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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 119 (Tire Pressure Monitoring System) >> Diagnostic Information and Procedures >> DTC C0750, C0755, C0760, or C0765 >> Circuit Description

Circuit Description

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The tire pressure monitor (TPM) system has 4 radio frequency (RF) transmitting pressure sensors inside each wheel/tire assembly. As vehicle speed increases to at least 32 km/h (20 mph) the sensor's internal roll switch closes which puts the sensors into drive mode. The sensors begin to transmit once every 60 seconds to the remote control door lock receiver (RCDLR). The data within the sensors RF transmission is translated by the RCDLR into sensor presence, sensor mode, and tire pressure. If a sensor did not go into drive mode, or is not transmitting at all, the RCDLR will set the appropriate DTC.

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