Engine Immobiliser System

ENGINE IMMOBILIZER: ENGINE IMMOBILIZER SYSTEM: TERMINALS OF ECU

1. CHECK POWER SWITCH





(a) Disconnect the K29 switch connector.

(b) Measure the resistance of the wire harness.





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

(c) Reconnect the K29 switch connector.

(d) Measure the resistance and voltage of the connector.





HINT
*: Remove the key's battery before performing this inspection.

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

(e) Using an oscilloscope, check the waveform 1.









HINT
*: Remove the key's battery before performing this inspection.

(f) Using an oscilloscope, check the waveform 2.









HINT
*: Remove the key's battery before performing this inspection.

2. CHECK CERTIFICATION ECU





(a) Disconnect the U28 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.





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

(c) Reconnect the U28 ECU connector.

(d) Measure the resistance and voltage of the connector.





HINT
*: Remove the key's battery before performing this inspection.

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

(e) Using an oscilloscope, check the waveform 1.









HINT
*: Remove the key's battery before performing this inspection.

(f) Using an oscilloscope, check the waveform 2.









HINT
*: Remove the key's battery before performing this inspection.

3. CHECK ID CODE BOX





(a) Disconnect the K58 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.





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

(c) Reconnect the K58 ECU connector.

(d) Measure the voltage of the connector.





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

(e) Using an oscilloscope, check the waveform 1.









(f) Using an oscilloscope, check the waveform 2.









4. CHECK POWER SOURCE CONTROL ECU





(a) Disconnect the K73 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.





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

5. CHECK STEERING ACTUATOR (STEERING LOCK ECU)





(a) Disconnect the K28 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.





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

6. CHECK HYBRID VEHICLE CONTROL ECU





(a) Measure the resistance and voltage of the connector.





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

(b) Using an oscilloscope, check the waveform 1.









(1) Waveform 2 (Reference)

(c) Using an oscilloscope, check the waveform 2.









7. CHECK MAIN BODY ECU RH





(a) Disconnect the DD and DM ECU connectors.

(b) Measure the resistance and voltage of the wire harness side connectors.





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

(c) Reconnect the DD and DM ECU connectors.

(d) Measure the voltage of the connector.





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