ipdm INFINITI FX35 2004 Service Manual

LAN-40
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2004 November 2004 FX35/FX45
Case 13
Check CAN communication circuit. Refer to LAN-47, "CAN Communication Circuit Check" .
Case 14
Check IPDM E/R ignition relay circuit continuously sticks “OFF”. Refer to LAN-51, "IPDM E/R Ignition Relay
Circuit Check" .
PKIA7940E
PKIA7942E

CAN SYSTEM (TYPE 1)
LAN-41
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Case 15
Check IPDM E/R ignition relay circuit continuously sticks “ON”. Refer to LAN-51, "IPDM E/R Ignition Relay Cir-
cuit Check" .
Circuit Check Between TCM and Data Link ConnectorAKS00BZB
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-24, "
Work Flow" .
NG >> Repair harness.
Circuit Check Between Data Link Connector and Unified Meter and A/C Amp.AKS00BZC
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-24, "
Work Flow" .
NG >> Repair harness.
PKIA7941E
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

LAN-46
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2004 November 2004 FX35/FX45
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 CheckAKS00BZL
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.
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.
IPDM E/R Circuit CheckAKS00BZM
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).
–IPDM E/R connector
–Harness connector E205
–Harness connector B5
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.1 (L) - 11 (R) : Approx. 54 - 66Ω
SKIA6871E
11 (L) - 15 (R) : Approx. 54 - 66Ω
SKIA6872E

CAN SYSTEM (TYPE 1)
LAN-47
[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 IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (R).
OK or NG
OK >> Replace IPDM E/R.
NG >> Repair harness between IPDM E/R and ABS actuator
and electric unit (control unit).
CAN Communication Circuit CheckAKS00BZN
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,
unit side, sensor side, meter side, control unit side and harness side).
–ECM
–A/T assembly
–Display unit
–BCM
–Steering angle sensor
–Unified meter and A/C amp.
–ABS actuator and electric unit (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.48 (L) - 49 (R) : Approx. 108 - 132Ω
SKIA6873E

LAN-50
[CAN]
CAN SYSTEM (TYPE 1)
Revision: 2004 November 2004 FX35/FX45
7. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) harness connector E56 terminals 11 (L), 15 (R) and ground.
OK or NG
OK >> GO TO 8.
NG >> Check the following harnesses. If any harness is dam-
aged, repair the harness.

Harness between ABS actuator and electric unit (con-
trol unit) and harness connector E211

Harness between ABS actuator and electric unit (control unit) and harness connector E205
8. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between harness connector B5 terminals 3 (L) and
10 (R).
OK or NG
OK >> GO TO 9.
NG >> Repair harness between harness connector B5 and har-
ness connector B5.
9. CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between harness connector B5 terminals 3 (L), 10
(R) and ground.
OK or NG
OK >> GO TO 10.
NG >> Repair harness between harness connector B5 and har-
ness connector B5.
10. CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect IPDM E/R connector.
2. Check continuity between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (R).
OK or NG
OK >> GO TO 11.
NG >> Repair harness between IPDM E/R and harness con-
nector E205. 11 (L) - Ground : Continuity should not exist.
15 (R) - Ground : Continuity should not exist.
SKIA6876E
3 (L) - 10 (R) : Continuity should not exist.
SKIA6877E
3 (L) - Ground : Continuity should not exist.
10 (R) - Ground : Continuity should not exist.
SKIA6878E
48 (L) - 49 (R) : Continuity should not exist.
SKIA6873E

CAN SYSTEM (TYPE 1)
LAN-51
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
11 . 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 12.
NG >> Repair harness between IPDM E/R and harness con-
nector E205.
12. ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to LAN-51, "
ECM/IPDM E/R INTERNAL CIRCUIT INSPECTION" .
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to LAN-24, "Work Flow" .
NG >> Replace ECM and/or IPDM E/R.
IPDM E/R Ignition Relay Circuit CheckAKS00BZO
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 InspectionAKS00BZP
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

CAN SYSTEM (TYPE 2)
LAN-55
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Work FlowAKS00BZT
1. When there are no indications of “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”, “BCM”, “METER A/C AMP”, “ABS”,
“AUTO DRIVE POS.”, and “IPDM E/R” displayed on CONSULT-II.
3. Print all the data of “CAN DIAG SUPPORT MNTR” for “ENGINE”, “A/T”, “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-57, "
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-
57, "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-57, "
CHECK SHEET" .
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-57, "
CHECK SHEET" .
PKIA2093E
PKIA8260E
PKIA8343E

LAN-72
[CAN]
CAN SYSTEM (TYPE 2)
Revision: 2004 November 2004 FX35/FX45
Case 14
Check IPDM E/R circuit. Refer to LAN-81, "IPDM E/R Circuit Check" .
PKIA7958E
SKIA6583E

CAN SYSTEM (TYPE 2)
LAN-73
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2004 November 2004 FX35/FX45
Case 15
Check CAN communication circuit. Refer to LAN-82, "CAN Communication Circuit Check" .
Case 16
Check IPDM E/R ignition relay circuit continuously sticks “OFF”. Refer to LAN-86, "IPDM E/R Ignition Relay
Circuit Check" .
PKIA7959E
PKIA7961E

LAN-74
[CAN]
CAN SYSTEM (TYPE 2)
Revision: 2004 November 2004 FX35/FX45
Case 17
Check IPDM E/R ignition relay circuit continuously sticks “ON”. Refer to LAN-86, "IPDM E/R Ignition Relay Cir-
cuit Check" .
Circuit Check Between TCM and Data Link ConnectorAKS00BZU
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-55, "
Work Flow" .
NG >> Repair harness.
Circuit Check Between Data Link Connector and Unified Meter and A/C Amp.AKS00BZV
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-55, "
Work Flow" .
NG >> Repair harness.
PKIA7960E
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