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Home >> Infiniti >> 2020 >> QX80 Luxe, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (5 Of 5) >> Engine (ECM) >> DTC P26AB: Multi-Way Control Valve >> DTC Diagnosis Procedure

DTC Diagnosis Procedure

  1. CHECK ENGINE COOLANT TEMPERATURE SENSOR 1 

    Check the engine coolant temperature sensor 1. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace engine coolant temperature sensor 1. Refer to CYLINDER HEAD : Exploded View .

  2. CHECK MULTI-WAY CONTROL VALVE 

    Check the multi-way control valve. Refer to Component Inspection .

    Is the inspection result normal?

    YES

    INSPECTION END

    NO

    Replace multi-way control valve. Refer to Refer to MULTI-WAY CONTROL VALVE : Removal & Installation .

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