Component Tests and General Diagnostics

Check ignition coil.
a. Check pressure relief plug at the top of the coil. If the plug is missing, or if compound is running out of the coil, replace the coil and the TCI control unit.
b. With ignition on, battery voltage should be present at coil terminal 15.
a. With low and high voltage wires disconnected from coil, check resistance between terminals.
Between 1 and 15 0.5 Ohms + 10%
Between 15 and 4 6K Ohms + 10%
If resistances are not within specification, replace ignition coil.
c. Check wire from coil terminal 1 to control unit terminal 4. There should be no resistance. Repair wiring as necessary.