steering NISSAN 350Z 2007 Z33 LAN System Workshop Manual

LAN-2Revision: 2006 November2007 350Z BRANCH LINE .................................................... 65
SHORT CIRCUIT ................................................ 65
Main Line Between VDC/TCS/ABS Control Unit and
Data Link Connector ............................................... 66
Main Line Between TCM and Data Link Connector ... 66
Main Line Between Data Link Connector and ABS
Actuator and Electric Unit (Control Unit) ................. 67
ECM Branch Line Circuit ........................................ 68
Air Bag Diagnosis Sensor Unit Branch Line Circuit ... 68
VDC/TCS/ABS Control Unit Branch Line Circuit .... 69TCM Branch Line Circuit ......................................... 69
BCM Branch Line Circuit ......................................... 70
Data Link Connector Branch Line Circuit ................ 71
Unified Meter and A/C Amp. Branch Line Circuit .... 71
Steering Angle Sensor Branch Line Circuit ............. 72
ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit .............................................................. 72
IPDM E/R Branch Line Circuit ................................. 73
CAN Communication Circuit ................................... 74

LAN-10
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Con-
trol Unit) Open Circuit
SKIB8740E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM

Reverse warning chime does not sound.

The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.
EPS control unit The steering effort increases.
Combination meter

The shift position indicator and OD OFF indicator turn OFF.

The speedometer is inoperative.

The odo/trip meter stops.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/RWhen the ignition switch is ON,

The headlamps (Lo) turn ON.

The cooling fan continues to rotate.

TROUBLE DIAGNOSIS
LAN-11
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 November2007 350Z
Example: CAN-H, CAN-L Harness Short Circuit
SKIB8741E
Unit name Symptom
ECM

Engine torque limiting is affected, and shift harshness increases.

Engine speed drops.
BCM

Reverse warning chime does not sound.

The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.

The room lamp does not turn ON.

The engine does not start (if an error or malfunction occurs while turning the igni-
tion switch is OFF.)

The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch is OFF.)
EPS control unit The steering effort increases.
Combination meter

The tachometer and the speedometer do not move.

Warning lamps turn ON.

Indicator lamps do not turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/RWhen the ignition switch is ON,

The headlamps (Lo) turn ON.

The cooling fan continues to rotate.

HOW TO USE THIS SECTION
LAN-41
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 November2007 350Z
HOW TO USE THIS SECTIONPFP:00008
CautionNKS004PN

This section describes information peculiar to a vehicle, sheets for trouble diagnosis, and inspection pro-
cedures.

For trouble diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Procedure" .
Abbreviation ListNKS004PO
Abbreviations in CAN communication signal chart, and the diagnosis sheet are as per the following list.
Abbreviation Unit nameSELECT SYSTEM
(CONSULT-III)CAN DIAG SUPPORT MNTR
(CONSULT-III)
A-BAG Air bag diagnosis sensor unit AIR BAG —
ABSABS actuator and electric unit (control unit)
ABS VDC/TCS/ABS
VDC/TCS/ABS control unit
BCM BCM BCM BCM/SEC
DLC Data link connector — —
ECM ECM ENGINE ECM
IPDM-E IPDM E/R IPDM E/R IPDM E/R
M&A Unified meter and A/C amp. METER/M&A METER/M&A
STRG Steering angle sensor — STRG
TCM TCM A/T TCM

LAN-44
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
TROUBLE DIAGNOSISPFP:00004
CAN Diagnostic Support MonitorNKS004PT
Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.
MONITOR ITEM LIST (CONSULT-III)
ECM
0: Error at present, 1 – 39: Error in the past (Number means the number of times the ignition switch is turned OFF→ON)
*: 39 or higher number is fixed at 39 until the self-diagnosis result is erased.
VDC/TCS/ABS Control Unit
CAUTION:
Never replace the unit even when “NG” is indicated on the “INITIAL DIAG” at this stage. Follow the trouble diagnosis proce-
dures. ITEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
ECMTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0
VDC/TCS/ABSWith VDC: Signal receiving status from the
VDC/TCS/ABS control unit
With TCS: Signal receiving status from the
ABS actuator and electric unit (control unit)
With ABS: Not used even though indicated
METER/M&ASignal receiving status from the unified
meter and A/C amp.
OKOK
or
1 – 39
*UNKWN 0
BCM/SEC Signal receiving status from the BCM
ICC
Not used even though indicated
HVAC
TCM Signal receiving status from the TCM OKOK
or
1 – 39
*UNKWN 0
EPS Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OKOK
or
1 – 39
*UNKWN 0
e4WD
Not used even though indicated
AWD/4WD
ITEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
ABSINITIAL DIAG Status of CAN controller
OKNG
Caution
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
TCM Signal receiving status from the TCM
METER/M&A Signal receiving status from the unified meter and A/C amp.
STRG Signal receiving status from the steering angle sensor

