-
cated in check sheet table.
6. Check CAN communication line of the navigation system. Refer to AV- 1 5 8 , "
CAN Communication Line
Check" .
PKIA2093E
PKIA8260E
PKIA8343E

LAN-106
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
Case 10
Check Intelligent Key unit circuit. Refer to LAN-121, "Intelligent Key Unit Circuit Check" .
PKIA7973E
SKIA6593E

CAN SYSTEM (TYPE 3)
LAN-121
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect low tire pressure warning control unit connector.
2. Check resistance between low tire pressure warning control unit
harness connector M74 terminals 9 (L) and 21 (R).
OK or NG
OK >> Replace low tire pressure warning control unit.
NG >> Repair harness between low tire pressure warning con-
trol unit and harness connector M82.
ICC Unit Circuit CheckAKS00C0O
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of ICC unit for damage, bend and loose connection (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 ICC unit connector.
2. Check resistance between ICC unit harness connector M88 ter-
minals 14 (L) and 5 (R).
OK or NG
OK >> Replace ICC unit.
NG >> Repair harness between ICC unit and harness connec-
tor M82.
Intelligent Key Unit Circuit CheckAKS00C0P
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of Intelligent Key unit for damage, bend and loose connection (unit side
and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.9 (L) - 21 (R) : Approx. 54 - 66Ω
SKIA6885E
14 (L) - 5 (R) : Approx. 54 - 66Ω
SKIA6886E

LAN-122
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect Intelligent Key unit connector.
2. Check resistance between Intelligent Key unit harness connec-
tor M34 terminals 2 (L) and 3 (R).
OK or NG
OK >> Replace Intelligent Key unit.
NG >> Repair harness between Intelligent Key unit and data
link connector.
Data Link Connector Circuit CheckAKS00C0Q
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.
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-92, "Work Flow" .
NG >> Repair harness between data link connector and BCM.
BCM Circuit CheckAKS00C0R
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 (L) - 3 (R) : Approx. 54 - 66Ω
SKIA6887E
6 (L) - 14 (R) : Approx. 54 - 66Ω
SKIA6868E

CAN SYSTEM (TYPE 3)
LAN-127
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
CAN Communication Circuit CheckAKS00C0Y
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,
control unit side, unit side, sensor side, meter side and harness side).
–ECM
–A/T assembly
–Display control unit
–Low tire pressure warning control unit
–ICC unit
–Intelligent Key unit
–BCM
–Steering angle sensor
–Unified meter and A/C amp.
–ICC sensor
–ABS actuator and electric unit (control unit)
–Driver seat control unit
–IPDM E/R
–Between ECM and IPDM E/R
–Between ECM and A/T assembly
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.

LAN-128
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
2. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect following connectors.
–ECM connector
–Harness connector M82
–Display control unit connector
–Low tire pressure warning control unit connector
–ICC unit connector
–Intelligent Key unit connector
–BCM connector
–Steering angle sensor connector
–Unified meter and A/C amp. connector
–Harness connector M41
2. Check continuity between data link connector M5 terminals 6 (L)
and 14 (R).
OK or NG
OK >> GO TO 3.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display control unit

Harness between data link connector and low tire pressure warning control unit

Harness between data link connector and ICC unit

Harness between data link connector and Intelligent Key unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41 6 (L) - 14 (R) : Continuity should not exist.
SKIA6868E

CAN SYSTEM (TYPE 3)
LAN-129
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
3. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between data link connector M5 terminals 6 (L), 14
(R) and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between data link connector and ECM

Harness between data link connector and harness
connector M82

Harness between data link connector and display control unit

Harness between data link connector and low tire pressure warning control unit

Harness between data link connector and ICC unit

Harness between data link connector and Intelligent Key unit

Harness between data link connector and BCM

Harness between data link connector and steering angle sensor

Harness between data link connector and unified meter and A/C amp.

Harness between data link connector and harness connector M41
4. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect A/T assembly connector.
2. Check continuity between A/T assembly harness connector F44
terminals 3 (L) and 8 (R).
OK or NG
OK >> GO TO 5.
NG >> Repair harness between A/T assembly and harness
connector F102.
5. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between A/T assembly harness connector F44 ter-
minals 3 (L), 8 (R) and ground.
OK or NG
OK >> GO TO 6.
NG >> Repair harness between A/T assembly and harness
connector F102. 6 (L) - Ground : Continuity should not exist.
14 (R) - Ground : Continuity should not exist.
SKIA6874E
3 (L) - 8 (R) : Continuity should not exist.
SKIA6866E
3 (L) - Ground : Continuity should not exist.
8 (R) - Ground : Continuity should not exist.
SKIA6875E