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    Engine Temperature Control Actuator - N493-, CHECKING: General Description

    Uploaded by

    byungchul kim
    This document provides a test procedure for checking the engine temperature control actuator (N493) on a 2016 Audi A6. The procedure involves performing preliminary checks, measuring voltage and resistance values at the actuator connector and engine control module connector, inspecting wiring, and verifying that replacing faulty components resolves any diagnostic trouble codes.

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    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Engine Temperature Control Actuator - N493-, CHECKING: General Description

    Uploaded by

    byungchul kim
    2K views3 pages
    This document provides a test procedure for checking the engine temperature control actuator (N493) on a 2016 Audi A6. The procedure involves performing preliminary checks, measuring voltage and resistance values at the actuator connector and engine control module connector, inspecting wiring, and verifying that replacing faulty components resolves any diagnostic trouble codes.

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    AAAUU

    Original Title

    AAAUU

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    This document provides a test procedure for checking the engine temperature control actuator (N493) on a 2016 Audi A6. The procedure involves performing preliminary checks, measuring voltage and resistance values at the actuator connector and engine control module connector, inspecting wiring, and verifying that replacing faulty components resolves any diagnostic trouble codes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    2K views3 pages

    Engine Temperature Control Actuator - N493-, CHECKING: General Description

    Uploaded by

    byungchul kim
    This document provides a test procedure for checking the engine temperature control actuator (N493) on a 2016 Audi A6. The procedure involves performing preliminary checks, measuring voltage and resistance values at the actuator connector and engine control module connector, inspecting wiring, and verifying that replacing faulty components resolves any diagnostic trouble codes.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    6/3/2020 Printer Friendly View

    YMMS: 2016 Audi A6 Premium Jun 3, 2020


    Engine: 2.0L Eng License:
    VIN: Odometer:

    Engine Temperature Control Actuator - N493-, CHECKING

    General Description

    The coolant flow is regulated by means of two mechanically coupled rotary slide valves. The angular
    position of the rotary slide valves is regulated according to various engine maps stored in the engine
    control unit. Various switching positions can be implemented by configuring the rotary slide valves
    accordingly. This allows rapid heating of the engine, which, in turn, results in lower friction and higher
    fuel economy.
    Special tools and workshop equipment required

    Multimeter.
    Wiring Diagram.
    Scan Tool.

    Test Requirements

    Fuses OK.
    Battery voltage OK.
    Switch OFF all electrical and electronic accessories.
    Vehicles with automatic transmission, ensure the selector lever position is in "P".
    Vehicles with manual transmission, ensure the shifter lever position is in "N" with the parking brake
    applied.
    Observe all safety precautions: SAFETY PRECAUTIONS .
    View clean working conditions: CLEAN WORKING CONDITIONS .

    Test Procedure

    Step Procedure Result / Action to Take

    -- YES:

    PERFORM: Preliminary Check to verify the GO TO: Step 2.


    customers concern. Refer to PRELIMINARY
    1 -- NO:
    CHECK .
    GATHER more information from
    -- Was Complaint verified?
    customer about the complaint.

    IGNITION: OFF.
    DISCONNECT: Engine Temperature Control
    -- YES:
    Actuator -N493- harness connector.
    IGNITION: ON. GO TO: Step 3.
    CHECK: Engine Temperature Control Actuator -
    2
    N493- harness connector terminals 1 to 3 for -- NO:
    voltage.
    IGNITION: OFF. GO TO: Step 4.
    SPECIFIED VALUE: About 5.0 V.

    -- Was Value obtained?

    3 -- YES:

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    REMOVE: Engine Control Module - J623-. Refer REPLACE: Engine Temperature
    to appropriate service information. Control Actuator -N493-. Refer to
    CHECK: Engine Temperature Control Actuator - appropriate service information.
    N493- harness connector terminal 2 to the Engine GO TO: Step 5.
    Control Module - J623- harness connector T105 /
    80 for resistance. -- NO:
    CHECK: Engine Temperature Control Actuator -
    PERFORM: Visual Inspection of
    N493- harness connector terminal 4 to the Engine
    wiring and component.
    Control Module - J623- harness connector T105 /
    CHECK: Wiring for open, high
    86 for resistance.
    resistance, short or harness
    CHECK: Engine Temperature Control Actuator -
    connector for damage, corrosion,
    N493- harness connector terminal 5 to the Engine
    loose or broken terminals.
    Control Module - J623- harness connector T105 /
    REPAIR: Faulty wiring or
    87 for resistance.
    connector.
    SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω).
    GO TO: Step 5.
    -- Were Values obtained?

    -- YES:

    REMOVE: Engine Control Module - J623-. Refer GO TO: Step 5.


    to appropriate service information.
    CHECK: Engine Temperature Control Actuator - -- NO:
    N493- harness connector terminal 1 to the Engine
    Control Module - J623- harness connector T105 / PERFORM: Visual Inspection of
    78 for resistance. wiring and component.
    4 CHECK: Wiring for open, high
    CHECK: Engine Temperature Control Actuator -
    N493- harness connector terminal 3 to the Engine resistance, short or harness
    Control Module - J623- harness connector T105 / connector for damage, corrosion,
    26 for resistance. loose or broken terminals.
    SPECIFIED VALUE: 0.5 Ω (± 0.3 Ω). REPAIR: Faulty wiring or
    connector.
    -- Were Values obtained? GO TO: Step 5.

    5 -- YES:
    Final Procedure
    Perform a road test to verify repair. CHECK: Engine Control Module -
    J623- harness connector for any
    -- Does the original DTC return? damaged, pushed-out pins.
    REPAIR: As necessary.
    If all electrical connections are OK:
    REPLACE: Engine Control Module
    -J623-. Refer to appropriate
    service information.
    Clear the DTC's. Refer to
    DIAGNOSTIC MODE 04 - ERASE
    DTC MEMORY .
    Repair is complete. Generate
    Readiness Code. Refer to
    READINESS CODE .
    Return vehicle to Customer.

    -- NO:

    Perform the diagnostic procedure


    for any DTC's.
    If no DTC's return, the repair is
    complete.
    Return vehicle to customer.

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