Engine Immobiliser System
TERMINALS OF ECUTerminals Of ECU/Pinouts:
1. CHECK TRANSPONDER KEY AMPLIFIER
a. Disconnect the T7 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.
b. Reconnect the T7 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.
c. Inspect using an oscilloscope.
Terminals Of ECU/Pinouts - Check Transponder ECU Assy:
2. CHECK TRANSPONDER KEY ECU ASSY
a. Disconnect the T14 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.
b. Reconnect the T14 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.
c. Inspect using an oscilloscope.
Terminals Of ECU/pinouts - Check ECM:
3. CHECK ECM
a. Disconnect the E6 and E7 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.
b. Inspect using an oscilloscope.