Operation CHARM: Car repair manuals for everyone.

Pinout Values and Diagnostic Parameters

TERMINALS OF ECU
1. CHECK TIRE PRESSURE WARNING ECU

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





(a) Disconnect the tire pressure warning antenna and receiver connector.
(b) Measure the voltage according to the value(s) in the table.





(c) Connect the tire pressure warning antenna and receiver connector.
(d) Measure the voltage and resistance according to the value(s) in the table. If the result is not as specified, the ECU may have a malfunction.
(e) Using an oscilloscope, check the waveform 1.

Waveform 1:




Waveform 2: