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Circuit/System Testing

WARNING: This page is about a different car, the 2008 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the steering angle sensor.
  2. Test for less than 5 ohms between the low reference circuit terminal 6 and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the EBCM.
  3. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If less than the specified value, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
  4. Ignition OFF, disconnect the harness connector at the EBCM.
  5. Ignition ON, test for 0 volts between the CAN bus low circuit terminal 4 and ground at the steering angle sensor connector.
    • If greater than the specified value, test the CAN bus low circuit for a short to voltage.
  6. Test for 0 volts between the CAN bus high circuit terminal 3 and ground.
    • If greater than the specified value, test the CAN bus high circuit for a short to voltage.
  7. Test for infinite resistance between the CAN bus low circuit terminal 4 and the CAN bus high circuit terminal 3.
    • If not the specified value, test the CAN bus circuits for a short to together.
  8. If all circuits test normal, replace the steering angle sensor.
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