Step 9. Check wire No. 10 for continuity using the following procedures:
a. Disconnect wire No. 10 from switch S4, terminals 1 and 5.
b. Use multimeter to check continuity between ends of wire No. 10 while flexing along its entire length.
Reinstall wire No. 10 to switch S4, terminals 1 and 5, if continuity is indicated.
Replace wire No. 10 on switch S4 between terminals 1 and 5 with new wire if anything other than continuity is indicated.