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LAN SYSTEM
K ELECTRICAL
A
B
SECTION
LAN SYSTEM C
D
E
CONTENTS
CAN Component Parts and Harness Connector Location 33 ... F
Schematic .............................................................. 34
.
PRECAUTIONS ......................................................... 3 . Wiring Diagram - CAN - ......................................... 35 .
Precautions for Supplemental Restraint System Work Flow .............................................................. 38
. G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CHECK SHEET .................................................. 39 .
SIONER" ................................................................. 3
. CHECK SHEET RESULTS (EXAMPLE) ............ 40 .
Precautions For Trouble Diagnosis ......................... 3 . Circuit Check Between Data Link Connector and
CAN SYSTEM ...................................................... 3 . H
VDC/TCS/ABS Control Unit ................................... 47 .
Precautions For Harness Repair ............................. 3 . ECM Circuit Check ................................................ 48 .
CAN SYSTEM ...................................................... 3 . Combination Meter Circuit Check .......................... 49 .
CAN COMMUNICATION ........................................... 4 . BCM Circuit Check ................................................ 49 . I
System Description ................................................. 4 . Steering Angle Sensor Circuit Check .................... 50 .
CAN Communication Unit ....................................... 4 . VDC/TCS/ABS Control Unit Circuit Check ............ 50 .
TYPE 1/TYPE 3 ................................................... 4 . IPDM E/R Circuit Check ........................................ 51 . J
TYPE 2 ................................................................. 6
. CAN Communication Circuit Check ....................... 52 .
CAN SYSTEM (TYPE 1) ............................................ 8 . IPDM E/R Ignition Relay Circuit Check ................. 54 .
System Description ................................................. 8 . Component Inspection ........................................... 54 .
Component Parts and Harness Connector Location 8 ..... LAN
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
Schematic ............................................................... 9
. TION ................................................................... 54
.
Wiring Diagram - CAN - ........................................ 10 . CAN SYSTEM (TYPE 3) .......................................... 55 .
Work Flow ............................................................. 13
. System Description ................................................ 55 . L
CHECK SHEET .................................................. 14 . Component Parts and Harness Connector Location 55 ...
CHECK SHEET RESULTS (EXAMPLE) ............ 15 . Schematic .............................................................. 56
.
Circuit Check Between TCM and Data Link Con- Wiring Diagram - CAN - ......................................... 57 . M
nector .................................................................... 24
. Work Flow .............................................................. 60
.
Circuit Check Between Data Link Connector and CHECK SHEET .................................................. 61 .
VDC/TCS/ABS Control Unit .................................. 25 . CHECK SHEET RESULTS (EXAMPLE) ............ 62 .
ECM Circuit Check ................................................ 26 . Circuit Check Between TCM and Data Link Con-
TCM Circuit Check ................................................ 26 . nector ..................................................................... 71
.
Combination Meter Circuit Check ......................... 27 . Circuit Check Between Data Link Connector and
BCM Circuit Check ................................................ 27 . VDC/TCS/ABS Control Unit ................................... 72 .
Steering Angle Sensor Circuit Check .................... 28 . ECM Circuit Check ................................................ 73 .
VDC/TCS/ABS Control Unit Circuit Check ............ 28 . TCM Circuit Check ................................................ 73 .
IPDM E/R Circuit Check ........................................ 29 . Combination Meter Circuit Check .......................... 74 .
CAN Communication Circuit Check ...................... 30 . BCM Circuit Check ................................................ 74 .
IPDM E/R Ignition Relay Circuit Check ................. 32 . Steering Angle Sensor Circuit Check .................... 75 .
Component Inspection .......................................... 32 . VDC/TCS/ABS Control Unit Circuit Check ............ 75 .
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC- IPDM E/R Circuit Check ........................................ 76 .
TION ................................................................... 32
. CAN Communication Circuit Check ....................... 77 .
CAN SYSTEM (TYPE 2) .......................................... 33 .
System Description ............................................... 33 .
Revision; 2004 April LAN-1 2003 G35 Sedan
IPDM E/R Ignition Relay Circuit Check .................. 79 . TION ...................................................................79
.
Component Inspection ........................................... 79
.
