NISSAN LATIO 2011 Service Repair Manual

LAN-5
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Diagnosis Procedure ...........................................
..
164
DLC BRANCH LINE CIRCUIT .........................165
Diagnosis Procedure ........................................... ..165
EPS BRANCH LINE CIRCUIT .........................166
Diagnosis Procedure ........................................... ..166
M&A BRANCH LINE CIRCUIT ........................167
Diagnosis Procedure ........................................... ..167
STRG BRANCH LINE CIRCUIT .......................168
Diagnosis Procedure ........................................... ..168
ABS BRANCH LINE CIRCUIT .........................169
Diagnosis Procedure ........................................... ..169
TCM BRANCH LINE CIRCUIT .........................170
Diagnosis Procedure ........................................... ..170
IPDM-E BRANCH LINE CIRCUIT ....................171
Diagnosis Procedure ........................................... ..171
CAN COMMUNICATION CIRCUIT ..................172
Diagnosis Procedure ........................................... ..172
CAN SYSTEM (TYPE 13)
SERVICE INFORMATION .. .......................
174
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ................................................................ ..
174
Diagnosis Procedure ........................................... ..174
ECM BRANCH LINE CIRCUIT .......................175
Diagnosis Procedure ........................................... ..175
BCM BRANCH LINE CIRCUIT .......................176
Diagnosis Procedure .............................................176
DLC BRANCH LINE CIRCUIT ........................177
Diagnosis Procedure .............................................177
EPS BRANCH LINE CIRCUIT ........................178
Diagnosis Procedure .............................................178
I-KEY BRANCH LINE CIRCUIT ......................179
Diagnosis Procedure .............................................179
M&A BRANCH LINE CIRCUIT .......................180
Diagnosis Procedure .............................................180
STRG BRANCH LINE CIRCUIT .....................181
Diagnosis Procedure .............................................181
ABS BRANCH LINE CIRCUIT ........................182
Diagnosis Procedure .............................................182
TCM BRANCH LINE CIRCUIT ........................183
Diagnosis Procedure .............................................183
IPDM-E BRANCH LINE CIRCUIT ...................184
Diagnosis Procedure .............................................184
CAN COMMUNICATION CIRCUIT .................185
Diagnosis Procedure .............................................185
Revision: May 2010 2011 Versa

LAN-6
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000005928512
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
• Use a tester with open terminal voltage of 7.0 V or less.
• Turn the ignition switch OFF and disconnect th
e battery cable from the negative terminal when
checking the harness.
Precautions for Harness RepairINFOID:0000000005928513
• Solder the repaired area and wrap tape around the soldered area. NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
• Bypass connection is never allowed at the repaired area. NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and the characteristics of twisted
line are lost.
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica- tion line.
SKIB8766E
SKIB8767E
Revision: May 2010 2011 Versa

CAN COMMUNICATION SYSTEMLAN-7
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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CAN COMMUNICATION SYSTEM
System DescriptionINFOID:0000000005928514
• CAN communication is a multiplex communication system. This enables the system to transmit and receive
large quantities of data at high speed by connecting c ontrol units with two communication lines (CAN-H and
CAN-L).
• Control units on the CAN network transmit signals us ing the CAN communication control circuit. They
receive only necessary signals from other c ontrol units to operate various functions.
• CAN communication lines adopt twisted-pair line st yle (two lines twisted) for noise immunity.
System DiagramINFOID:0000000005928515
Each control unit passes an electric current to the termination circuits when transmitting CAN communication
signal. The termination circuits produce an electric al potential difference between CAN-H and CAN-L. CAN
communication system transmits and receives CAN communication signals by the potential difference.
SKIB8887E
Component Description
Main line CAN communication line between splices
Branch line CAN communication line between splice and a control unit
Splice A point connecting a branch line with a main line
Termination circuit Refer to LAN-8, "
CAN Communication Control Circuit".
Revision: May 2010 2011 Versa

LAN-8
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
CAN COMMUNICATION SYSTEM
CAN Communication Control Circuit
INFOID:0000000005928516
*: These are the only control units wired with both ends of CAN communication system.
SKIB8713E
Component System description
CAN controller It controls CAN communication signal transmission and reception, error detection, etc.
Transceiver IC It converts digital signal into CAN communication signal, and CAN communication signal into digital
signal.
Noise filter It eliminates noise of CAN communication signal.
Termination circuit
*
(Resistance of approx. 120 Ω) It produces potential difference.
Revision: May 2010
2011 Versa

