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Home >> Chevrolet >> 2012 >> Cruze Eco, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 99 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Windshield Wiper System Malfunction >> Circuit/System Testing >> Windshield Wiper Motor Circuit Malfunction

Windshield Wiper Motor Circuit Malfunction

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect Wiper ON/OFF relay.
  2. Test for less than 20 ohms of resistance between the ground circuit terminal 85 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Test for less than 20 ohms of resistance between the ground circuit terminal 87A and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 87 and ground.
    • If the test lamp does not illuminate, test or replace the underhood fuse block.
  5. Install a test lamp between the control circuit terminal 86 and the ground circuit terminal 85.
  6. Using the multifunction switch, command the low speed wipers ON and OFF. The test lamp should turn ON and OFF as commanded.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  7. Ignition OFF, disconnect the WIPER HI/LO relay.
  8. Test for less than 2 ohms of resistance between the control circuit terminal 30 at the WIPER HI/LO relay and the control circuit terminal 30 at the WIPER ON/OFF relay.
    • If greater than the specified range, replace the underhood fuse block.
  9. Connect the WIPER ON/OFF relay.
  10. Test for less than 20 ohms of resistance between the control circuit terminal 30 and ground.
    • If greater than the specified range, test or replace the WIPER ON/OFF relay.
  11. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 85 and ground.
    • If the test lamp does not illuminate, test or replace the underhood fuse block.
  12. Install a test lamp between the control circuit terminal 30 and the ground circuit terminal 87.
  13. Using the multifunction switch, command the low speed wipers ON. The test lamp should turn illuminate.
    • If the test lamp does not illuminate, replace the WIPER HI/LO relay.
  14. Install a test lamp between the B+ circuit terminal and the control circuit terminal 86.
  15. Using the multifunction switch, command the high speed wipers ON and OFF. The test lamp should turn ON and OFF as commanded.
    • If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM.
  16. Ignition OFF, connect the WIPER HI/LO. Disconnect the harness connector at the windshield wiper motor.
  17. Test for less than 20 ohms of resistance between the ground circuit terminal 4 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  18. Connect a test lamp between the control circuit terminal 2 and ground.
  19. Using the multifunction switch, command the low speed wipers ON and OFF. The test lamp should turn ON and OFF as commanded.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the WIPER HI/LO relay.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the WIPER HI/LO relay.
  20. Connect a test lamp between the control circuit terminal 1 and ground.
  21. Using the multifunction switch, command the high speed wipers ON and OFF. The test lamp should turn ON and OFF as commanded.
    • If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the WIPER HI/LO relay.
    • If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the WIPER HI/LO relay.
  22. Verify a test lamp illuminates between the signal circuit terminal 3 and ground.
    • If the test lamp does not illuminate, replace the BCM.
  23. If all circuits test normal, test or replace the windshield wiper motor.
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