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normally-closed switch that supplies battery voltage on the TCC brake switch signal circuit to the PCM. When the PCM detects a closed brake switch circuit, 12 volts, high input, during decelerations, then DTC Conditions for Running the DTC z No VSS assembly DTCs P0502 or P0503. z The ignition is ON. z DTC P0724 has not passed. Conditions for Setting the DTC The PCM detects a closed brake switch circuit, 12 volts, without changing for 2 seconds and the following z The vehicle speed is greater than 32 km/h (20 mph) for 6 seconds; z then the vehicle speed is between 8-32 km/h (5-20 mph) for 4 seconds; z then the vehicle speed is less than 8 km/h (5 mph). Action Taken When the DTC Sets z The PCM does not illuminate the malfunction indicator lamp (MIL). z The PCM records the operating conditions when the Conditions for Setting the DTC are met. The PCM z The PCM stores DTC P0724 in PCM history. Conditions for Clearing the DTC z A scan tool can clear the DTC. z The PCM clears the DTC from PCM history if the vehicle completes 40 warm-up cycles without a non- z The PCM cancels the DTC default actions when the fault no longer exists and/or the ignition switch is Diagnostic Aids z Inspect the brake switch for proper mounting and operation. z Inspect for ABS DTCs. A faulty ABS condition may contribute to setting DTC P0724. Test Description
2004 Hummer H2 2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E Diagnosis (DTC P0218 To DTC P2771) - Hummer H2
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