Starter Motor Disabling

The starter disable circuit is used to protect the starter. The starter cannot be engaged with an already running engine.

The starter disable is carried out after the actuation of the starter solenoid has been ended.

The following situations will enable the starter disable function of the CAS:

• No "brakes actuated" signal: if no "brakes actuated" signal is output within a maximum of 200 milliseconds after the start/stop button is pressed, the engine start-up is aborted again. If only one of the two redundantly output brake operation signals is received, then the engine can be started.
• No continuous "brakes actuated" signal: if during the starting procedure the brakes are not continuously actuated, the engine start-up is aborted again.
• Time-out expired: the maximum operating period of the starter is 21 seconds.
• Selector lever in invalid position: outside P or N.
• The engine speed is greater than 1000 RPM. The DME (ECM) signals "status engine running."
• Short circuit/overloading detection of the starter by the CAS.