Smart Key System (for Entry Function)

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

1. CHECK CERTIFICATION ECU





(a) Disconnect the F79 ECU connector.

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





(c) If the result is not as specified, there may be a malfunction on the wire harness side.

(d) Reconnect the F79 ECU connector.

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









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

2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





(a) Remove the main body ECU Removal.

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





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

(d) Install the main body ECU Installation.

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





(f) If the result is not as specified, the main body ECU or driver side junction block assembly may have a malfunction.

(g) Using an oscilloscope, check waveform 1.









(h) Using an oscilloscope, check waveform 2.









(i) Using an oscilloscope, check waveform 3.









(j) Using an oscilloscope, check waveform 4.









(k) Using an oscilloscope, check waveform 5.









(l) Using an oscilloscope, check waveform 6.









(m) Using an oscilloscope, check waveform 7.









(n) Using an oscilloscope, check waveform 8.









3. CHECK MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W)





(a) Disconnect the V2 multiplex network door ECU (back door P/W) connector.

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





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

(d) Reconnect the V2 multiplex network door ECU (back door P/W) connector.

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





(f) If the result is not as specified, the multiplex network door ECU (back door P/W) may have a malfunction.

(g) Using an oscilloscope, check waveform 1.









(h) Using an oscilloscope, check waveform 2.









(i) Using an oscilloscope, check waveform 3.









(j) Using an oscilloscope, check waveform 4.









(k) Using an oscilloscope, check waveform 5.









(l) Using an oscilloscope, check waveform 6.