Unified NISSAN TEANA 2003 Service Manual

LAN-2 Harness Layout ...................................................... 68
Malfunction Area Chart ........................................... 69
MAIN LINE ........................................................... 69
BRANCH LINE .................................................... 69
SHORT CIRCUIT ................................................ 69
Main Line Between Driver Seat Control Unit and
Data Link Connector ............................................... 70
Main Line Between Data Link Connector and TCM ... 71
Main Line Between TCM and ABS Actuator and
Electric Unit (Control Unit) ...................................... 71
ECM Branch Line Circuit ........................................ 72
Driver Seat Control Unit Branch Line Circuit .......... 73
AFS Control Unit Branch Line Circuit ..................... 74BCM Branch Line Circuit ......................................... 74
Data Link Connector Branch Line Circuit ................ 75
Intelligent Key Unit Branch Line Circuit ................... 76
Unified Meter and A/C Amp. Branch Line Circuit .... 76
Steering Angle Sensor Branch Line Circuit ............. 77
Display Control Unit Branch Line Circuit ................. 78
Display Unit Branch Line Circuit ............................. 78
TCM Branch Line Circuit (Models with A/T) ............ 79
TCM Branch Line Circuit (Models with CVT) .......... 80
ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit .............................................................. 80
IPDM E/R Branch Line Circuit ................................. 81
CAN Communication Circuit ................................... 82

HOW TO USE THIS SECTION
LAN-41
[CAN]
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HOW TO USE THIS SECTIONPFP:00008
CautionBKS002DH

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

For trouble diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Procedure" .
Abbreviation ListBKS002DI
Abbreviations in CAN communication signal chart and the diagnosis sheet are as per the following list.
Abbreviation Unit nameSELECT SYSTEM
(CONSULT-II)CAN DIAG SUPPORT MNTR
(CONSULT-II)
ABS ABS actuator and electric unit (control unit) ABS VDC/TCS/ABS
ADP Driver seat control unit AUTO DRIVE POS. –
AFS AFS control unit ADAPTIVE LIGHT –
BCM BCM BCM BCM/SEC
DISPDisplay unit
– DISPLAY
Display control unit
DLC Data link connector – –
ECM ECM ENGINE ECM
I-KEY Intelligent Key unit INTELLIGENT KEY I-KEY
IPDM-E IPDM E/R IPDM E/R IPDM E/R
M&A Unified meter and A/C amp. METER A/C AMP METER/M&A
STRG Steering angle sensor – STRG
TCM TCMA/T
TCM
TRANSMISSION

LAN-44
[CAN]
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSISPFP:00004
CAN Diagnostic Support MonitorBKS002DN
Use “CAN DIAG SUPPORT MNTR” for detecting the root cause.
MONITOR ITEM LIST (CONSULT-II)
ECM
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
Driver seat control unit
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
AFS control unit
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.SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
ENGINEINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN TCM Signal receiving status from the TCM
VDC/TCS/ABSModels with VDC: Signal receiving status from the ABS actuator
and electric unit (control unit)
Models with ABS: Not used even though indicated
METER/M&A Signal receiving status from the unified meter and A/C amp. OK UNKWN
ICC Not used even though indicated
BCM/SEC Signal receiving status from the BCM
OK UNKWN
IPDM E/R Signal receiving from the IPDM E/R
AWD/4WD/e4WD
Not used even though indicated
EPS
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
AUTO DRIVE
POS.INITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN BCM/SEC Signal receiving status from the BCM
METER/M&A Signal receiving status from the unified meter and A/C amp.
TCM Signal receiving status from the TCM
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
ADAPTIVE
LIGHTTRANSMIT DIAG Not used even though indicated
ECM Signal receiving status from the ECM
OKOK
or
1 – 39
*UNKWN 0 METER/M&ASignal receiving status from the unified
meter and A/C amp.
TCM Signal receiving status from the TCM
STRGSignal receiving status from the steering
angle sensor
EPS Not used even though indicated
IPDM E/R Signal receiving status from the IPDM E/R OKOK
or
1 – 39
*UNKWN 0

