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Circuit/System Testing

WARNING: This page is about a different car, the 2010 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the VES actuator.
  2. Ignition ON for 10 seconds, test for 5.0-7.0 volts between the low control circuit terminal 2 and ground.
    • If greater than the specified range, test the control circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
    • If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  3. Test for B+ between the high control circuit terminal 1 and ground.
    • If not the specified value, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  4. If all circuits test normal, test or replace the VES actuator.
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