Engine Immobilizer System
TERMINALS OF ECU1. CHECK TRANSPONDER KEY ECU ASSEMBLY
a. Disconnect the T27 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 T27 ECU connector.
d. Measure the voltage of the connector.
If the result is not as specified, the ECU may have a malfunction.
Oscilloscope Waveforms:
e. Inspect using an oscilloscope.
2. Check ECM
a. Measure the resistance and voltage of the connectors.
If the result is not as specified, the ECM may have a malfunction.
Oscilloscope Waveform (Part 1):
Oscilloscope Waveform (Part 2):
b. Inspect using an oscilloscope.