TROUBLE DIAGNOSIS
LAN-45
[CAN]
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BCM
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
Intelligent Key unit
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.
Unified meter and A/C amp.
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.SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
BCMINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
IPDM E/R Signal receiving from the IPDM E/R
METER/M&A Signal receiving status from the unified meter and A/C amp.
I-KEY Not used even though indicated
TCM Signal receiving status from the TCM OK UNKWN
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
INTELLIGENT
KEYTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
METER/M&ASignal receiving status from the unified
meter and A/C amp.
BCM/SEC Signal receiving status from the BCM
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
METER A/C AMPTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39
*UNKWN 0 ECM Signal receiving status from the ECM
TCM Signal receiving status from the TCM
BCM/SEC Signal receiving status from the BCM
VDC/TCS/ABSSignal receiving status from the ABS actu-
ator and electric unit (control unit)
IPDM E/R Not used even though indicated
DISPLAYModels with color display: Signal receiving
status from the display control unit
OKOK
or
1 – 39
*UNKWN 0 Models without color display: Signal
receiving status from the display unit
I-KEYSignal receiving status from the Intelligent
Key unit
EPS
Not used even though indicated AW D/4W D
e4WD
ICC
LANE KEEP
TIRE-P

LAN-46
[CAN]
TROUBLE DIAGNOSIS

TCM (Models with A/T)
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
TCM (Models with CVT)
NOTE:
Replace the unit when “NG” is indicated on the “INITIAL DIAG”.
ABS actuator and electric unit (control unit) (Models with ABS)
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.
ABS actuator and electric unit (control unit) (Models with VDC)
CAUTION:
Never replace the unit even when “NG” is indicated on the “INITIAL DIAG” at this stage. Follow the trouble diagnosis proce-
dures. SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
A/TINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
VDC/TCS/ABSModels with VDC: Signal receiving status from the ABS actuator
and electric unit (control unit)
Models with ABS: Not used even though indicated
METER/M&ASignal receiving status from the unified meter and A/C amp.
meterOK UNKWN
ICC/e4WD Not used even though indicated
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT
TRANSMISSIONINITIAL DIAG Status of CAN controller
OKNG
TRANSMIT DIAG Signal transmission status
UNKWN ECM Signal receiving status from the ECM
VDC/TCS/ABSSignal receiving status from the ABS actuator and electric unit
(control unit)
METER/M&A Signal receiving status from the unified meter and A/C amp.
ICC Not used even though indicated
SELECT SYS-
TEMCAN DIAG SUP-
PORT MNTRDescriptionNormal Error
PRSNT PAST PRSNT PAST
ABSTRANSMIT DIAG Signal transmission status
OKOK
or
1 – 39*UNKWN 0
ECM Signal receiving status from the ECM
SELECT SYS-
TEMCAN 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 Not used even though indicated
STRG Signal receiving status from the steering angle sensor OK UNKWN
ICC Not used even though indicated

LAN-48
[CAN]
TROUBLE DIAGNOSIS

MONITOR ITEM LIST (ON-BOARD DIAGNOSIS)
Display control unit
NOTE:
CAN diagnostic support monitor of the display control unit is indicated on the vehicle display.

Models with color display: Refer to AV- 9 3 , "CAN DIAGNOSIS" .
*: The error counter stops counting when it reaches “50” and holds “50” until it is reset.
PKIC9893E
Unit name Diagnosis item DescriptionIndicated items on CAN DIAG SUPPORT MONITOR
Normal Error
Result indi-
catedError
counter
(Reference)Result indi-
catedError
counter
(Reference)
Display control
unitCommunication Status of CAN controller
OK0
or
1 – 50*NG
1 – 50* CAN System 1 Signal transmission status
UNKWN CAN System 2Signal receiving status from the
BCM
CAN System 3Signal receiving status from the
ECM
CAN System 4 Not used even though indicated
CAN System 5Signal receiving status from the
unified meter and A/C amp.OK0
or
1 – 50*UNKWN 1 – 50*
CAN System 6 Not used even though indicated
CAN System 7Signal receiving status from the
IPDM E/ROK0
or
1 – 50*UNKWN 1 – 50*
CAN System 8
Not used even though indicated
CAN System 9

LAN-68
[CAN]
TROUBLE DIAGNOSIS

Component Parts LocationBKS002E0
Harness LayoutBKS002E1
Refer to PG-42, "Harness Layout" .
1. TCM
F104: Models with A/T
F106: Models with CVT2. ECM M51 3. ABS actuator and electric unit
(control unit)
E240: Models with ABS
E241: Models with VDC
4. IPDM E/R E9 5. Intelligent Key unit M31 6. Display control unit M83: Models
with color display
Display unit M47: Models without
color display
7. Steering angle sensor M26 8. BCM M3 9. AFS control unit M93
10. Data link connector M32 11. Unified meter and A/C amp.
M4112. Driver seat control unit B117
PKIC9855E

