Status inputs and outputs
This function is a test and is used to check the control unit's input and output signals.
When "Bogie axle lift, input signal" is active, the axle is not steerable. The same is true when "Switch active, component S20C" is inactive.
To control some functions, the engine must be running.
The control valve is active in the following modes:
The axle is lifted and the engine is running.
The control valve is inactive in the following modes:
At self-steering error mode.
The engine must be switched off.
Engine running and it has passed more than 20 seconds since the steering wheel has been turned.
The front steering angle sensor is ok if the signal voltage is within ± 0,5 V.
The rear steering angle sensor is ok if the signal voltage is within ± 1,2 V.
Ignition on, engine running for some functions.
No persons or equipment in the area around the steerable axle during the test.
Check that the statuses are correct.
If the function fails, check the test conditions and repair any faults.