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![INFINITI FX35 2004 Service Manual LAN-132
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
13. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (R) and groun INFINITI FX35 2004 Service Manual LAN-132
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
13. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (R) and groun](/manual-img/42/57021/w960_57021-3432.png)
LAN-132
[CAN]
CAN SYSTEM (TYPE 3)
Revision: 2004 November 2004 FX35/FX45
13. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between IPDM E/R harness connector E9 termi-
nals 48 (L), 49 (R) and ground.
OK or NG
OK >> GO TO 14.
NG >> Repair harness between IPDM E/R and harness con-
nector E205.
14. ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to LAN-132, "
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-92, "Work Flow" .
NG >> Replace ECM and/or IPDM E/R.
IPDM E/R Ignition Relay Circuit CheckAKS00C0Z
Check the following. If no malfunction is found, replace the IPDM E/R.
IPDM E/R power supply circuit. Refer to PG-28, "IPDM E/R Power/Ground Circuit Inspection" .
Ignition power supply circuit. Refer to PG-12, "IGNITION POWER SUPPLY - IGNITION SW. IN “ON”
AND/OR “START”" .
Component InspectionAKS00C10
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION
Remove ECM and IPDM E/R from vehicle.
Check resistance between ECM terminals 94 and 86.
Check resistance between IPDM E/R terminals 48 and 49.48 (L) - Ground : Continuity should not exist.
49 (R) - Ground : Continuity should not exist.
SKIA6879E
Unit TerminalResistance value (Ω)
(Approx.)
ECM 94 - 86
108 - 132
IPDM E/R 48 - 49
LKIA0037E
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CAN SYSTEM (TYPE 4)
LAN-133
[CAN]
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LAN
Revision: 2004 November 2004 FX35/FX45
CAN SYSTEM (TYPE 4)PFP:23710
System DescriptionAKS00C11
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
Component Parts and Harness Connector LocationAKS00C12
SKIA7123E
Page 3435 of 4449
LAN-134
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
SchematicAKS00C13
TKWM1296E
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CAN SYSTEM (TYPE 4)
LAN-135
[CAN]
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Wiring Diagram - CAN -AKS00C14
TKWM1297E
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LAN-136
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
TKWM0752E
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CAN SYSTEM (TYPE 4)
LAN-137
[CAN]
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Revision: 2004 November 2004 FX35/FX45
TKWH0250E
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![INFINITI FX35 2004 Service Manual LAN-138
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00C15
1. When there are no indications of “BCM”, “METER A/C AMP” or “IPDM E/R” on “SELECT SYSTEM” d INFINITI FX35 2004 Service Manual LAN-138
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00C15
1. When there are no indications of “BCM”, “METER A/C AMP” or “IPDM E/R” on “SELECT SYSTEM” d](/manual-img/42/57021/w960_57021-3438.png)
LAN-138
[CAN]
CAN SYSTEM (TYPE 4)
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00C15
1. When there are no indications of “BCM”, “METER A/C AMP” or “IPDM E/R” on “SELECT SYSTEM” dis-
play of CONSULT-II, print the “SELECT SYSTEM”.
2. Print all the data of “SELF-DIAG RESULTS” for “ENGINE”, “A/T”, “ALL MODE AWD/4WD”, “BCM”,
“METER A/C AMP”, “ABS”, and “IPDM E/R” displayed on CONSULT-II.
3. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “ALL MODE AWD/4WD”, “BCM”,
“METER A/C AMP”, “ABS”, 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-140, "
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-
140, "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 integrated display system. Refer to AV- 8 5 , "
CAN Communication
Line Inspection" .
7. Attach the CAN DIAG MONITOR check sheet onto the check sheet. Refer to LAN-140, "
CHECK SHEET"
.
PKIA2093E
PKIA8260E
PKIA8343E
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CAN SYSTEM (TYPE 4)
LAN-139
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Revision: 2004 November 2004 FX35/FX45
8. Mark the “NG” or “UNKWN” item of the check sheet table with “v” from the result of CAN DIAG MONITOR
check sheet. Refer to LAN-140, "
CHECK SHEET" .
NOTE:
If “NG” is displayed on “CAN COMM” as “CAN DIAG MNTR” for the diagnosed control unit, replace the
control unit. Refer to AV- 8 5 , "
CAN Communication Line Inspection" .
9. According to the check sheet results (example), start inspection. Refer to LAN-142, "
CHECK SHEET
RESULTS (EXAMPLE)" .