Lan System: Other Nissan Rogue I

Condition of Error Detection

"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

1. CAN communication line open (CAN-H, CAN-L, or both)
2. CAN communication line short (ground, between CAN communication lines, other harnesses)
3. 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

1. 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.)
2. Fuse blown out (removed): CAN communication of the unit may cease.
3. 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).
4. 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).
5. 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 CONSULT- III under the above conditions. Erase the memory of the self-diagnosis of each unit.

ERROR EXAMPLE

Note. Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring. Refer to " ABBREVIATION LIST " for the unit abbreviation.

Example: TCM branch line open circuit

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SYMPTOM REFERENCE

Example: Data link connector branch line open circuit

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SYMPTOM REFERENCE

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.

SYMPTOM REFERENCE

Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit

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SYMPTOM REFERENCE

Example: CAN-H, CAN-L Harness Short Circuit

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DTC DETECTION CONDITION CHART

MONITOR ITEM (CONSULT-III)

Example: CAN DIAG SUPPORT MNTR indication

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Without PAST

ITEM DESCRIPTION CHART

With PAST

ITEM DESCRIPTION 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.

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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

1. What: Parts name, system name
2. When: Date, Frequency
3. Where: Road condition, Place
4. In what condition: Driving condition/environment
5. Result: Symptom

Note. 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. 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.

CREATE INTERVIEW SHEET

Fill out the symptom described by the customer, vehicle condition, and CAN system type on the interview sheet.

Interview Sheet (Example)

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DETECT THE ROOT CAUSE

CAN diagnosis function of CONSULT-III detects the root cause.

Caution

1. This section describes information peculiar to a vehicle and inspection procedures.
2. For trouble diagnosis procedure, refer to " «TROUBLE DIAGNOSIS PROCEDURE»(ref-295093-S21057818202008081400000) ".

FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted. Information necessary to service the system safely is included in the SRS AIRBAG and SEAT BELTS articles.

FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the SRS AIRBAG and SEAT BELTS articles.

CAN Communication Signal Chart

Refer to " HOW TO USE CAN COMMUNICATION SIGNAL CHART " for how to use CAN communication signal chart.

Note. Refer to " ABBREVIATION LIST " for the abbreviations of the connecting units.

CAN SYSTEM SPECIFICATION CHART

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Main Line

MAIN LINE REFERENCE

Branch Line

BRANCH LINE REFERENCE

Short Circuit

MALFUNCTION REFERENCE