Troubleshooting the cruise controls control unit

Checking the multiple plug of the cruise control's control unit

Note

When cruise control malfunctions occur, the first item to be checked is fuse no. 19 in the central electrical system. The brake light is protected by the same fuse.

1. Remove right seat.

2. With the ignition off, remove the multiple plug from the control unit.

3. Connect measuring instrument (voltmeter) to terminal 12 (ground) and terminal 1 (plus) of the multiple plug. Turn ignition on.

Display = battery voltage

4. Connect measuring instrument to terminal

Display = battery voltage

Press "AUS" key (OFF) on control switch.

Display = 0 volts

5. Connect measuring instrument to terminal

Press "EIN/BESCHLEUNIGEN" key Display = battery voltage

6. Connect measuring instrument to terminal

Display = 0 volts

Press "AUFNAHME" key (RECORD). Display = battery voltage

7. Connect measuring instrument to terminal

Display = 0 volts Operate brake Display = battery voltage

8. Connect measuring instrument to terminal 1

Display = battery voltage Operate clutch (switch interrupts) Display = 0 volts

9. Connect measuring instrument (oscilloscope) to terminals 12 and 11. Turn left rear wheel manually.

The measuring instrument displays square

Continue inspection of cruise control actuator if no faults can be detected.

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