Engine Immobiliser System

ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER





(a) Disconnect the D24 transponder key amplifier connector.
(b) Measure the resistance of the wire harness side connector.

Standard resistance





If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the D24 transponder key amplifier connector.
(d) Measure the resistance and voltage of the connector.

Standard





If the result is not as specified, there may be a malfunction in the amplifier.
(e) Inspect using an oscilloscope.




(1) Waveform 1









(2) Waveform 2






2. CHECK TRANSPONDER KEY ECU ASSEMBLY





(a) Disconnect the D23 transponder key ECU connector.
(b) Measure the voltage and resistance of the wire harness side connector.

Standard





If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the D23 transponder key ECU connector.
(d) Measure the voltage of the connector.

Standard voltage





If the result is not as specified, there may be a malfunction in the ECU.
(e) Inspect using an oscilloscope.




(1) Waveform 1









(2) Waveform 2









(3) Waveform 3









(4) Waveform 4






(f) Measure the resistance between each pair of connector terminal.

Standard resistance





3. CHECK ECM





(a) Disconnect the A21 ECM connector.
(b) Measure the voltage and resistance of the wire harness side connector.

Standard





- *1: for Sedan
- *2: for Hatchback
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Reconnect the A21 ECU connector.
(d) Inspect using an oscilloscope.




(1) Waveform 1









(2) Waveform 2