Bartec USA TPMS PRO Series User Guide Rev5.1 Table of Contents
Page 20
3.0 Test Before You Touch (TBYT)
The phrase “Test Before You Touch” (or TBYT) is exactly that: understanding the overall condition of the vehicle’s TPMS prior to
service. The first recommended step with TPMS service is to conduct the TBYT process first.
Bartec has integrated this process into the PRO Series tools. When performing a TBYT on a vehicle, the user is examining the
following conditions:
• Status of the vehicle’s TPMS light
• Physical/mechanical inspection of the sensors
• Activation of the sensors
• Existing TPMS Diagnostic Trouble Codes (Tech300PROC and Tech400PRO only)
NOTE:
Not all vehicles are supported for DTC scanning via OBDII connection; follow the on-tool prompts for further details.
The tool’s Test Before You Touch function will prompt the user step-by-step through getting a status of the vehicle by verifying
the sensors are working and (when supported) view any TPMS-related Diagnostic Trouble Codes (DTCs).
3.1 TPMS Light Status
Understanding the status of the vehicle’s TPMS malfunction indicator light (MIL) is
essential in TPMS diagnostics.
NOTE:
It is best to check the TPMS MIL status when first keying on the vehicle. Some
vehicles’ systems may initially display a flashing light at key-on, but change to a
solid light after a set interval.
Solid MIL: Indicates low air pressure detected in one or more tires. Check and verify that the air pressure of all tires is set to
placard.
Flashing MIL: Indicates a TPMS system issue. Some example issues:
• Bad or missing sensor
• Sensor not learned to vehicle
• Sensor in wrong mode
• Receiver or control module issue
• Other system issue
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