Dynamic Radar Cruise Control System

CRUISE CONTROL: DYNAMIC RADAR CRUISE CONTROL SYSTEM: TERMINALS OF ECU


1. CHECK ECM





HINT:
As the ECM connector is a waterproof connector, it is not possible to check the voltage of each terminal or check the waveform with an oscilloscope while the ECM is installed in the vehicle.

(a) Disconnect the A38 and C53 ECM 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.
2. CHECK DISTANCE CONTROL ECU





(a) Disconnect the E86 distance control 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) Using an oscilloscope, check waveform 1.










(d) Using an oscilloscope, check waveform 2.






3. CHECK MILLIMETER WAVE RADAR SENSOR





(a) Disconnect the A44 millimeter wave radar sensor connector.
(b) Measure the 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) Using an oscilloscope, check waveform 3.










(d) Using an oscilloscope, check waveform 4.