Step 3. Check wire No. 7 for continuity using the following procedures:
a. Remove thermal delay relay tube TD1 from its socket. Remove wire No. 7 from relay K2-A1.
b. Use a multimeter to check continuity between ends of wire while it is being flexed. Stick one multimeter probe into thermal delay relay tube
TD1 socket, hole 7, and other multimeter probe to end of wire No. 7.
Reinstall wire No. 7 back onto relay K2-A1 if continuity is indicated and reinstall thermal delay relay TD1 back into its socket.
Replace wire No. 7 between relay K2-A2 and thermal delay relay tube socket, hole 7, if anything other than continuity is measured.
Reinstall thermal delay relay tube TD1 into its socket.
2-13
TM 3-4230-209-30&P
