Pinout Values and Diagnostic Parameters

TERMINALS OF ECU




1. CHECK TRANSPONDER KEY AMPLIFIER




a. Disconnect the T8 amplifier connector and measure the resistance between the terminal of the wire harness side connector and body ground.

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




b. Reconnect the T8 amplifier connector and measure the resistance and voltage of each terminal of the connector.

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

Oscilloscope Waveforms:

c. Inspect using an oscilloscope.




2. CHECK TRANSPONDER KEY ECU ASSEMBLY

Part 1:

Part 2:

a. Disconnect the T9 ECU connector and measure the resistance and voltage between each terminal of the wire harness side connector.

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




b. Reconnect the T9 ECU connector and measure the voltage of each terminal of the connector.

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

Oscilloscope Waveform (Part 1):

Oscilloscope Waveforms (Part 2):

c. Inspect using an oscilloscope.




3. CHECK HYBRID VEHICLE CONTROL ECU




a. Disconnect the H31 hybrid vehicle control ECU connector and measure the resistance between the terminal of the wire harness side connector and body ground.

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




b. Reconnect the H31 hybrid vehicle control ECU. Measure the voltage between each terminal of the connector according to the value(s) in the table.

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

Oscilloscope Waveform (Part 1):

Oscilloscope Waveform (Part 2):

c. Inspect using an oscilloscope.