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Circuit/System Verification

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ensure that the vehicle battery is fully charged and in proper working order. Refer to.
  2. With the ignition ON and the engine OFF, observe the EC Ignition Relay Feedback Signal parameter on the scan tool. The voltage should be more than 10 volts.
    • If the voltage is less than 10 volts, continue with Circuit/System Testing.
  3. Observe the EC Ignition Relay Feedback Signal parameter on the scan tool while turning OFF the ignition. The voltage should decrease to 0 volts.
    • If the voltage is more than 0 volts, continue with Circuit/System Testing.
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