ECM/IPDM E/R INTERNAL CIRCUIT INSPEC-
Revision; 2004 April LAN-2 2003 G35 Sedan
PRECAUTIONS
[CAN]
PRECAUTIONS
[CAN] PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AKS000LU
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Precautions For Trouble Diagnosis AKS000BF
CAN SYSTEM
q Do not apply voltage of 7.0V or higher to the measurement terminals. H
q Use the tester with its open terminal voltage being 7.0V or less.
q Be sure to turn ignition switch off and disconnect negative battery terminal before checking the circuit.
I
Precautions For Harness Repair AKS000BG
CAN SYSTEM
q Solder the repaired parts, and wrap with tape. [Frays of twisted J
line must be within 110 mm (4.33 in)]
LAN
L
PKIA0306E M
q Do not perform bypass wire connections for the repair parts.
(The spliced wire will become separated and the characteristics
of twisted line will be lost.)
PKIA0307E
Revision; 2004 April LAN-3 2003 G35 Sedan
CAN COMMUNICATION
[CAN]
CAN COMMUNICATION PFP:23710
System Description AKS000D9
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.
CAN Communication Unit AKS000DA
Go to CAN system, when selecting your CAN system type from the following table.
Body type Sedan
Axle 2WD
Engine VQ35DE
Transmission A/T M/T
Brake control VDC
CAN system type 1 3 2
LAN-8 LAN-55
CAN system trouble diagnosis LAN-33
(Up to serial 329287*) (From serial 329288*)
*: For further information, refer to GI-47, "IDENTIFICATION NUMBER" .
TYPE 1/TYPE 3
System Diagram
SKIA6557E
Input/Output Signal Chart
T: Transmit R: Receive
Steering VDC/TCS/
Combina-
Signals ECM TCM BCM angle ABS IPDM E/R
tion meter
sensor control unit
Engine torque signal T R
Engine speed signal T R R R
Engine coolant temperature signal T R R
Accelerator pedal position signal T R R
Closed throttle position signal T R
Wide open throttle position signal T R
Battery voltage signal T R
Revision; 2004 April LAN-4 2003 G35 Sedan
CAN COMMUNICATION
[CAN]
Steering VDC/TCS/
Combina-
Signals ECM TCM BCM angle ABS IPDM E/R A
tion meter
sensor control unit
Stop lamp switch signal R T
Fuel consumption monitor signal T R B
A/T self-diagnosis signal R T
A/T CHECK indicator lamp signal T R
C
A/T position indicator signal T R R
ABS operation signal R T
A/T shift schedule change demand D
R T
signal
A/C switch signal R T
A/C compressor request signal T R E
A/C compressor feedback signal T R
Blower fan motor switch signal R T
F
Cooling fan motor operation signal T R
Position lights request signal R T R
Low beam request signal T R G
Low beam status signal R T
High beam request signal R T R
H
High beam status signal R T
Front fog lights request signal T R
R T I
Vehicle speed signal
R R T R
Sleep request 1 signal R T
J
Sleep request 2 signal T R
Wake up request 1 signal R T R
Wake up request 2 signal R T R LAN
Door switch signal (without naviga-
R T R
tion system)
Door switch signal (with navigation L
T R
system)
Turn indicator signal R T
Seat belt buckle switch signal T R M
Oil pressure switch signal R T
Buzzer output signal R T
ASCD SET lamp signal T R
ASCD CRUISE lamp signal T R
ASCD OD cancel request signal T R
ASCD operation signal T R
Output shaft revolution signal R T
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch signal T R
Rear window defogger control sig-
R T
nal
Manual mode signal R T
Revision; 2004 April LAN-5 2003 G35 Sedan
CAN COMMUNICATION
[CAN]
Steering VDC/TCS/
Combina-
Signals ECM TCM BCM angle ABS IPDM E/R
tion meter
sensor control unit
Not manual mode signal R T
Manual mode shift up signal R T
Manual mode shift down signal R T
Manual mode indicator signal T R
Hood switch signal R T
Theft warning horn request signal T R
Horn chirp signal T R
Steering angle sensor signal T R
Malfunction indicator lamp signal
T R
(Type 3 only: From serial 329288*)
Fuel level sensor signal
R T
(Type 3 only: From serial 329288*)
Turbine revolution signal
R T
(Type 3 only: From serial 329288*)
*: For further information, refer to GI-47, "IDENTIFICATION NUMBER" .
