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Home >> Buick >> 2014 >> Verano Convenience >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Wiper System And Washer System) >> Diagnostic Information and Procedures >> DTC B3873 >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.

Output Control Test

  1. Ignition ON, command the Windshield Washer Relay Command On and OFF with a scan tool.
  2. Observe the KR11 windshield washer pump relay activates and the G24 windshield washer pump runs.
    • If the KR11 windshield washer pump relay does not work, replace the X50A fuse block - underhood.
    • If the KR11 windshield washer pump relay works but the G24 windshield washer pump does not work, test the KR6 rear window washer pump relay and the G24 windshield washer pump.
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