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Home >> Buick >> 2012 >> Regal Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 219 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> Washer Malfunction >> Circuit/System Testing >> Windshield Washer Switch Circuit Test
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Windshield Washer Switch Circuit Test

WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the S82 windshield wiper/washer switch.
  2. With RAP OFF, MDI disconnected, wait one minute, test for less that 5 Ω between the low reference terminal 2 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9 BCM.
  3. Ignition ON, verify the scan tool Windshield Washer Switch parameter is INACTIVE.
    • If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the K9 BCM.
  4. Install a 3 A fused jumper wire between the signal circuit terminal 5 and ground. Verify the scan tool Windshield Washer Switch parameter is ACTIVE.
    • If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.
  5. If all circuits test normal, test or replace the S82 windshield wiper/washer switch.
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