Pinout Values and Diagnostic Parameters

TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: TERMINALS OF ECU; 2013 MY FR-S [03/2012 -]

1. CHECK DOOR CONTROL RECEIVER

HINT
Inspect the connectors from the back side while the connectors are connected.





(a) Measure the voltage and resistance according to the value(s) in the table below. If the result is not as specified, the ECU may have a malfunction.





(b) Using an oscilloscope, check waveform 1.









Waveform 1:





HINT
The waveform shown in the illustration is an example. If the tester displays a waveform that alternates between high and low, where high is a voltage that is between the IG power source voltage and a voltage 2.2 V lower than the IG power source voltage, and where low is a voltage of between 0 and 1.2 V, the ECU can be judged normal.