RADAR CALIBRATION

If the ACC/FCM-ECU is replaced or removed and installed, use the following procedure to perform the radar calibration.
1.

caution

Before connecting or disconnecting M.U.T.-III, always turn the ignition switch to the "LOCK" (OFF) position.
Prior to this service operation, check the ACC/FCM-ECU radar for dirt or foreign material. Check the wheel alignment, the tyre inflation pressure and load condition, which may cause the vehicle to be tilted. Then correct them if necessary.

Before setting M.U.T.-III, turn the ignition key to the "LOCK" (OFF) position.
2.Turn the ignition switch to the "ON" position.
3.Select "ACCS/FCM"
4.Select "Special function"
5.

caution

This procedure should be followed only when the ACC/FCM-ECU must be aligned again due to removal and installation. This procedure is not needed when ACCS/FCM-ECU is replaced.

Select "Reset alignment values". Then check that "FCM OFF" flashes at 1Hz on the information screen of the multi-information display.
6.Select "Start service radar alignment". Then check that "FCM OFF" flashes at 2 Hz instead of 1 Hz on the information screen of the multi-information display.
7.Start the engine.
8.Drive the vehicle at constant speed of 30 km/h or more for at least five minutes on a straight road. However, this calibration process should complete within 20 minutes.

note

Prepare a vehicle travelling in front, and weather should be good so as to check the road condition.
Drive the vehicle on a straight road (which radius exceeds 250 m).

9.Then check that "FCM OFF" goes out and then illuminates on the information screen of the multi-information display.

note

If "FCM OFF" flashes at 1 Hz instead of 2 Hz on the information screen of the multi-information display, check the adaptive cruise control (ACC) system (Refer to

). Then repeat the procedure from step 6.

10.Turn the ignition switch to the "LOCK"(OFF) position.
11.Remove M.U.T.-III.