Back Door Closer System

DOOR / HATCH: BACK DOOR CLOSER SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK POWER BACK DOOR ECU (POWER BACK DOOR MOTOR UNIT) (w/ POWER BACK DOOR SYSTEM)





(a) Disconnect the L20 power back door ECU 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 in the wire harness.
(c) Reconnect the L20 power back door ECU connector.
(d) Initialize the power back door system Back Door Closer System.
(e) 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.
2. BACK DOOR CLOSER ECU (MULTIPLEX NETWORK DOOR ECU) (w/o POWER BACK DOOR SYSTEM)





(a) Disconnect the L21 back door closer ECU 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 in the wire harness.
(c) Reconnect the L21 back door closer ECU 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.
3. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)





(a) Disconnect the D49 and 2F connectors.
(b) Measure the 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 D49 and 2F 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.