Engine Immobilizer System (w/ Smart Key System)

THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM (w/ Smart Key System): TERMINALS OF ECU

1. CHECK ENGINE SWITCH





(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.





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

HINT
*: Remove the key battery before performing this inspection.

(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)





Text in Illustration





Measurement Condition





HINT
*: Remove the key battery before performing this inspection.

(3) Waveform 3 (Reference)





Measurement Condition





2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)





(a) Disconnect the A43 certification ECU (smart key ECU assembly) connector.

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





(c) Reconnect the A43 certification ECU (smart key ECU assembly) connector.

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





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





If the result is not as specified, the certification ECU (smart key ECU assembly) may have a malfunction.

HINT
*: Remove the key battery before performing this inspection.

(f) 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)





Text in Illustration





Measurement Condition





HINT
*: Remove the key battery before performing this inspection.

(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 STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY)





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





If the result is not as specified, the steering lock ECU (steering lock actuator assembly) may have a malfunction.

HINT
*1: The steering locks when any door is opened with the shift lever in P and the engine switch off. The steering unlocks when the engine switch is turned on (ACC).

(b) 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)





Text in Illustration





Measurement Condition





4. CHECK ECM





HINT
The standard voltage between each pair of ECM terminals is shown in the table below. The appropriate conditions for checking each pair of terminals are also indicated. The result of checks should be compared with the standard voltage for that pair of terminals, displayed in the "Specified Condition" column. The illustration above can be used as a reference to identify the ECM terminal locations.

for 2GR-FE





for 2AR-FE





(a) 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)





Text in Illustration





Measurement Condition





* *1: for 2GR-FE

* *2: for 2AR-FE

(2) Waveform 2 (Reference)





Text in Illustration





Measurement Condition





* *1: for 2GR-FE

* *2: for 2AR-FE