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BODY CONTROL UNIT DESCRIPTION AND OPERATION 86-3-33 In the event of a communications link failure occurring while the transfer box enable is on, the output will be switched Gear position switch l Ignition on. l Auxiliary. When the ignition is on, the feed to the gear position switch is on. When the ignition is off and auxiliary is off for more AUTOMATIC GEARBOX - ZF4HP22 - 24, DESCRIPTION AND OPERATION, Description. Fuel flap release To decide the correct conditions for providing a fuel flap enable output, the BCU checks the following input conditions: l Ignition state. l Perimetric alarm state. If the battery state is not normal, the electric fuel flap enable is switched off. Audible warnings INSTRUMENTS, DESCRIPTION AND OPERATION, Description. Seat belt warning l Option 1 – warning on for 6 seconds. l Option 2 – warning on for 6 seconds or until the seat belt is fastened. l Option 3 – warning on for 6 seconds unless the seat belt is fastened. l Option 4 – no warning. The BCU checks the status of the following inputs: l Ignition on. l Seat belt fastened. Depending on the logic conditions of the inputs, the BCU provides the following outputs: l Audible warning No.1 requested. l Seat belt not fastened warning on instrument pack (via datalink to the instrument pack). When programmed for option 1 operation, audible warning No. 1 is requested when the ignition switch is turned from When programmed for option 2 operation, audible warning No. 1 is requested when the ignition switch is turned from When programmed for option 3 operation, audible warning No. 1 is requested when the ignition switch is turned from In the event of a communications link failure occurring, the audible and visual warning requests are not sent to the |