NISSAN TIIDA 2007 Service Repair Manual

LAN
LAN-11
C
D
E
F
G
H
I
J
K
L B A
O
P N
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ..................................................................
427
Diagnosis Procedure .............................................427
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ..................................................................
428
Diagnosis Procedure .............................................428
ECM BRANCH LINE CIRCUIT .........................430
Diagnosis Procedure .............................................430
BCM BRANCH LINE CIRCUIT ........................431
Diagnosis Procedure .............................................431
DLC BRANCH LINE CIRCUIT .........................432
Diagnosis Procedure .............................................432
EPS BRANCH LINE CIRCUIT .........................433
Diagnosis Procedure .............................................433
M&A BRANCH LINE CIRCUIT ........................434
Diagnosis Procedure .............................................434
STRG BRANCH LINE CIRCUIT .......................435
Diagnosis Procedure .............................................435
AV BRANCH LINE CIRCUIT ............................436
Diagnosis Procedure .............................................436
ABS BRANCH LINE CIRCUIT .........................437
Diagnosis Procedure .............................................437
IPDM-E BRANCH LINE CIRCUIT ....................438
Diagnosis Procedure .............................................438
CAN COMMUNICATION CIRCUIT ..................439
Diagnosis Procedure .............................................439
CAN SYSTEM (TYPE 31)
COMPONENT DIAGNOSIS .......................
441
MAIN LINE BETWEEN DLC AND ABS CIR-
CUIT ..................................................................
441
Diagnosis Procedure .............................................441
ECM BRANCH LINE CIRCUIT .........................442
Diagnosis Procedure .............................................442
BCM BRANCH LINE CIRCUIT ........................443
Diagnosis Procedure .............................................443
DLC BRANCH LINE CIRCUIT .........................444
Diagnosis Procedure .............................................444
EPS BRANCH LINE CIRCUIT .........................445
Diagnosis Procedure .............................................445
I-KEY BRANCH LINE CIRCUIT .......................446
Diagnosis Procedure .............................................446
M&A BRANCH LINE CIRCUIT .......................447
Diagnosis Procedure .............................................447
STRG BRANCH LINE CIRCUIT .....................448
Diagnosis Procedure .............................................448
ABS BRANCH LINE CIRCUIT ........................449
Diagnosis Procedure .............................................449
IPDM-E BRANCH LINE CIRCUIT ...................450
Diagnosis Procedure .............................................450
CAN COMMUNICATION CIRCUIT .................451
Diagnosis Procedure .............................................451
CAN SYSTEM (TYPE 32)
COMPONENT DIAGNOSIS .......................
453
MAIN LINE BETWEEN DLC AND AV CIR-
CUIT ................................................................
453
Diagnosis Procedure .............................................453
MAIN LINE BETWEEN AV AND ABS CIR-
CUIT ................................................................
454
Diagnosis Procedure .............................................454
ECM BRANCH LINE CIRCUIT .......................456
Diagnosis Procedure .............................................456
BCM BRANCH LINE CIRCUIT .......................457
Diagnosis Procedure .............................................457
DLC BRANCH LINE CIRCUIT ........................458
Diagnosis Procedure .............................................458
EPS BRANCH LINE CIRCUIT ........................459
Diagnosis Procedure .............................................459
I-KEY BRANCH LINE CIRCUIT ......................460
Diagnosis Procedure .............................................460
M&A BRANCH LINE CIRCUIT .......................461
Diagnosis Procedure .............................................461
STRG BRANCH LINE CIRCUIT .....................462
Diagnosis Procedure .............................................462
AV BRANCH LINE CIRCUIT ..........................463
Diagnosis Procedure .............................................463
ABS BRANCH LINE CIRCUIT ........................464
Diagnosis Procedure .............................................464
IPDM-E BRANCH LINE CIRCUIT ...................465
Diagnosis Procedure .............................................465
CAN COMMUNICATION CIRCUIT .................466
Diagnosis Procedure .............................................466

LAN-12
< PRECAUTION >[CAN FUNDAMENTAL]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precautions for Trouble DiagnosisINFOID:0000000001162751
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 the battery cable from the negative terminal when
checking the harness.
Precautions for Harness RepairINFOID:0000000001162752
• 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

LAN
CAN COMMUNICATION SYSTEM
LAN-13
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L B A
O
P N
FUNCTION DIAGNOSIS
CAN COMMUNICATION SYSTEM
System DescriptionINFOID:0000000001162753
 CAN communication is a multiplex communication system. This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with two communication lines (CAN-H and
CAN-L).
 Control units on the CAN network transmit signals using the CAN communication control circuit. They
receive only necessary signals from other control units to operate various functions.
 CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
System DiagramINFOID:0000000001162754
Each control unit passes an electric current to the termination circuits when transmitting CAN communication
signal. The termination circuits produce an electrical 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-14, "
CAN Communication Control Circuit".

LAN-14
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
CAN COMMUNICATION SYSTEM
CAN Communication Control Circuit
INFOID:0000000001162755
*: 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 ICIt 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.

LAN
DIAG ON CAN
LAN-15
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L B A
O
P N
DIAG ON CAN
DescriptionINFOID:0000000001162756
“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:0000000001162757
SKIB8714E
Name Harness Description
DDL1Tx
RxIt 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 CANCAN-H
CAN-LIt is used for trouble diagnosis and control.

LAN-16
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Condition of Error DetectionINFOID:0000000001162758
“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:0000000001162759
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-27, "
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.

LAN
TROUBLE DIAGNOSIS
LAN-17
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L B A
O
P N Example: Data link connector branch line open circuit
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 occurs. The error is judged by the symptom.
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.Unit name Symptom
SKIB8739E
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-circuitMost of the units which are connected to the CAN communication
system enter fail-safe mode or are deactivated.

LAN-18
< 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 Harness Short 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 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/RWhen the ignition switch is ON,
 The headlamps (Lo) turn ON.
 The cooling fan continues to rotate.
SKIB8741E

LAN
TROUBLE DIAGNOSIS
LAN-19
< FUNCTION DIAGNOSIS >[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L B A
O
P N
CAN Diagnosis with CONSULT-IIIINFOID:0000000001162760
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:0000000001162761
CAN Diagnostic Support MonitorINFOID:0000000001162762
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”.

LAN-20
< 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 communication diagnosis result is received from the vehicle monitor.
JSMIA0015GB
Item PRSNT Description
Initial diagnosisOK Normal at present
NG Control unit error (Except for some control units)
Transmission diagnosisOK Normal at present
UNKWNUnable to transmit signals for 2 seconds or more.
Diagnosis not performed
Control unit name
(Reception diagnosis)OK Normal at present
UNKWNUnable to receive signals for 2 seconds or more.
Diagnosis not performed
No control unit for receiving signals. (No applicable optional parts)
Item PRSNT PAST Description
Transmission diagnosisOKOK Normal at present and in the past
1 – 39Normal at present, but unable to transmit signals for 2 seconds or more
in the past. (The number indicates the number of ignition switch cycles
from OFF to ON.)
UNKWN 0 Unable to transmit signals for 2 seconds or more at present.
Control unit name
(Reception diagnosis)OKOK Normal at present and in the past
1 – 39Normal at present, but unable to receive signals for 2 seconds or more
in the past. (The number indicates the number of ignition switch cycles
from OFF to ON.)
UNKWN 0 Unable to receive signals for 2 seconds or more at present.
––Diagnosis not performed.
No control unit for receiving signals. (No applicable optional parts)