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Circuit/System Testing

WARNING: This page is about a different car, the 2007 Saturn Sky. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, remove the WPR 70 On/Off relay.
  2. Test for less than 5.0 ohms of resistance between the ground circuit terminal 85 and ground.
    • If greater than 5.0 ohms, test the ground circuit for an open/high resistance.
  3. Ignition OFF, remove the WPR 52 high speed relay.
  4. Ignition ON, test for 0 volts between the wiper switch high signal circuit terminal 86 and ground.
    • If greater than 0 volts, test the signal circuit for a short to voltage. If the circuit tests normal, replace the wiper/washer switch.
  5. Ignition ON, connect a test lamp between the WPR 70 On/Off relay control circuit terminal 86 and ground.
  6. Momentarily activate the wipers to the MIST position. The test lamp should momentarily turn ON and OFF.
    • If the test lamp is always ON, test the relay control circuit for a short to voltage. If the circuit tests normal, replace the body control module.
    • If the test lamp does not illuminate, test the relay control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the body control module.
  7. Ignition OFF, disconnect the C2 harness connector at the body control module.
  8. Wiper switch OFF, test for infinite resistance between the signal circuit terminal 57 and ground.
    • If less than infinite resistance, test the signal circuit for a short to ground.
  9. If all circuits test normal, replace the WPR 70 On/Off relay.
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