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Home >> Infiniti >> 2017 >> QX30 Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> LAN System (Can) >> Basic Inspection >> Diagnosis And Repair Workflow >> Trouble Diagnosis Flow Chart

Trouble Diagnosis Flow Chart

  1. CAN SYSTEM TYPE CONFIRMATION

    Confirm the CAN system type based on vehicle specification and equipment. Refer to CAN SYSTEM SPECIFICATION CHART .

    GO TO STEP 2  .

  2. CAN DIAGNOSIS

    G-20 With CONSULT

    Perform CAN diagnosis function on CONSULT.

    NOTE:

    If ECU is not equipped, an error will be displayed on CAN diagnosis function. However it is not malfunction on the vehicle. Refer to VEHICLE EQUIPMENT IDENTIFICATION INFORMATION .

    Is any error detected?

    YES 

    GO TO STEP 3  .

    NO 

    CAN communication circuit is normal.

  3. NETWORK GROUP TROUBLE DIAGNOSIS

    Perform the diagnosis for the error occurred network group.

    NOTE:

    If error occurred in plural network, check network group according to priority in the table.

    Priority Network Group Reference
    1 Diagnostic CAN communication DIAGNOSIS PROCEDURE 
    2 Body CAN communication 1 DIAGNOSIS PROCEDURE 
    3 Chassis CAN communication DIAGNOSIS PROCEDURE 
    4 Powertrain CAN communication DIAGNOSIS PROCEDURE 
    5 Front end CAN communication DIAGNOSIS PROCEDURE 
    6 Multifunction media CAN communication DIAGNOSIS PROCEDURE 
    7 Body CAN communication 2 DIAGNOSIS PROCEDURE 

    GO TO STEP 4  .

  4. REPAIR OR REPLACE THE MALFUNCTIONING PART

    1. Repair or replace the malfunctioning part.
    2. Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replacement.

    GO TO STEP 5  .

  5. FINAL CHECK

    G-20 With CONSULT

    1. Check all DTC. If DTC is detected, erase DTCs.
    2. Perform CAN diagnosis function on CONSULT.

    Is any error detected?

    YES 

    GO TO STEP   3  .

    NO 

    INSPECTION END