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

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

1. CHECK POWER MANAGEMENT CONTROL ECU





(a) Disconnect the F51 and F52 connectors.

(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 F51 and F52 connectors.

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





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

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

(1) Waveform 1









(2) Waveform 2









(3) Waveform 3









HINT
The wavelength becomes shorter as the vehicle speed increases.

2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)





(a) Disconnect the F50 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.

3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY





(a) Disconnect the A35 and A36 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.

4. CHECK ID CODE BOX (IMMOBILIZER CODE ECU)





(a) Disconnect the F16 connector.

(b) Measure the resistance and voltage 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.