Nissan Juke Service and Repair Manual : Trouble diagnosis

System Diagram


Condition of Error Detection


Condition of Error Detection

DTC (e.g. U1000 and U1001) 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.

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 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.

CAUTION

:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG RESULTS of CONSULT-III under the above conditions. Erase the memory of the self-diagnosis of each unit.

Symptom When Error Occurs in CAN Communication System

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


Example: TCM Branch Line Open Circuit


Example: TCM Branch Line Open Circuit


NOTE:


NOTE

:
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.

Example: Data Link Connector Branch Line Open Circuit


Example: Data Link Connector Branch Line Open Circuit


NOTE:


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-III


Can diagnosis with consult-III

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-Diagnosis

If communication signals cannot be transmitted or received among units communicating via CAN communication line, CAN communication-related DTC is displayed on the CONSULT-III Self Diagnostic Result screen.

NOTE

:
The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applicable sections.

Can Diagnostic Support Monitor


Can Diagnostic Support Monitor

MONITOR ITEM (CONSULT-III)

Example: CAN DIAG SUPPORT MNTR indication

Without PAST


Without PAST


With PAST


With PAST

How to Use Can Communication Signal Chart


How to Use Can Communication Signal Chart

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.

Basic inspection


    System
    Can communication system CAN COMMUNICATION SYSTEM : System Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex commun ...

    Basic inspection
    Diagnosis and repair workflow Trouble Diagnosis Flow Chart Trouble Diagnosis Procedure INTERVIEW WITH CUSTOMER Interview with the customer is important to detect the root cause of CAN communic ...

    Other materials:

    Engine unit
    Disassembly 1. Remove intake manifold. Refer to EM-28, "Exploded View". 2. Remove catalyst convertor. Refer to EM-33, "2WD : Exploded View" (2WD models) or EM-34, "4WD : Exploded View" (4WD models). 3. Remove turbocharger. Refer to EM-36, "Exploded View" ...

    Driving on snow or ice
    WARNING Wet ice (328F, 08C and freezing rain), very cold snow or ice can be slick and very hard to drive on. The vehicle will have much less traction or grip under these conditions. Try to avoid driving on wet ice until the road is salted or sanded. Whatever the condition, drive with cau ...

    The seat belt reminder warning continues sounding, or does not sound
    Description Seat belt reminder warning does not sound. Seat belt reminder warning sounds continuously. Diagnosis Procedure 1.CHECK SEAT BELT WARNING LAMP 1. Turn ignition switch ON. 2. Check the operation of the seat belt warning lamp in the combination meter. Seat belt (driver side) fast ...