Engine Immobilizer System

TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER

a. Disconnect the I14 amplifier connector.
b. Measure the resistance of the wire harness side connector.

Standard:

c. Reconnect the I14 amplifier connector.
d. Measure the resistance and voltage of the connector.

Standard:

e. Inspect using an oscilloscope.

Waveform 1 (Reference):

Waveform 2 (Reference):

2. CHECK TRANSPONDER KEY ECU ASSY

a. Disconnect the T5 ECU connector.
b. Measure the voltage and resistance of the wire harness side connector.

Standard:

c. Reconnect the T5 ECU connector.
d. Measure the voltage of the connector.

Standard:

e. Inspect using an oscilloscope.

Waveform 1 (Reference):

Waveform 2 (Reference):

Waveform 3 (Reference):

Waveform 4 (Reference):

3. CHECK ECM

a. Disconnect the E5 and E6 ECM connectors.
b. Measure the voltage and resistance of the wire harness side connectors.

Standard:

c. Inspect using an oscilloscope.

Waveform 1 (Reference):

Waveform 2 (Reference):