TYPE 2
System Diagram
SKIA6556E
Input/Output Signal Chart
T: Transmit R: Receive
Steering VDC/TCS/
Combina-
Signals ECM BCM angle ABS IPDM E/R
tion meter
sensor control unit
Engine speed signal T R R
Engine coolant temperature signal T R
Accelerator pedal position signal T R
Fuel consumption monitor signal T R
A/C switch signal R T
A/C compressor request signal T R
A/C compressor feedback signal T R
Blower fan motor switch signal R T
Cooling fan motor operation signal T R
Revision; 2004 April LAN-6 2003 G35 Sedan
CAN COMMUNICATION
[CAN]
Steering VDC/TCS/
Combina-
Signals ECM BCM angle ABS IPDM E/R A
tion meter
sensor control unit
Position lights request signal R T R
Low beam request signal T R B
Low beam status signal R R T
High beam request signal R T R
C
High beam status signal R R T
Front fog lights request signal T R
R T D
Vehicle speed signal
R T R
Sleep request 1 signal R T
E
Sleep request 2 signal T R
Wake up request 1 signal R T
Wake up request 2 signal R T F
Door switch signal (without navigation system) R T R
Door switch signal (with navigation system) T R
Turn indicator signal R T
G
Seat belt buckle switch signal T R
Oil pressure switch signal R T H
Buzzer output signal R T
Malfunction indicator lamp signal T R
ASCD SET lamp signal T R I
ASCD CRUISE lamp signal T R
Fuel level sensor signal R T
J
Front wiper request signal T R
Front wiper stop position signal R T
Rear window defogger switch signal T R LAN
Rear window defogger control signal R R T
Hood switch signal R T
L
Theft warning horn request signal T R
Horn chirp signal T R
Steering angle sensor signal T R M
Revision; 2004 April LAN-7 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
CAN SYSTEM (TYPE 1) PFP:23710
System Description AKS009BH
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 Location AKS009BI
SKIA2220E
Revision; 2004 April LAN-8 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Schematic AKS009BJ
A
B
C
D
E
F
G
H
I
J
LAN
L
M
TKWT0385E
Revision; 2004 April LAN-9 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Wiring Diagram - CAN - AKS009BK
TKWT0954E
Revision; 2004 April LAN-10 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
A
B
C
D
E
F
G
H
I
J
LAN
L
M
TKWT0955E
Revision; 2004 April LAN-11 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
TKWT0956E
Revision; 2004 April LAN-12 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Work Flow AKS00C40
A
1. Print all the data of "SELF-DIAG RESULTS" for "ENGINE", "A/T", "BCM" and "ABS" displayed on CON-
SULT-II.
B
C
D
PKIA8260E
E
2. Print all the data of "CAN DIAG SUPPORT MNTR" for "ENGINE", "A/T", "BCM" and "ABS" displayed on
CONSULT-II.
F
G
H
PKIA8343E
I
3. Attach the printed sheet of "SELF-DIAG RESULTS" and "CAN DIAG SUPPORT MNTR" onto the check
sheet. Refer to LAN-14, "CHECK SHEET" .
4. Based on the "CAN DIAG SUPPORT MNTR" results, put marks "v" onto the items with "NG", or "UNKWN"
in the check sheet table. Refer to LAN-14, "CHECK SHEET" . J
NOTE:
q If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" as "CAN DIAG SUPPORT MNTR" for the diag-
nosed control unit, replace the control unit. LAN
q 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 the "CAN DIAG SUPPORT MNTR" items not in check L
sheet table.
5. According to the check sheet results (example), start inspection. Refer to LAN-15, "CHECK SHEET
RESULTS (EXAMPLE)" . M
Revision; 2004 April LAN-13 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
CHECK SHEET
NOTE:
If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" as "CAN DIAG SUPPORT MNTR" for the diagnosed
control unit, replace the control unit.
PKIB0278E
Revision; 2004 April LAN-14 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
CHECK SHEET RESULTS (EXAMPLE)
NOTE: A
If "NG" is displayed on "INITIAL DIAG (Initial diagnosis)" as "CAN DIAG SUPPORT MNTR" for the diagnosed
control unit, replace the control unit.
Case 1 B
Check harness between TCM and data link connector. Refer to LAN-24, "Circuit Check Between TCM and
Data Link Connector" .
C
D
E
PKIB0280E
F
G
H
I
J
LAN
SKIA7111E
L
M
Revision; 2004 April LAN-15 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 2
Check harness between data link connector and VDC/TCS/ABS control unit. Refer to LAN-25, "Circuit Check
Between Data Link Connector and VDC/TCS/ABS Control Unit" .
