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Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (4 Of 4) >> Engine (ECM) >> DTC U1003: Can Comm Circuit >> Confirmation Procedure

Confirmation Procedure

  1. CHECK DTC PRIORITY 

    If DTC U1003 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607.

    Is applicable DTC detected?

    YES>>

    Perform the diagnosis of the applicable. Refer to DTC Description .

    NO>>

    GO TO 2

    .

  2. PRECONDITIONING 

    TESTING CONDITION:

    Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.

    >>

    GO TO 3

    .

  3. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Turn ignition switch ON and wait at least 3 seconds.
    2. Check DTC.

    Is DTC detected?

    YES>>

    Refer to DTC Diagnosis Procedure .

    NO-1>>

    To check malfunction symptom before repair: Refer to Inspection .

    NO-2>>

    Confirmation after repair: INSPECTION END