Dlc1 Timing Check

[artbuc]

Repair Manual says to connect Terminals TE1 and E1 of the DLC1 before checking engine timing. The SST is 09843-18020. Two questions:

1. I assume the SST is just a wire which shorts out TE1 and E1?

2. What does shorting out TE1 and E1 do?

You also have to connect TE1 and E1 prior to checking the Air Assist system on the IAC Valve.

Thanks for your help.