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Home >> Infiniti >> 2024 >> QX80 Premium Select, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2 Of 2) >> Component /Circuit Diagnosis >> Multi-Way Control Valve >> Component Inspection
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Component Inspection

  1. CHECK MULTI-WAY CONTROL VALVE-1 

    SYMBOL With CONSULT

    1. Turn ignition switch ON and engine stopped.
    2. On the CONSULT screen, select "ENGINE">>"WORK SUPPORT">>"ENGINE COOLANT BYPASS VALVE".
    3. Check that indication of "ENGINE COOLANT B/V POSI".

    Is "205 deg" or more displayed on CONSULT screen?

    YES>>

    GO TO 2.

    NO>>

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

  2. CHECK MULTI-WAY CONTROL VALVE-2 

    SYMBOL With CONSULT

    1. Start the engine.
    2. Warm engine up to the normal operating temperature.
    3. Check the following condition.
      COOLANT TEMP/S 10 - 100°C (50 - 212°F)
      ENG OIL TEMP 120°C (248°F) or less
      A/C switch OFF
    4. Turn ignition switch OFF and wait at least 10 seconds.
    5. Start the engine.
    6. Check "ENGINE COOLANT B/V POSI" approximately 2 seconds after engine start.

    Is "40°" or less displayed on CONSULT screen?

    YES>>

    INSPECTION END

    NO>>

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