Pinout Values and Diagnostic Parameters

2UR-FSE STARTING: SMART ACCESS SYSTEM WITH PUSH-BUTTON START: TERMINALS OF ECU

1. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)





(a) Disconnect the A68, L13 and DA main body ECU 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 on the wire harness side.

(c) Reconnect the A68, L13 and DA main body ECU connectors.

(d) Measure the voltages according to the value(s) in the table below.





If the result is not as specified, the ECU may have a malfunction.

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

(1) Waveform 1





Reference





HINT
As the vehicle speed increases, the wavelength shortens.

(2) Waveform 2





Reference





(3) Waveform 3





Reference





2. CHECK CERTIFICATION ECU





(a) Disconnect the L15 certification ECU connector.

(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 on the wire harness side.

(c) Reconnect the L15 certification ECU connector.

(d) Measure the voltage according to the value(s) in the table below.





If the result is not as specified, the main body ECU may have malfunction.

3. CHECK HYBRID VEHICLE CONTROL ECU





(a) Disconnect the A74, A75, A76 and E55 hybrid vehicle control ECU 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 on the wire harness side.

(c) Reconnect the A74, A75, A76 and E55 hybrid vehicle control ECU connectors.

(d) Measure the voltage according to the value(s) in the table below.





If the result is not as specified, the hybrid vehicle control ECU may have a malfunction.

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

(1) Waveform 1





Reference





4. CHECK STEERING LOCK ECU





(a) Disconnect the L33 steering lock ECU connector.

(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 on the wire harness side.

(c) Reconnect the L33 steering lock ECU connector.

(d) Measure the voltage according to the value(s) in the table below.





If the result is not as specified, the ECU may have a malfunction.