Universal Transmitter: Operation

The Universal Garage Door Opener/Tire Pressure Monitoring (TPM) module has a microprocessor controller that can monitor the transmissions from the sensor/transmitters anytime the Ignition is ON. It can store the last 32 transmissions. There are two important values included in these transmissions:

1. Why The Transmission Was Sent
2. Low Tire Pressure

The module compares the transmitted tire pressure to the pressure threshold. If the module determines that the tire pressure transmitted is below the low pressure thresholds, it will signal for the "Low Tire" pressure warning lamp to come on.

The TPM module performs diagnostic routines, stores Diagnostic Trouble Codes and provides the appropriate lamp status to the Body Control Module (BCM). When the module determines there is a fault, the low tire pressure indicator lamp circuit is grounded and the BCM turns on the "Low Tire Pressure" indicator lamp.

The UGDO/TPM module also stores its own identification number, module version and the date of manufacture.