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Home >> Saturn >> 2007 >> Relay 3.9 W >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Wipers System And Washer System) >> Diagnostic Information and Procedures >> Windshield Wiper Washer System Malfunction >> Circuit/System Testing >> Multifunction Switch Circuit/System Testing
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Multifunction Switch Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Outlook. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the C3 harness connector at the turn signal/multifunction switch.
  2. Ignition OFF, test for less than 15 ohms of resistance between the ground circuit terminal M and ground.
    • If greater than 15 ohms, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the body control module.
  3. Verify the scan tool Windshield Wiper Switch parameter is Off.
    • If not Off, test the signal circuit terminal N for a short to ground. If the circuit tests normal, replace the body control module.
  4. Verify the scan tool Wiper High Speed Switch parameter is Inactive.
    • If not Inactive, test the signal circuit terminal K for a short to ground. If the circuit tests normal, replace the body control module.
  5. Install a 3-amp fused jumper wire between the signal circuit terminal N and ground. Verify the scan tool Windshield Wiper Switch parameter is Switch Fault.
    • If not Switch Fault, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the body control module.
  6. Install a 3-amp fused jumper wire between the signal circuit terminal K and ground. Verify the scan tool Wiper High Speed Switch parameter is Active.
    • If not Active, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the body control module.
  7. If all circuits test normal, replace the turn signal/multifunction switch.
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