DIAG ON CANLAN-9
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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DIAG ON CAN
DescriptionINFOID:0000000005928517
“Diag on CAN” is a diagnosis using CAN communication instead of previous DDL1 and DDL2 communication
lines, between control units and diagnosis unit.
System DiagramINFOID:0000000005928518
SKIB8714E
Name Harness Description
DDL1 Tx
Rx
It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
DDL2 K-LINE It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
Diag on CAN CAN-H
CAN-L It is used for trouble diagnosis and control.
Revision: May 2010
2011 Versa

LAN-10
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000005928519
DTC of CAN communication is indicated on SELF-DIAG
RESULTS on CONSULT-III if a CAN communication
signal is not transmitted or received between units for 2 seconds or more.
NOTE:
DTCs of CAN communication are as follows:
• U0101
• U0140
• U0164
• U1000
• U1001
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 DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION
SYSTEM IS NORMAL
• Removal/installation of parts: Error may be detec ted 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 co mmunication 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.
CAUTION:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG
RESULTS of CONSULT-III under th e above conditions. Erase the memo ry of the self-diagnosis of each
unit.
Symptom When Error Occurs in CAN Communication SystemINFOID:0000000005928520
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communicati on 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-22, "
Abbreviation List" for the unit abbreviation.
Revision: May 2010 2011 Versa

TROUBLE DIAGNOSISLAN-11
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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Example: TCM branch line open circuit
Example: Data link connector 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.
EPS control unit Normal operation.
Combination meter • Shift position indicator and OD OFF indicator turn OFF.
• Warning lamps turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R Normal operation.
SKIB8739E
Revision: May 2010 2011 Versa

LAN-12
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
NOTE:
• When data link connector branch line is open, transmission and reception of CAN communication signals
are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning circuit.
• The model (all units on CAN communication system are Diag on CAN) cannot perform CAN diagnosis with
CONSULT-III if the following error occu rs. The error is judged by the symptom.
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Un it (Control Unit) Open Circuit
Unit name Symptom
ECM
Normal operation.
BCM
EPS control unit
Combination meter
ABS actuator and electric unit (control unit)
TCM
IPDM E/R
Error Difference of symptom
Data link connector branch line open circuit Normal operation.
CAN-H, CAN-L harness short-circuit Most of the units which are connected to the CAN communication
system enter fail-safe mode or are deactivated.
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 wip-
er 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/R When the ignition switch is ON,
• The headlamps (Lo) turn ON.
• The cooling fan continues to rotate.
Revision: May 2010
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TROUBLE DIAGNOSISLAN-13
< SERVICE INFORMATION > [CAN FUNDAMENTAL]
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Example: CAN-H, CAN-L Harness Short Circuit
CAN Diagnosis with CONSULT-IIIINFOID:0000000005928521
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
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 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/R When the ignition switch is ON,
• The headlamps (Lo) turn ON.
• The cooling fan continues to rotate.
Revision: May 2010
2011 Versa

LAN-14
< SERVICE INFORMATION >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Self-Diagnosis
INFOID:0000000005928522
CAN Diagnostic Support MonitorINFOID:0000000005928523
MONITOR ITEM (CONSULT-III)
Example: CAN DIAG SUPPORT MNTR indication
Without PAST
DTC Self-diagnosis item
(CONSULT-III indication) DTC detection condition
Inspection/Action
U0101 LOST COMM (TCM) When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from
TCM for 2 seconds or more.
Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
U0140 LOST COMM (BCM)
When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from
BCM for 2 seconds or more.
U0164 LOST COMM (HVAC) When ECM is not transmitting or receiving CAN communi-
cation signal of OBD (emission-related diagnosis) from A/
C auto amp. or unified meter and A/C amp. for 2 seconds
or more.
U1000 CAN COMM CIRCUIT ECM
When ECM is not transmitting or receiving CAN
communication signal of OBD (emission-relat-
ed diagnosis) for 2 seconds or more.
Except
for ECM When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001 CAN COMM CIRCUIT When ECM is not transmitting or receiving CAN communi-
cation signal other than OBD (emission-related diagnosis)
for 2 seconds or more.
U1002 SYSTEM COMM When a control unit is not transmitting or receiving CAN
communication signal for 2 seconds or less.
U1010 CONTROL UNIT(CAN) When an error is detected during the initial diagnosis for
CAN controller of each control unit. Replace the control unit
indicating “U1010” or
“P0607”.
P0607
ECM
JSMIA0015GB
ItemPRSNT Description
Initial diagnosis OK Normal at present
NG Control unit error (Excep t for some control units)
Revision: May 2010 2011 Versa