Smart Key System (for Start Function)

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

1. CHECK POWER MANAGEMENT CONTROL ECU





(a) Disconnect the A22, L5 and L6 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 A22, L5 and L6 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









HINT
The wavelength becomes shorter as the vehicle speed increases.

(3) Waveform 3









(4) Waveform 4









2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)





(a) Disconnect the L62 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 L62 connector.

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





* *1: w/ Automatic Light Control System

(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









3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY





(a) Disconnect the A23 and A24 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 (IMMOBILISER CODE ECU)





(a) Disconnect the L10 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.