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Home >> Chevrolet >> 2017 >> Traverse LS Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> DTC B3873: Front Washer Relay Circuit >> Component Testing

Component Testing

  1. Ignition OFF, disconnect the WSW Relay.
  2. Test for 60 - 200 ohms between terminals 85 and 86.
    • If the resistance is not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the relay.
  4. Test for less than 2 ohms between terminals 30 and 87A.
    • If greater than the specified range, replace the relay.
  5. Install a 10A fused jumper wire between relay terminal 85 and 12 volts. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 ohms between terminals 30 and 87.
    • If greater than the specified range, replace the WSW relay.
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