Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnosis And Testing - Universal Transmitter
If the Universal Transmitter is inoperative, but the tire pressure monitoring system and compass are operating normally, refer to STANDARD PROCEDURE - SETTING TRANSMITTER CODES . Retrain the Transmitter with a known good transmitter and test the Transmitter operation again. If the Universal Transmitter, Tire Pressure monitoring and compass are inoperative, refer to DIAGNOSIS AND TESTING - OVERHEAD CONSOLE for diagnosis. For complete circuit diagrams, refer to SYSTEM WIRING DIAGRAMS . If the universal-transmitter is inoperative, test the transmitter with special tool Radio Frequency Detector (Figure ). Procedure is as follows:
- Turn the Radio Frequency Detector ON. A "chirp" will sound and the green power LED will light. If the green LED does not light, replace the battery.
- Hold the RF detector within one inch of the TRAINED universal transmitter and press any of the transmitters buttons.
- The red signal detection LEDs will light and the tool will beep if a radio signal is detected. Repeat this test three times.
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.