2008 NISSAN TEANA Service Manual

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Page 3073 of 5121

NISSAN TEANA 2008 Service Manual LAN-6
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
CAN COMMUNICATION SYSTEM
CAN Communication Control Circuit
INFOID:0000000003767667
*: These are the only control units wired with both ends of CAN communi

Page 3074 of 5121

NISSAN TEANA 2008 Service Manual LAN
DIAG ON CAN
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< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
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DIAG ON CAN
DescriptionINFOID:0000000003767668
“Diag on CAN” is a diagnosis using CAN communication inst

Page 3075 of 5121

NISSAN TEANA 2008 Service Manual LAN-8
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000003767670
“U1000” or “U1001” is indicated on SELF-DIAG RESULTS on CO

LAN-8
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000003767670
“U1000” or “U1001” is indicated on SELF-DIAG RESULTS on CONSULT-III if CAN communication signal is
not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR
CAN communication line open (CAN-H, CAN-L, or both)
CAN communication line short (ground, between CAN communication lines, other harnesses)
Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN “U1000” OR “U1001” IS INDICATED EVEN THOUGH CAN COMMUNICATION SYSTEM IS
NORMAL
Removal/installation of parts: Error may be detected when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
Fuse blown out (removed): CAN communication of the unit may cease.
Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition
switch ON (Depending on the control unit which carries out CAN communication).
Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
Error may be detected if reprogramming is not completed normally.
NOTE:
CAN communication system is normal if “U1000” or “U1001” is indicated on SELF-DIAG RESULTS of CON-
SULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.
Symptom When Error Occurs in CAN Communication SystemINFOID:0000000003767671
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
Refer to LAN-19, "
Abbreviation List" for the unit abbreviation.
Example: TCM branch line open circuit
SKIB8738E
Unit name Symptom
ECM Engine torque limiting is affected, and shift harshness increases.
BCM Reverse warning chime does not sound.

Page 3076 of 5121

NISSAN TEANA 2008 Service Manual LAN
TROUBLE DIAGNOSIS
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< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
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NOTE:
When data link connector branch line is

Page 3077 of 5121

NISSAN TEANA 2008 Service Manual LAN-10
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit
Example: CAN-H, CAN-L Har

Page 3078 of 5121

NISSAN TEANA 2008 Service Manual LAN
TROUBLE DIAGNOSIS
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CAN Diagnosis with CONSULT-IIIINFOID:0000000003767672
CAN diagnosis on CONSULT-III extracts the root

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TROUBLE DIAGNOSIS
LAN-11
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
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CAN Diagnosis with CONSULT-IIIINFOID:0000000003767672
CAN diagnosis on CONSULT-III extracts the root cause by receiving the following information.
Response to the system call
Control unit diagnosis information
Self-diagnosis
CAN diagnostic support monitor
Self-DiagnosisINFOID:0000000003767673
CAN Diagnostic Support MonitorINFOID:0000000003767674
MONITOR ITEM (CONSULT-III)
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 OFF.)
The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch 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.
DTCSelf-diagnosis item
(CONSULT-III indication)DTC detection condition Inspection/Action
U1000 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal of OBD (emission-related
diagnosis) for 2 seconds or more.
Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit. When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUITWhen ECM is not transmitting or receiving CAN
communication signal other than OBD (emis-
sion-related diagnosis) for 2 seconds or more.
U1002 SYSTEM COMMWhen a control unit is not transmitting or receiv-
ing CAN communication signal for 2 seconds or
less.
U1010 CONTROL UNIT [CAN]
When an error is detected during the initial diag-
nosis for CAN controller of each control unit.Replace the control unit
indicating “U1010” or
“P0607”. P0607 ECM

Page 3079 of 5121

NISSAN TEANA 2008 Service Manual LAN-12
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Example: CAN DIAG SUPPORT MNTR indication
Without PAST
With PAST
MONITOR ITEM (ON-BOARD DIAGNOSIS)
NOTE:
For some models, CAN communica

Page 3080 of 5121

NISSAN TEANA 2008 Service Manual LAN
TROUBLE DIAGNOSIS
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< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
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Example: Vehicle Display
How to Use CAN Communication Signal ChartINFOID:0000000003767675
The CAN co

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