PKIB0281E
SKIA7112E
Revision; 2004 April LAN-16 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 3
Check ECM circuit. Refer to LAN-26, "ECM Circuit Check" . A
B
C
D
PKIB0282E
E
F
G
H
I
SKIA7113E J
LAN
L
M
Revision; 2004 April LAN-17 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 4
Check TCM circuit. Refer to LAN-26, "TCM Circuit Check" .
PKIB0283E
SKIA7114E
Revision; 2004 April LAN-18 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 5
Check combination meter circuit. Refer to LAN-27, "Combination Meter Circuit Check" . A
B
C
D
PKIB0284E
E
F
G
H
I
SKIA7115E J
LAN
L
M
Revision; 2004 April LAN-19 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 6
Check BCM circuit. Refer to LAN-27, "BCM Circuit Check" .
PKIB0285E
SKIA7116E
Revision; 2004 April LAN-20 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 7
Check steering angle sensor circuit. Refer to LAN-28, "Steering Angle Sensor Circuit Check" . A
B
C
D
PKIB0286E
E
F
G
H
I
SKIA7117E J
LAN
L
M
Revision; 2004 April LAN-21 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 8
Check VDC/TCS/ABS control unit circuit. Refer to LAN-28, "VDC/TCS/ABS Control Unit Circuit Check" .
PKIB0287E
SKIA7118E
Revision; 2004 April LAN-22 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 9
Check IPDM E/R circuit. Refer to LAN-29, "IPDM E/R Circuit Check" . A
B
C
D
PKIB0288E
E
F
G
H
I
SKIA7119E J
LAN
L
M
Revision; 2004 April LAN-23 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
Case 10
Check CAN communication circuit. Refer to LAN-30, "CAN Communication Circuit Check" .
PKIB0289E
Case 11
Check IPDM E/R ignition relay circuit continuously sticks "OFF". Refer to LAN-32, "IPDM E/R Ignition Relay
Circuit Check" .
PKIB0291E
Case 12
Check IPDM E/R ignition relay circuit continuously sticks "ON". Refer to LAN-32, "IPDM E/R Ignition Relay Cir-
cuit Check" .
PKIB0290E
Circuit Check Between TCM and Data Link Connector AKS009BM
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).
q Harness connector F102
q Harness connector M72
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Revision; 2004 April LAN-24 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
2. CHECK HARNESS FOR OPEN CIRCUIT A
1. Disconnect TCM connector and harness connector F102.
2. Check continuity between TCM harness connector F103 termi-
nals 6 (L), 7 (R) and harness connector F102 terminals 35H (L), B
34H (R).
6 (L) - 35H (L) : Continuity should exist.
7 (R) - 34H (R) : Continuity should exist. C
OK or NG
OK >> GO TO 3. D
NG >> Repair harness.
SKIA1966E
E
3. CHECK HARNESS FOR OPEN CIRCUIT
Check continuity between harness connector M72 terminals 35H (L),
F
34H (R) and data link connector M8 terminals 6 (L), 3 (R).
35H (L) - 6 (L) : Continuity should exist.
34H (R) - 3 (R) : Continuity should exist. G
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-13, "Work Flow" . H
NG >> Repair harness.
SKIA1967E
I
Circuit Check Between Data Link Connector and VDC/TCS/ABS Control Unit
AKS009BN
1. CHECK CONNECTOR J
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal. LAN
3. Check following terminals and connectors for damage, bend and loose connection (connector side and
harness side).
q Harness connector M15 L
q Harness connector E108
OK or NG
OK >> GO TO 2. M
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect harness connector M15.
2. Check continuity between data link connector M8 terminals 6
(L), 3 (R) and harness connector M15 terminals 9G (L), 8G (R).
6 (L) - 9G (L) : Continuity should exist.
3 (R) - 8G (R) : Continuity should exist.
OK or NG
OK >> GO TO 3.
NG >> Repair harness.
SKIA1968E
Revision; 2004 April LAN-25 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
3. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect VDC/TCS/ABS control unit connector.
2. Check continuity between harness connector E108 terminals 9G
(L), 8G (R) and VDC/TCS/ABS control unit harness connector
E118 terminals 61 (L), 63 (R).