TROUBLE DIAGNOSIS
LAN-69
[CAN]
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Malfunction Area ChartBKS002E2
MAIN LINE
BRANCH LINE
SHORT CIRCUIT
Malfunction Area Reference
Main line between driver seat control unit and data link connec-
torLAN-70, "
Main Line Between Driver Seat Control Unit and Data
Link Connector"
Main line between data link connector and TCMLAN-71, "Main Line Between Data Link Connector and TCM"
Main line between TCM and ABS actuator and electric unit (con-
trol unit)LAN-71, "Main Line Between TCM and ABS Actuator and Elec-
tric Unit (Control Unit)"
Malfunction Area Reference
ECM branch line circuit LAN-72, "
ECM Branch Line Circuit"
Driver seat control unit branch line circuit LAN-73, "Driver Seat Control Unit Branch Line Circuit"
AFS control unit branch line circuit LAN-74, "AFS Control Unit Branch Line Circuit"
BCM branch line circuit LAN-74, "BCM Branch Line Circuit"
Data link connector branch line circuit LAN-75, "Data Link Connector Branch Line Circuit"
Intelligent Key unit branch line circuit LAN-76, "Intelligent Key Unit Branch Line Circuit"
Unified meter and A/C amp. branch line circuit LAN-76, "Unified Meter and A/C Amp. Branch Line Circuit"
Steering angle sensor branch line circuit LAN-77, "Steering Angle Sensor Branch Line Circuit"
Display control unit branch line circuit LAN-78, "Display Control Unit Branch Line Circuit"
Display unit branch line circuit LAN-78, "Display Unit Branch Line Circuit"
TCM branch line circuit (Models with A/T)LAN-79, "TCM Branch Line Circuit (Models with A/T)"
TCM branch line circuit (Models with CVT)LAN-80, "TCM Branch Line Circuit (Models with CVT)"
ABS actuator and electric unit (control unit) branch line circuit LAN-80, "ABS Actuator and Electric Unit (Control Unit) Branch
Line Circuit"
IPDM E/R branch line circuit LAN-81, "IPDM E/R Branch Line Circuit"
Malfunction Area Reference
CAN communication circuitLAN-82, "
CAN Communication Circuit"

LAN-76
[CAN]
TROUBLE DIAGNOSIS

Intelligent Key Unit Branch Line CircuitBKS002EB
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 Intelligent Key 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.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of Intelligent Key unit.
2. Check the resistance between the Intelligent Key unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the Intelligent Key unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the Intelligent Key unit. Refer to BL-78, "
Schematic" .
OK or NG
OK >>
Present error: Replace the Intelligent Key unit. Refer to BL-117, "Removal and Installation of
Intelligent Key Unit" .

Past error: Error was detected in the Intelligent Key unit branch line.
NG >> Repair the power supply and the ground circuit.
Unified Meter and A/C Amp. Branch Line CircuitBKS002EC
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 unified meter and A/C amp. for damage, bend and loose con-
nection (unit side and connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
Intelligent Key unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M31 2 3 Approx. 54 – 66

TROUBLE DIAGNOSIS
LAN-77
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of unified meter and A/C amp.
2. Check the resistance between the unified meter and A/C amp. harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the unified meter and A/C amp. branch line.
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-28, "
Schematic" .
OK or NG
OK >>
Present error: Replace the unified meter and A/C amp. Refer to DI-34, "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 CircuitBKS002ED
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-48, "
Schematic"
(Models with VDC), LT- 7 9 , "Wiring Diagram — AFS —" (Models with AFS).
OK or NG
OK >>
Present error: Replace the steering angle sensor. Refer to BRC-91, "Removal and Installation"
(Models with VDC), LT- 9 4 , "REMOVAL" (Models with AFS).

Past error: Error was detected in the steering angle sensor branch line.
NG >> Repair the power supply and the ground circuit.
Unified meter and A/C amp. harness connector
Resistance (Ω)
Connector No. Terminal No.
M41 1 11 Approx. 54 – 66
Steering angle sensor harness connector
Resistance (Ω)
Connector No. Terminal No.
M26 4 5 Approx. 54 – 66