Smart Key System (for Start Function)

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): TERMINALS OF ECU

1. CHECK POWER MANAGEMENT CONTROL ECU





(a) Disconnect the A22, L5 and L6 connectors.

(b) Measure the voltage and resistance according to the value(s) in the table below.





If the result is not as specified, there may be a malfunction in the wire harness.

(c) Reconnect the A22, L5 and L6 connectors.

(d) Measure the voltage and check for pulses according to the value(s) in the table below.





(e) Using an oscilloscope, check the signal waveform of the ECU.

(1) Waveform 1









(2) Waveform 2









HINT
The wavelength becomes shorter as the vehicle speed increases.

(3) Waveform 1 (Reference)





Text in Illustration





Measurement Condition





(4) Waveform 2 (Reference)





Text in Illustration





Measurement Condition