If pin is unlocked jumper 24 to 27 and S916 should display in erection aid.
If pin is locked, jumper 24 to 26, and S918 should display
**Note** If the jib retaining motor inductive sensor B911N (tells the crane the screw is backed off) is faulty, the Erection Screen will still show —-. Once the S916S has been acted on, it sends power to B911N, and once B911N detects metal, it powers K916A which tells the processor the pin is released.