Part 2

THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): TERMINALS OF ECU - (Continued)

(k) Using an oscilloscope, check waveform 7.

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





Text in Illustration





Waveform 7 (Reference)





* *1: For details about the areas that are outside the entry function detection area, refer to Operation Check Operation Check.

* *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Operation Check.

(l) Using an oscilloscope, check waveform 8.

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





Text in Illustration





Waveform 8 (Reference)





* *1: For details about the areas that are outside the entry function detection area, refer to Operation Check Operation Check.

* *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Operation Check.

2. CHECK POWER MANAGEMENT CONTROL ECU





(a) Disconnect the A39, I3 and I4 connectors.

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





If the result is not as specified, there may be a malfunction in the wire harness.

(c) Reconnect the A39, I3 and I4 connectors.

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





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

(e) Using an oscilloscope, check the signal waveform of the ECU.

(1) Waveform 1









HINT
The wavelength becomes shorter as the vehicle speed increases.

3. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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

HINT
Measure the values on the wire harness side with the connector disconnected.





If the result is not as specified, there may be a malfunction in the wire harness.

(c) Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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













If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.

(e) Using an oscilloscope, check waveform 1.

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





Waveform 1 (Reference)





Waveform 1 (Reference)





Waveform 1 (Reference)





Waveform 1 (Reference)





Waveform 1 (Reference)





(f) Using an oscilloscope, check waveform 2.

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





Waveform 2 (Reference)





Waveform 2 (Reference)





Waveform 2 (Reference)





Waveform 2 (Reference)





Waveform 2 (Reference)





(g) Using an oscilloscope, check waveform 3.

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





Waveform 3 (Reference)





Waveform 3 (Reference)





Waveform 3 (Reference)





Waveform 3 (Reference)





Waveform 3 (Reference)





Waveform 3 (Reference)





(h) Using an oscilloscope, check waveform 4.

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





Waveform 4 (Reference)





Waveform 4 (Reference)





Waveform 4 (Reference)





Waveform 4 (Reference)





Waveform 4 (Reference)





Waveform 4 (Reference)