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Home >> Audi >> 2017 >> A6 Quattro Competition >> Repair and Diagnosis >> External Pages >> Different car >> Section 290 (Wipers And Washers System) >> Diagnosis And Testing >> Wipers and Washers >> Pinpoint Tests >> Pinpoint Test O : The Headlamp Washers Are Always On >> Pinpoint Test O : The Headlamp Washers Are Always On

Pinpoint Test O : The Headlamp Washers Are Always On

WARNING: This page is about a different car, the 2016 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.

  1. O1 CHECK THE HEADLAMP WASHER PUMP VOLTAGE SUPPLY CIRCUIT FOR A SHORT TO VOLTAGE

    • Ignition OFF.
    • Disconnect: Headlamp Washer Relay.
    • Ignition ON.

    Do the headlamp washers continue to operate? 

    Yes  REPAIR the circuit.
    No  GO to  O2.

  2. O2 CHECK THE HEADLAMP WASHER RELAY

    • Ignition OFF.
    • Substitute a known good relay In place of the headlamp washer relay.
    • Ignition ON.

    Do the headlamp washers continue to operate? 

    Yes  REMOVE the known good relay. GO to  O3.
    No  REMOVE the known good relay. INSTALL a new headlamp washer relay.

  3. O3 CHECK THE HEADLAMP WASHER RELAY CONTROL CIRCUIT FOR A SHORT TO GROUND

    • Ignition OFF.
    • Connect: Headlamp Washer Relay.
    • Disconnect: Windshield Wiper Motor C1656 .

    Do the headlamp washers continue to operate? 

    Yes  REPAIR the circuit.
    No  INSTALL a new windshield wiper motor. REFER to Wiper Motor - Windshield .
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