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Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the hood ajar switch.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal and ground.
    • If greater than the specified value, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify the scan tool Hood Closed Switch and Hood Open Switch parameters are Inactive.
    • If not the specified value, test the applicable signal circuit for a short to ground. If the circuit tests normal, replace the RIM.
  4. Install a 3A fused jumper wire between the hood open switch signal circuit terminal and ground. Verify the scan tool Hood Open Switch parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the BCM.
  5. Install a 3A fused jumper wire between the hood closed switch signal circuit terminal and ground. Verify the scan tool Hood Closed Switch parameter is Active.
    • If not the specified value, test the signal circuit for a short to voltage or and open/high resistance. If the circuit tests normal, replace the BCM.
  6. If all circuits test normal, test or replace the hood ajar switch.
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