Alarm Module: Testing and Inspection

TERMINALS OF ECM

CHECK TRANSPONDER AMPLIFIER

Terminals Of ECU:

a. Disconnect the T5 amplifier connector, and measure the resistance between the terminal of the wire harness side connector and body ground.

Pinouts:

Standard:
If the result is not as specified, there may be a malfunction on the wire harness side.

b. Reconnect the T5 amplifier connector, and measure the resistance or voltage of each terminal of the connector.

Pinouts:

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

c. Inspect using an oscilloscope.

Oscilloscope Waveform Part 1:

Waveform 1 (Reference):

Oscilloscope Waveform Part 2:

Waveform 2 (Reference):

CHECK TRANSPONDER KEY ECU

Terminals of ECU:

a. Disconnect the T11 ECU connector, and measure the voltage or resistance between each terminal of the wire harness side connector.

Pinouts:

Standard:
If the result is not as specified, there may be a malfunction on the wire harness side.

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

Pinouts:

Standard:

Oscilloscope Waveform:

c. Inspect using an oscilloscope.

CHECK ECM

Terminals of ECU:

a. Disconnect the E4, E5, E7 and E8 ECM connectors, and measure the voltage or resistance between each terminal of the wire harness side connectors.

Pinouts:

Standard:
If the result is not as specified, there may be a malfunction on the wire harness side.

Oscilloscope Waveforms:

b. Inspect using an oscilloscope.