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Home >> Hummer >> 2008 >> H3 Base, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 199 (Anti-Lock Brake System, Traction Control System & Stability Control System) >> Diagnostic Information and Procedures >> DTC C0900 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
  1. If the DTC is history, or if other modules also have high voltage DTCs stored, refer to Charging System Test .
  2. Start the engine, record the voltage at the battery terminals. Observe the scan tool Battery Voltage Signal parameter in the EBCM data list. Voltages should not differ by greater than 1 volt.
    • If the difference is greater than 1 volt, replace the EBCM.
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