Pinout Values and Diagnostic Parameters

ENGINE IMMOBILISER SYSTEM:

TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER





(a) Disconnect the T9 amplifier connector.
(b) Measure the resistance of the wire harness side connector.

Standard resistance:





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

(c) Reconnect the T9 amplifier connector.
(d) Measure the resistance and voltage of the connector.

Standard:





- If the result is not as specified, there may be a malfunction on the amplifier.

(e) Inspect using an oscilloscope.





(1) Waveform 1









(2) Waveform 2





2. CHECK TRANSPONDER KEY ECU ASSEMBLY





(a) Disconnect the T10 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.

Standard:





If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the T10 ECU connector.
(d) Measure the voltage of the connector.

Standard voltage:





If the result is not as specified, there may be a malfunction on the ECU.
(e) Inspect using an oscilloscope.





(1) Waveform 1









(2) Waveform 2 (Reference)









(3) Waveform 3









(4) Waveform 4





3. CHECK ECM (2TR-FE)





(a) Disconnect the E7 and E8 ECM connectors.
(b) Measure the resistance and voltage of the wire harness side connector.

Standard:





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

(c) Inspect using an oscilloscope.





(1) Waveform 1









(2) Waveform 2





4. CHECK ECM (1GR-FE)





(a) Disconnect the E7 ECM connectors.
(b) Measure the resistance and voltage of the wire harness side connector.

Standard:





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

(c) Inspect using an oscilloscope.





(1) Waveform 1









(2) Waveform 2