Pinout Values and Diagnostic Parameters

EXTERIOR PANELS / TRIM: AUTOMATIC RUNNING BOARD SYSTEM: TERMINALS OF ECU

1. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)





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





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

2. CHECK SIDE AUTO STEP CONTROLLER ECU ASSEMBLY





(a) Disconnect the A41 side auto step controller ECU assembly connector.

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





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

(c) Reconnect the A41 side auto step controller ECU assembly connector.

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





(e) Using an oscilloscope, check the waveform 1.





Waveform 1 (Reference)