Interior Lighting System

LIGHTING (INT): LIGHTING SYSTEM: TERMINALS OF ECU

1. CHECK MAIN BODY ECU





(a) Disconnect the DC, DD, H3, and H4 main body ECU connectors.

(b) Measure the resistance according to the value(s) in the table below.





(c) *1: w/o Rear Power Seat Control System

*2: w/ Rear Power Seat Control System

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

(d) Reconnect the DC, DD, H3 and H4 main body ECU connectors.

(e) Measure the voltage according to the value(s) in the table below.





(f) If the result is not as specified, the main body ECU may have a malfunction.

(g) Waveform 1 (Reference) : Using an oscilloscope









HINT
The waveform varies depending on the CAN communication signal.

(h) Waveform 2 (Reference) : Using an oscilloscope









HINT
The waveform varies depending on the CAN communication signal.

2. CHECK BACK DOOR ECU





(a) Disconnect the V2 and V3 back door ECU 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 on the wire harness side.

(d) Reconnect the V2 and V3 back door ECU connectors.

(e) Measure the voltage and resistance according to the value(s) in the table below.





(f) If the result is not as specified, the back door ECU may be malfunctioning.