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:

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 voltage of the connector.




Standard:

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




e. Inspect using an oscilloscope.




2. CHECK TRANSPONDER KEY ECU ASSY

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:

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




e. Inspect using an oscilloscope.




3. CHECK ECM

a. Measure the resistance and voltage of the connectors.




Standard:

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







b. Inspect using an oscilloscope.