Engine Immobiliser System

TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER

a. Disconnect the I14 amplifier connector, and check the continuity 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 I14 amplifier connector, and check the continuity or voltage of each terminal of the connector.

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

Oscilloscope Waveform (Part 1):

Oscilloscope Waveform (Part 2):

c. Inspect using an oscilloscope.

2. CHECK TRANSPONDER KEY ECU ASSEMBLY (TMMK Made)

a. Disconnect the T11 ECU connector, and check the voltage or continuity 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 T11 ECU connector, and check the voltage between each terminal of the connector.

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

Oscilloscope Waveforms:

c. Inspect using an oscilloscope.

3. CHECK TRANSPONDER KEY ECU ASSEMBLY (TMC Made)

b. Reconnect the T11 ECU connector, and check the voltage between each terminal of the connector.

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

Oscilloscope Waveforms:

c. Inspect using an oscilloscope.

4. CHECK ECM (1MZ-FE, 3MZ-FE)

a. Disconnect the E7 and E8 ECM connectors, and check the voltage or continuity 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.

5. CHECK ECM (2AZ-FE)

a. Disconnect the E7 and E10 ECM connectors, and check the voltage or continuity 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.