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Circuit/System Testing

WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.
  1. Ignition OFF, disconnect the relays.
  2. Verify that a test lamp illuminates between the B+ circuit terminal 30 and ground at each relay connector.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and its fuse is open, test the control circuit terminal 87 for a short to ground.
  3. One at a time, connect a 30A fused jumper between terminal 30 and terminal 87 at each relay connection and verify fan activation.
    • If the fan does not activate, test the control circuit terminal for an open/high resistance. If the circuit tests normal, test the fan ground circuit terminal 1 for an open/high resistance. If the circuits test normal, replace the fan.
  4. If the circuits and fans test normal, replace the relay.
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