TROUBLE DIAGNOSIS
LAN-53
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 November2007 350Z
NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.
Manual mode signal R T
Not manual mode signal R T
Seat belt buckle switch signal R T
Stop lamp switch signal R T
Steering angle sensor signal R T
Front wiper stop position signal R T
High beam status signal RT
Hood switch signal R T
Low beam status signal RT
Rear window defogger control signal RT Signal name/Connecting unit
ECM
ABS
TCM
BCM
M&A
STRG
IPDM-E

LAN-64
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
Component Parts LocationNKS004RJ
Harness LayoutNKS004RK
Refer to PG-41, "Harness Layout" .
1. A/T assembly F6 2. ECM M71 3. VDC/TCS/ABS control unit B114
4. IPDM E/R E9 5. Unified meter and A/C amp. M48 6. Steering angle sensor M22
7. ABS actuator and electric unit
(control unit) E518. BCM M90 9. Data link connector M8
10. Air bag diagnosis sensor unit M55
PKID1095E

TROUBLE DIAGNOSIS
LAN-65
[CAN]
C
D
E
F
G
H
I
J
L
MA
B
LAN
Revision: 2006 November2007 350Z
Malfunction Area ChartNKS004RL
MAIN LINE
BRANCH LINE
SHORT CIRCUIT
Malfunction Area Reference
Main line between VDC/TCS/ABS control unit and data link con-
nectorLAN-66, "
Main Line Between VDC/TCS/ABS Control Unit and
Data Link Connector"
Main line between TCM and data link connectorLAN-66, "Main Line Between TCM and Data Link Connector"
Main line between data link connector and ABS actuator and
electric unit (control unit)LAN-67, "Main Line Between Data Link Connector and ABS
Actuator and Electric Unit (Control Unit)"
Malfunction Area Reference
ECM branch line circuitLAN-68, "
ECM Branch Line Circuit"
Air bag diagnosis sensor unit branch line circuitLAN-68, "Air Bag Diagnosis Sensor Unit Branch Line Circuit"
VDC/TCS/ABS control unit branch line circuitLAN-69, "VDC/TCS/ABS Control Unit Branch Line Circuit"
TCM branch line circuitLAN-69, "TCM Branch Line Circuit"
BCM branch line circuitLAN-70, "BCM Branch Line Circuit"
Data link connector branch line circuitLAN-71, "Data Link Connector Branch Line Circuit"
Unified meter and A/C amp. branch line circuitLAN-71, "Unified Meter and A/C Amp. Branch Line Circuit"
Steering angle sensor branch line circuitLAN-72, "Steering Angle Sensor Branch Line Circuit"
ABS actuator and electric unit (control unit) branch line circuitLAN-72, "ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit"
IPDM E/R branch line circuitLAN-73, "IPDM E/R Branch Line Circuit"
Malfunction Area Reference
CAN communication circuitLAN-74, "
CAN Communication Circuit"

LAN-72
[CAN]
TROUBLE DIAGNOSIS
Revision: 2006 November2007 350Z
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to DI-49, "
Power Sup-
ply and Ground Circuit Inspection" .
OK or NG
OK >>
Present error: Replace the unified meter and A/C amp. Refer to DI-55, "Removal and Installa-
tion of Unified Meter and A/C Amp." .

Past error: Error was detected in the unified meter and A/C amp. branch line.
NG >> Repair the power supply and the ground circuit.
Steering Angle Sensor Branch Line CircuitNKS0054U
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
(unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of steering angle sensor.
2. Check the resistance between the steering angle sensor harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the steering angle sensor branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the steering angle sensor. Refer to BRC-86, "
Schematic" .
OK or NG
OK >>
Present error: Replace the steering angle sensor. Refer to BRC-133, "Removal and Installa-
tion" .

Past error: Error was detected in the steering angle sensor branch line.
NG >> Repair the power supply and the ground circuit.
ABS Actuator and Electric Unit (Control Unit) Branch Line CircuitNKS0054V
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend
and loose connection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
Steering angle sensor harness connector
Resistance (Ω)
Connector No. Terminal No.
M22 4 5 Approx. 54 – 66