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Home >> Cadillac >> 2009 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 42 (Antilock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0252 >> Circuit/System Testing
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Circuit/System Testing

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  1. Ignition OFF, disconnect the yaw rate sensor/lateral accelerometer and the steering wheel position sensor connectors.
  2. Ignition ON, measure for 4.8-5.2 volts at SAS sensor 5-volt reference circuit or battery positive reference at the yaw rate sensor and ground.
    • If over 5.2 volts, test each 5-volt reference circuit for a short to voltage. If the circuits tests normal, replace the EBCM.
    • If the SAS sensor is under 4.8 volts, test each 5-volt reference circuit for short to ground. If the circuits tests normal, replace the EBCM.
    • If the SAS sensor over 5.2 volts, test each 5-volt reference circuit for a short to voltage. If the circuits tests normal, replace the EBCM.
    • If the yaw rate sensor is under battery positive voltage, test each 12-volt reference circuit for short to ground. If the circuits tests normal, replace the EBCM.
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