NISSAN TEANA 2003 Service Manual

TROUBLE DIAGNOSIS
LAN-67
[CAN]
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CAN System (Type 4)BKS002DX
DIAGNOSIS SHEET
PKIC9845E

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-70
[CAN]
TROUBLE DIAGNOSIS

Main Line Between Driver Seat Control Unit and Data Link ConnectorBKS002E3
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–Harness connector B2
–Harness connector M103
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
–Harness connectors B116 and B46
–Harness connectors B2 and M103
2. Check the continuity between harness connectors.
OK or NG
OK >> GO TO 3.
NG >> Repair the main line between the harness connector B46 and B2.
3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
Check the continuity between the harness connector and the data link connector.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the driver seat control unit and the data
link connector.
NG >> Repair the main line between the harness connector M103 and the data link connector.
Harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
B462
B212 Yes
12 11 Yes
Harness connector Data link connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M10312
M326Yes
11 1 4 Ye s

TROUBLE DIAGNOSIS
LAN-71
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Main Line Between Data Link Connector and TCMBKS002E4
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect the ECM harness connector and the harness connector M55.
4. Check continuity between the data link connector and the harness connector.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the data link connector and the TCM.
NG >> Repair the main line between the data link connector and the harness connector M55.
Main Line Between TCM and ABS Actuator and Electric Unit (Control Unit)BKS002E5
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
–Harness connector M53
–Harness connector E103
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the following harness connectors.
–Harness connectors M55 and F102
–Harness connectors M53 and E103
2. Check the continuity between harness connectors.
OK or NG
OK >> GO TO 3.
NG >> Repair the main line between the harness connector M55 and M53.
Data link connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M326
M555Yes
14 3 Yes
Harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M555
M5319 Yes
318Yes

LAN-72
[CAN]
TROUBLE DIAGNOSIS

3. CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors E253 and E11.
2. Check the continuity between harness connectors.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the main line between the TCM and the ABS actuator and
electric unit (control unit).
NG >> Repair the main line between the harness connector E103 and E253.
ECM Branch Line CircuitBKS002E6
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
Models with automatic drive positioner
–ECM connector
–Harness connector M11
–Harness connector B3
Models without automatic drive positioner
–ECM connector
–Harness connector M11
–Harness connector B3
–Harness connector B2
–Harness connector M103
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ECM.
2. Check the resistance between the ECM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the ECM branch line.
Harness connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
E10319
E25312G Yes
18 13G Yes
ECM harness connector
Resistance (Ω)
Connector No. Terminal No.
M51 94 86 Approx. 108 – 132

TROUBLE DIAGNOSIS
LAN-73
[CAN]
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3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to EC-70, "
Circuit Diagram" (QR engine),
EC-413, "
Circuit Diagram" (VQ engine).
OK or NG
OK >>
Present error: Replace the ECM. Refer to EC-47, "Procedure After Replacing ECM" (QR
engine), EC-389, "
Procedure After Replacing ECM" (VQ engine).

Past error: Error was detected in the ECM branch line.
NG >> Repair the power supply and the ground circuit.
Driver Seat Control Unit Branch Line CircuitBKS002EE
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
–Driver seat control unit connector
–Harness connector B46
–Harness connector B116
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of driver seat control unit.
2. Check the resistance between the driver seat control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the driver seat control unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to SE-17, "
Schematic" .
OK or NG
OK >>
Present error: Replace the driver seat control unit. Refer to SE-103, "Removal and Installation"
.

Past error: Error was detected in the driver seat control unit branch line.
NG >> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
B117 2 12 Approx. 54 – 66

LAN-74
[CAN]
TROUBLE DIAGNOSIS

AFS Control Unit Branch Line CircuitBKS002E7
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 AFS 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.
2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of AFS control unit.
2. Check the resistance between the AFS control unit harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the AFS control unit branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AFS control unit. Refer to LT- 7 9 , "
Wiring Diagram —
AFS —" .
OK or NG
OK >>
Present error: Replace the AFS control unit. Refer to LT- 9 4 , "REMOVAL" .

Past error: Error was detected in the AFS control unit branch line.
NG >> Repair the power supply and the ground circuit.
BCM Branch Line CircuitBKS002E8
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 BCM for damage, bend and loose connection (unit side and
connector side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
AFS control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M93 2 5 Approx. 54 – 66

TROUBLE DIAGNOSIS
LAN-75
[CAN]
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2. CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of BCM.
2. Check the resistance between the BCM harness connector terminals.
OK or NG
OK >> GO TO 3.
NG >> Repair the BCM branch line.
3. CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the BCM. Refer to BCS-11, "
Schematic" .
OK or NG
OK >>
Present error: Replace the BCM. Refer to BCS-16, "Removal and Installation of BCM" .

Past error: Error was detected in the BCM branch line.
NG >> Repair the power supply and the ground circuit.
Data Link Connector Branch Line CircuitBKS002E9
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 data link connector for damage, bend and loose connection (con-
nector side and harness side).
OK or NG
OK >> GO TO 2.
NG >> Repair the terminal and connector.
2. CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.
OK or NG
OK >>
Present error: Check the following items again.
–Decision of CAN system type.
–Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).
–Procedure for detecting root cause.

Past error: Error was detected in the data link connector branch line circuit.
NG >> Repair the data link connector branch line.
BCM harness connector
Resistance (Ω)
Connector No. Terminal No.
M3 39 40 Approx. 54 – 66
Data link connector
Resistance (Ω)
Connector No. Terminal No.
M32 6 14 Approx. 54 – 66

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