Engine Immobilizer System
TERMINALS OF ECUTerminals Of ECU:
1. CHECK TRANSPONDER KEY AMPLIFIER
Pinouts:
a. Disconnect the T13 amplifier connector, and measure the resistance between the terminal of the wire harness side connector and body ground.
If the result is not as specified, there may be a malfunction on the wire harness side.
Pinouts:
b. Reconnect the T13 amplifier connector, and measure the resistance and voltage of each terminal of the connector.
If the result is not as specified, the amplifier may have a malfunction.
Oscilloscope Waveforms:
c. Inspect using an oscilloscope.
Terminals Of ECU:
2. CHECK TRANSPONDER KEY ECU ASSY
Pinouts:
a. Disconnect the T20 ECU connector, and measure the voltage and resistance between each terminal of the wire harness side connector.
If the result is not as specified, there may be a malfunction on the wire harness side.
Pinouts:
b. Reconnect the T20 ECU connector, and measure the voltage between each terminal of the connector.
If the result is not as specified, the ECU may have a malfunction.
Oscilloscope Waveforms Part 1:
Oscilloscope Waveforms Part 2:
c. Inspect using an oscilloscope.
Terminals Of ECM:
3. CHECK ECM
Pinouts:
a. Disconnect the E7 and E8 ECM connectors, and measure the voltage and resistance between each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.
Oscilloscope Waveforms:
b. Inspect using an oscilloscope.