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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1067 (Theft Deterrent System) >> Diagnostic Information and Procedures >> Shock Sensor Inoperative >> Circuit/System Testing
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Circuit/System Testing

WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Without Accessory Inclination Sensor

  1. Ignition OFF, disconnect the harness connector at the shock sensor.
  2. Ignition ON, verify a test lamp illuminates between the B+ circuit terminal A and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Test for B+ between the signal circuit terminal B and ground.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the shock sensor. Disconnect the X7 harness connector at the BCM.
  5. Ignition ON, Test for B+ between the signal circuit terminal 15 and ground.
    • If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the shock sensor.
  6. If all circuits test normal, test or replace the shock sensor.

With Accessory Inclination Sensor

  1. Ignition OFF, disconnect the harness connector at the shock sensor and the harness connector at the inclination sensor.
  2. Ignition ON, verify a test lamp illuminates between the shock sensor B+ circuit terminal A and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Test for B+ between the signal circuit terminal B and ground.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  4. Ignition OFF, connect the harness connector at the shock sensor. Disconnect the X7 harness connector at the BCM.
  5. Ignition ON, Test for B+ between the BCM signal circuit terminal 15 and ground.
    • If not the specified value, test the signal circuit for a short to ground or and open/high resistance. If the circuit tests normal, test or replace the shock sensor.
  6. Ignition OFF, connect the harness connector at the inclination sensor.
  7. Ignition ON, Test for B+ between the BCM signal circuit terminal 15 and ground.
    • If not the specified value, test or replace the inclination sensor.
  8. If all circuits test normal, test or replace the shock sensor.
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