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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Wheels & Tires System (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> DTC C1729: Vehicle Speed Signal >> Diagnosis Procedure

Diagnosis Procedure

  1. PERFORM ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS 

    SYMBOL With CONSULT

    Perform self-diagnosis for "ABS".

    Is any DTC detected?

    YES

    Check malfunctioning circuit.

    NO

    GO TO 2.

  2. CHECK LOW TIRE PRESSURE WARNING CONTROL UNIT INPUT/OUTPUT SIGNAL 

    Check the low tire pressure warning control unit input/output signal values. Refer to Reference Value .

    Is the inspection result normal?

    YES

    Check pin terminal and connection of each harness connector for malfunctioning conditions.

    NO

    Replace the low tire pressure warning control unit. Refer to Removal and Installation .

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