Engine Immobiliser System (for Hatchback)

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (for Hatchback): TERMINALS OF ECU

1. CHECK TRANSPONDER KEY AMPLIFIER





(a) Measure the resistance and voltage according to the value(s) in the table below.





(b) Check for pulses according to the value(s) in the table below.





(c) Inspect using an oscilloscope.

NOTICE:
The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

(1) Waveform 1 (Reference)





Measurement Condition





(2) Waveform 2 (Reference)





Measurement Condition





(3) Waveform 3 (Reference)





Measurement Condition





2. CHECK TRANSPONDER KEY ECU ASSEMBLY





(a) Disconnect the D139 transponder key ECU assembly connector.

(b) Measure the resistance and voltage according to the value(s) in the table below.





(c) Reconnect the D139 transponder key ECU connector.

(d) Measure the resistance and voltage, and check for pulses according to the value(s) in the table below.





(e) Inspect using an oscilloscope.

NOTICE:
The waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

(1) Waveform 1 (Reference)





Measurement Condition





(2) Waveform 2 (Reference)





Measurement Condition





(3) Waveform 3 (Reference)





Measurement Condition





(4) Waveform 4 (Reference)





Text in Illustration





Measurement Condition





(5) Waveform 5 (Reference)





Text in Illustration





Measurement Condition





3. CHECK ECM





(a) Measure the voltage and check for pulses according to the value(s) in the table below.





(b) Inspect using an oscilloscope.

(1) Waveform 1 (Reference)





Text in Illustration





Measurement Condition





(2) Waveform 2 (Reference)





Text in Illustration





Measurement Condition