Power Trunk Lid System

ENGINE HOOD / DOOR: POWER TRUNK LID SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

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





(a) Disconnect the DA, DF, L11, L12, L13 and A68 ECU 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 on the wire harness side.
(c) Reconnect the DA, DF, L11, L12, L13 and A68 ECU connectors.
(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.






(e) Using an oscilloscope, check waveform 1.










(f) Using an oscilloscope, check waveform 2.










(g) Using an oscilloscope, check waveform 3.










(h) Using an oscilloscope, check waveform 4.






2. CHECK LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU)





(a) Disconnect the LA, LG, and LD junction block connectors.
(b) Measure the resistance and voltage 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 LA, LD, and LG junction block connectors.
(d) Measure the voltage according to the value(s) in the table below.





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






(e) Using an oscilloscope, check waveform 1.










(f) Using an oscilloscope, check waveform 2.






3. CHECK LUGGAGE CLOSER MOTOR (POWER TRUNK LID CONTROL ECU)





(a) Disconnect the S43 motor connector.
(b) Measure the resistance and voltage 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 S43 motor connector.
(d) Measure the voltage according to the value(s) in the table below.





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






(e) Using an oscilloscope, check waveform 1.










(f) Using an oscilloscope, check waveform 2.










(g) Using an oscilloscope, check waveform 3.