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Circuit/System Testing

WARNING: This page is about a different car, the 2011 GMC Sierra, 2011 GMC Cab & Chassis Sierra, 2011 Chevrolet Silverado, and 2011 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the yaw and lateral accelerometer sensor.
  2. Ignition OFF, test for less than 10 Ω between the sensor ground circuit terminal and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify that a test lamp illuminates between the sensor ignition circuit terminal and ground.
    • If the test lamp does not illuminate, 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. Test for less than 1 Ω in each serial data circuit between the yaw and lateral accelerometer sensor and the EBCM.
    • If greater than the specified value, test the yaw and lateral accelerometer sensor serial data circuits for an open/high resistance.
  6. If all circuits test normal, replace the yaw and lateral accelerometer sensor.
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