Door Lock - Smart Key System

DOOR LOCK: SMART KEY SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK CERTIFICATION ECU





(a) Disconnect the S11 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.





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

(c) Reconnect the S11 ECU connector.
(d) Measure the voltage of the connector.









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

2. CHECK DRIVER SIDE JUNCTION BLOCK (MAIN BODY ECU)





(a) Disconnect the 1A, 1B and 1E junction block connectors.
(b) Measure the voltage and resistance of the wire harness side connector.





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

(c) Reconnect the 1A, 1B and 1E junction block connectors.
(d) Measure the voltage of the connectors.





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

3. CHECK TRANSPONDER KEY ECU





(a) Disconnect the T5 ECU connector.
(b) Measure the resistance and voltage of the wire harness side connector.





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

(c) Reconnect the T5 ECU connector.
(d) Measure the voltage of the connector.





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





(e) Inspect using an oscilloscope.










(f) Inspect using an oscilloscope.










(g) Inspect using an oscilloscope.










(h) Inspect using an oscilloscope.