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Home >> Chevrolet >> 2011 >> Caprice >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> Washer Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2010 Chevrolet Camaro. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.

Wiper/Washer Switch Malfunction

  1. Ignition OFF, disconnect the X3 harness connector at the K9 Body Control Module. Wait for one minute.
  2. Test for less than 5 Ω between the signal circuit terminal 10 X3 and the signal low reference terminal 25 X3 while activating the wash function.
    • If greater than the specified value, test the signal circuit for an open/high resistance. If the circuit tests normal, replace the S80 Window Wiper/Washer Switch.
  3. If all circuits test normal, test or replace the K9 Body Control Module.

Washer Relay Malfunction

  1. Ignition OFF, disconnect the harness connector X2 at the X50A Fuse Block - Underhood.
  2. Disconnect the harness connector X4 at the K9 Body Control Module.
  3. Test for less than 5 Ω between the control circuit terminal 21 X2 at the X50A Fuse Block - Underhood and the signal circuit terminal 14 X4 at the K9 Body Control Module.
    • If the value is not within the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the K9 Body Control Module.
  4. Test for infinite resistance between the control circuit terminal 21 X2 at the X50A Fuse Block - Underhood and ground.
    • If the value is not within the specified range, test the control circuit for a short to ground.
  5. If all circuits test normal, test or replace the X50A Fuse Block - Underhood.

Washer Pump Malfunction

  1. Ignition OFF, disconnect the harness connector at the G24 Windshield Washer Pump.
  2. Ignition ON, verify a test lamp does not illuminate between the control circuit terminal 1 and the ground circuit terminal 2.
    • If the test lamp illuminates, test the control circuit for a short to voltage.
  3. Verify a test lamp illuminates between the control circuit terminal 1 and the ground circuit terminal 2 while activating the wash function.
    • If the test lamp does not illuminate, test the control circuit for an open/high resistance.
  4. Verify a test lamp illuminates between the control circuit terminal 1 and the ground circuit terminal 2 while activating the wash function.
    • If the test lamp does not illuminate, test the ground circuit for an open/high resistance.
  5. Test for less than 5 Ω between the ground circuit terminal 2 and ground.
    • If greater than the specified value, test the ground circuit for an short to voltage or an open/high resistance.
    • If all circuits test normal, replace the X50A Fuse Block - Underhood.
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