LIN Communication System

MULTIPLEX COMMUNICATION: LIN COMMUNICATION SYSTEM: TERMINALS OF ECU

TERMINALS OF ECU

1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
(a) Disconnect the E6, E7 and E8 main body 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 E6, E7 and E8 main body ECU connectors.
(d) Measure the voltage according to the value(s) in the table below.





If the result is not as specified, the main body ECU (Instrument panel junction block assembly) may have a malfunction.
2. CHECK SLIDING ROOF ECU (SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY)
(a) Disconnect the Q12 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 on the wire harness side.
(c) Reconnect the Q12 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 be malfunctioning.