LEMON Manuals: Even more car manuals for everyone
Home >> Infiniti >> 2018 >> QX30 Essential, FWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can System >> Basic Inspection >> 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 2.

  2. CAN DIAGNOSIS 

    SYMBOL 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 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 1

    Diagnosis Procedure

    4

    Powertrain CAN communication

    Diagnosis Procedure

    5

    Chassis CAN communication 2

    Diagnosis Procedure

    6

    Multifunction media CAN communication

    Diagnosis Procedure

    7

    Body CAN communication 2

    Diagnosis Procedure

    GO TO 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 5.

  5. FINAL CHECK 

    SYMBOL 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 3.

    NO

    INSPECTION END