Engine Immobiliser System
TERMINALS OF ECUTerminals Of ECU:
1. CHECK TRANSPONDER KEY AMPLIFIER
a. Disconnect the 114 transponder key amplifier connector, and check the continuity of each terminal of the wire harness side connector.
Standard:
If the result is not as specified, there may be a malfunction on the wire harness side.
b. Reconnect the I14 transponder key amplifier connector, and check the voltage each terminal of the connector.
Standard:
If the result is not as specified, the transponder key amplifier may be defective.
c. Using an oscilloscope, inspect.
NOTE: The waveform provided on this text does not include noise and chattering.
HINT: If the result is not as specified, the transponder key amplifier may malfunction.
d. Set the oscilloscope at 5 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 1 between the terminal 114-4 and 114-7 of the transponder key amplifier.
Standard:
e. Set the oscilloscope at 5 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 2 between the terminal I14-3 and I14-7 of the transponder key amplifier.
Standard:
f. Set the oscilloscope at 2 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 3 between the terminal I14-5 and I14-7 of the transponder key amplifier.
Standard:
Check ECM:
2. CHECK ECM
a. Check the voltage and continuity of each terminal of the wire harness side connectors.
NOTE:
- The check should be started from the backside of the ECM with the ECM connector being connected.
- Inspect the power source voltage (ignition switch ON: 10 - 14 V) and the body ground (ignition switch OFF: below 5 Ohm (each ground terminal engine ground, body ground)) before the check.
Standard:
If the result is not as specified, the ECM may malfunction.
b. Using an oscilloscope, inspect.
NOTE: The waveform provided on this text does not include noise and chattering.
HINT: If the result is not as specified, the ECM may malfunction.
c. Set the oscilloscope at 5 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 1 between the terminal E7-15 and E8-1 of the ECM.
Standard:
d. Set the oscilloscope at 5 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 2 between the terminal E7-27 and E8-1 of the ECM.
Standard:
e. Set the oscilloscope at 2 V/DIV and 10 ms/DIV, and insert the key in the ignition key cylinder. Check the waveform 3 between the terminal E7-26 and E8-1 of the ECM.
Standard: