MOTORCRAFT DURA-Spark II Ignition Systems: Testing: Notes
NOTE:
All wire colors shown refer to colors of ignition control module wires. When making tests, wires must be traced back to control module for proper color identification. Also, when a test is completed and a problem is disclosed, make the repair necessary and repeat failed test to be sure problem has been corrected. All tests are based on the fact that engine cranks but will not start.
CAUTION:
When checking the secondary voltage, do not remove the following spark plug wires while the engine is running or cranking:
Plug No. 1 or 8 on V8 engines.
Plug No. 3 or 5 on 6 Cylinder engines.
Plug No. 7 or 3 on 4 Cylinder engines.
NOTE:
On vehicles with a catalytic converter, do not run engine for more than 30 seconds with a spark plug wire removed.