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Component Testing

WARNING: This page is about a different car, the 2018 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.

Windshield Wiper Switch

  1. Ignition OFF, disconnect the harness connector at the S82 Windshield Wiper/Washer Switch.
  2. Test for infinite resistance between the signal terminal 2 and the low reference terminal 1 with the high speed switch in the open position.
    • If less than infinite resistance 

      Replace the S82 Windshield Wiper/Washer Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the signal circuit terminal 2 and the low reference circuit terminal 1 with the high speed switch in the closed position.
    • If 2 Ω or greater 

      Replace the S82 Windshield Wiper/Washer Switch.

    • Go to next step: If less than 2 Ω 
  4. Test for infinite resistance between the signal terminal 3 and the low reference terminal 1 with the low speed switch in the open position.
    • If less than infinite resistance 

      Replace the S82 Windshield Wiper/Washer Switch.

    • Go to next step: If infinite resistance 
  5. Test for the resistance values listed below between the signal circuit terminal 3 and the low reference circuit terminal 1 by cycling the switch between Delay 1 and Delay 5.
    • Delay 1 : 7.50-8.00 kΩ
    • Delay 2 : 1.29-1.34 kΩ
    • Delay 3 : 1.95-2.00 kΩ
    • Delay 4 : 2.78-2.82 kΩ
    • Delay 5 :3.84-3.90 kΩ
    • If not within the resistance values listed 

      Replace the S82 Windshield Wiper/Washer Switch.

    • Go to next step: If within the resistance values listed 
  6. All OK

Relay Test

  1. Ignition OFF, disconnect the appropriate relay.
  2. Test for 60 - 200 Ω between terminals 1 and 2.
    • If less than 60 or greater than 200 

      Replace the relay.

    • Go to next step: If between 60 - 200 Ω 
  3. Test for infinite resistance between the terminals listed below:
    • 3 and 2
    • 3 and 5
    • 3 and 2
    • 2 and 5
    • If less than infinite resistance 

      Replace the relay.

    • Go to next step: If infinite resistance 
  4. Test for less than 5 Ω between terminals 3 and 4.
    • If 5 Ω or greater 

      Replace the relay.

    • Go to next step: If less than 5 Ω 
  5. Install a 10 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay terminal 2 and ground.
  6. Test for less than 5 Ω between terminals 3 and 5.
    • If 5 Ω or greater 

      Replace the relay.

    • Go to next step: If less than 5 Ω 
  7. All OK