Smart Access System With Push-Button Start (for Entry Function)

THEFT DETERRENT / KEYLESS ENTRY: SMART ACCESS SYSTEM WITH PUSH-BUTTON START (for Entry Function): TERMINALS OF ECU

1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)





(a) Disconnect the E29 ECU connector.

(b) Measure the resistance and voltage of the wire harness side connector.





If the result is not as specified, the wire harness side may have a malfunction.

(c) Reconnect the E29 ECU connector.

(d) Measure the voltage of the connector.









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

2. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)





(a) Disconnect the E1, E2, E3, 2A, 2B and 2D ECU connectors.

(b) Measure the resistance and voltage of the wire harness side connectors.





If the result is not as specified, the wire harness side may have a malfunction.

(c) Reconnect the E1, E2, E3, 2A, 2B and 2D ECU connectors.

(d) Measure the voltage of the connectors.





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

(e) Using an oscilloscope, check waveform 1.





Waveform 1 (Reference)





(f) Using an oscilloscope, check waveform 2.





Waveform 2 (Reference)





(g) Using an oscilloscope, check waveform 3.





Waveform 3 (Reference)





(h) Using an oscilloscope, check waveform 4.





Waveform 4 (Reference)





(i) Using an oscilloscope, check waveform 5.





Waveform 5 (Reference)





(j) Using an oscilloscope, check waveform 6.





Waveform 6 (Reference)





(k) Using an oscilloscope, check waveform 7.





Waveform 7 (Reference)





(l) Using an oscilloscope, check waveform 8.





Waveform 8 (Reference)





(m) Using an oscilloscope, check waveform 9.





Waveform 9 (Reference)





(n) Using an oscilloscope, check waveform 10.





Waveform 10 (Reference)





(o) Using an oscilloscope, check waveform 11.





Waveform 11 (Reference)





(p) Using an oscilloscope, check waveform 12.





Waveform 12 (Reference)





3. CHECK POWER BACK DOOR UNIT (w/ Power Back Door)





(a) Disconnect the L36 unit connector.

(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 on the wire harness side.

(c) Reconnect the L36 unit connector.

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





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