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Home >> Chevrolet >> 2011 >> Volt >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper System And Washer System >> Diagnostic Information and Procedures >> Windshield Wiper System Malfunction >> Circuit/System Testing >> Windshield Wiper Motor Circuit Test

Windshield Wiper Motor Circuit Test

  1. Ignition OFF, Retained Accessory Power OFF, disconnect X1 harness connector at M75 Windshield Wiper Motor.
  2. 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 open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between B+circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test or replace the X50A underhood fuse block.
  4. Ignition ON, test for 4-12 V between the communication signal circuit terminal 4 and ground.
    • If not within the specified range, test the signal circuit for an open/high resistance or a short to voltage. If the circuit tests normal, replace the K9 Body Control Module.
  5. If all circuits test normal, replace the M75 Windshield Wiper Motor.
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