Nissan Juke (2016 year). Service Repair Manual — part 459
LAN
TROUBLE DIAGNOSIS
LAN-11
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG
RESULTS of CONSULT under the above conditions. Erase the memory of the self-diagnosis of each
unit.
Symptom When Error Occurs in CAN Communication System
INFOID:0000000012200494
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.
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit
JSMIA0442GB
Unit name
Major 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: November 2015
2016 JUKE
LAN-12
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Example: TCM Branch Line Open Circuit
NOTE:
The model (all units on CAN communication system are Diag on CAN) cannot perform CAN diagnosis with
CONSULT if the following error occurs. The error is judged by the symptom.
Example: Data Link Connector Branch Line Open Circuit
JSMIA0443GB
Unit name
Major 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 O/D 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.
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.
JSMIA0444GB
Revision: November 2015
2016 JUKE
LAN
TROUBLE DIAGNOSIS
LAN-13
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
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.
Example: CAN-H, CAN-L Harness Short Circuit
CAN Diagnosis with CONSULT
INFOID:0000000012200495
CAN diagnosis on CONSULT extracts the root cause by receiving the following information.
Unit name
Major symptom
ECM
Normal operation.
BCM
EPS control unit
Combination meter
ABS actuator and electric unit (control unit)
TCM
IPDM E/R
JSMIA0445GB
Unit name
Major 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: November 2015
2016 JUKE
LAN-14
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
• Response to the system call
• Control unit diagnosis information
• Self-diagnosis
• CAN diagnostic support monitor
Self-Diagnosis
INFOID:0000000012200496
If communication signals cannot be transmitted or received among units communicating via CAN communica-
tion line, CAN communication-related DTC is displayed on the CONSULT “Self Diagnostic Result” screen.
NOTE:
The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applica-
ble sections.
CAN Diagnostic Support Monitor
INFOID:0000000012200497
MONITOR ITEM (CONSULT)
Example: CAN DIAG SUPPORT MNTR indication
Without PAST
DTC
Self-diagnosis item
(CONSULT indication)
DTC detection condition
Inspection/Action
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.
Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
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”.
JSMIA0964GB
Item
PRESENT
Description
Initial diagnosis
OK
Normal at present
NG
Control unit error (Except for some control units)
Revision: November 2015
2016 JUKE
LAN
TROUBLE DIAGNOSIS
LAN-15
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
With PAST
Transmission diagnosis
OK
Normal at present
UNKWN
Unable to transmit signals for 2 seconds or more.
Diagnosis not performed
Control unit name
(Reception diagnosis)
OK
Normal at present
UNKWN
Unable to receive signals for 2 seconds or more.
Diagnosis not performed
No control unit for receiving signals. (No applicable optional parts)
Item
PRESENT
Description
Item
PRESENT
PAST
Description
Transmission diagnosis
OK
OK
Normal at present and in the past
1 – 39
Normal 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)
OK
OK
Normal at present and in the past
1 – 39
Normal 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.
Not diagnosed
–
Diagnosis not performed.
No control unit for receiving signals. (No applicable optional parts)
Revision: November 2015
2016 JUKE
LAN-16
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
How to Use CAN Communication Signal Chart
INFOID:0000000012200498
The CAN communication signal chart lists the signals needed for trouble diagnosis. It is useful for detecting
the root cause by finding a signal related to the symptom, and by checking transmission and reception unit.
JSMIA0446GB
Revision: November 2015
2016 JUKE
LAN
DIAGNOSIS AND REPAIR WORKFLOW
LAN-17
< BASIC INSPECTION >
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Trouble Diagnosis Flow Chart
INFOID:0000000012200499
DESCRIPTION
DETAIL OF TROUBLE DIAGNOSIS FLOW CHART
1.
INTERVIEW WITH CUSTOMER
Interview with the customer is important to detect the root cause of CAN communication system errors and to
understand vehicle condition and symptoms for proper trouble diagnosis.
Points in interview
• What: Parts name, system name
• When: Date, Frequency
• Where: Road condition, Place
• In what condition: Driving condition/environment
• Result: Symptom
Notes for checking error symptoms:
• Check normal units as well as error symptoms.
- Example: Circuit between ECM and the combination meter is judged normal if the customer indicates
tachometer functions normally.
JSMIA0528GB
Revision: November 2015
2016 JUKE
LAN-18
< BASIC INSPECTION >
[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
• When a CAN communication system error is present, multiple control units may malfunction or go into fail-
safe mode.
• Indication of the combination meter is important to detect the root cause because it is the most obvious to
the customer, and it performs CAN communication with many units.
>> GO TO 2.
2.
INSPECTION OF VEHICLE CONDITION
Check whether the symptom is reproduced or not.
NOTE:
Do not turn the ignition switch OFF or disconnect the 12V battery cable while reproducing the error. The error
may temporarily correct itself, making it difficult to determine the root cause.
>> GO TO 3.
3.
CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION CHART)
Determine CAN system type based on vehicle equipment.
NOTE:
• This chart is used if CONSULT does not automatically recognize CAN system type.
• There are two styles for CAN system type specification charts. Depending on the number of available sys-
tem types, either style A or style B may be used.
• CAN System Type Specification Chart (Style A)
NOTE:
SKIB8717E
Revision: November 2015
2016 JUKE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст