Ignition Module Start Mode Test EEC II Models Only
- With test adapter connected, crank engine and repeatedly touch diagnostic test wire to battery positive terminal and check for sparks at modified spark plug. See Figs. 6 and 7. If plug sparks, remove test equipment and start vehicle. If vehicle will not start, proceed to EEC II Ignition Module Final Test. See Fig. 8. If plug sparks, proceed to step 2).
- Remove test adapter and reconnect ignition module. Measure battery voltage while cranking engine and then measure voltage at ignition module white wire. If voltages are equal, proceed to step 3). If voltages are not equal, repair ignition module white feed wire and attempt to start vehicle. If vehicle fails to start, proceed to step 3).
- Substitute a known good ignition module and repeat EEC II Ignition Module Run Mode Test. Repeat step 1). If plug sparks, reinstall old module to verify that it was faulty. Replace ignition module, if faulty. If plug does not spark with new module, repeat testing procedure beginning with EEC II Ignition Module Run Mode Test.