9G (L) - 61 (L) : Continuity should exist.
8G (R) - 63 (R) : Continuity should exist.
OK or NG
OK >> Connect all the connectors and diagnose again. Refer to
LAN-13, "Work Flow" .
NG >> Repair harness.
SKIA1973E
ECM Circuit Check AKS009BO
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.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector F101 termi-
nals 109 (L) and 113 (R).
109 (L) - 113 (R) : Approx. 108 - 132
OK or NG
OK >> Replace ECM.
NG >> Repair harness between harness connector F102 and
ECM.
LKIA0025E
TCM Circuit Check AKS009BP
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of TCM for damage, bend and loose connection (control module side and
harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair terminal or connector.
Revision; 2004 April LAN-26 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
2. CHECK HARNESS FOR OPEN CIRCUIT A
1. Disconnect TCM connector.
2. Check resistance between TCM harness connector F103 termi-
nals 6 (L) and 7 (R). B
6 (L) - 7 (R) : Approx. 54 - 66
OK or NG
C
OK >> Replace TCM.
NG >> Repair harness between harness connector F102 and
TCM.
D
SKIA1970E
E
Combination Meter Circuit Check AKS009BQ
1. CHECK CONNECTOR
F
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of combination meter for damage, bend and loose connection (meter side G
and harness side).
OK or NG
OK >> GO TO 2. H
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT I
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connec-
tor M20 terminals 28 (L) and 27 (R). J
28 (L) - 27 (R) : Approx. 54 - 66
OK or NG LAN
OK >> Replace combination meter.
NG >> Repair harness between data link connector and combi-
nation meter.
L
SKIA1971E
M
BCM Circuit Check AKS009BR
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.
Revision; 2004 April LAN-27 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect BCM connector.
2. Check resistance between BCM harness connector M3 termi-
nals 70 (L) and 71 (R).
70 (L) - 71 (R) : Approx. 54 - 66
OK or NG
OK >> Replace BCM. Refer to BCS-23, "Removal and Installa-
tion of BCM" .
NG >> Repair harness between data link connector and BCM.
LKIA0028E
Steering Angle Sensor Circuit Check AKS009BS
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.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect steering angle sensor connector.
2. Check resistance between steering angle sensor harness con-
nector M22 terminals 4 (L) and 5 (R).
4 (L) - 5 (R) : Approx. 54 - 66
OK or NG
OK >> Replace steering angle sensor.
NG >> Repair harness between data link connector and steer-
ing angle sensor.
PKIA0819E
VDC/TCS/ABS Control Unit Circuit Check AKS009BT
1. CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of VDC/TCS/ABS 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.
Revision; 2004 April LAN-28 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
2. CHECK HARNESS FOR OPEN CIRCUIT A
1. Disconnect VDC/TCS/ABS control unit connector.
2. Check resistance between VDC/TCS/ABS control unit harness
connector E118 terminals 61 (L) and 63 (R). B
61 (L) - 63 (R) : Approx. 54 - 66
OK or NG
C
OK >> Replace VDC/TCS/ABS control unit.
NG >> Repair harness between harness connector E108 and
VDC/TCS/ABS control unit.
D
SKIA1974E
E
IPDM E/R Circuit Check AKS009BU
1. CHECK CONNECTOR
F
1. Turn ignition switch OFF.
2. Disconnect the negative battery terminal.
3. Check terminals and connector of IPDM E/R for damage, bend and loose connection (control module side G
and harness side).
OK or NG
OK >> GO TO 2. H
NG >> Repair terminal or connector.
2. CHECK HARNESS FOR OPEN CIRCUIT I
1. Disconnect IPDM E/R connector.
2. Check resistance between IPDM E/R harness connector E9 ter-
minals 48 (L) and 49 (R). J
48 (L) - 49 (R) : Approx. 108 - 132
OK or NG LAN
OK >> Replace IPDM E/R.
NG >> Repair harness between harness connector E108 and
IPDM E/R.
L
LKIA0030E
M
Revision; 2004 April LAN-29 2003 G35 Sedan
CAN SYSTEM (TYPE 1)
[CAN]
CAN Communication Circuit Check AKS009BV
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, meter side, sensor side and harness side).
q ECM
q TCM
q Combination meter
q BCM
q Steering angle sensor
q VDC/TCS/ABS control unit
q IPDM E/R
q 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.
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