5 Check For Power Feed to Coil Primary Control Circuits

Perform No Start Test 4, before proceeding.
1. Connect a diagnostic readout box to engine harness connector.
2. Turn ignition switch to Run position, then with diagnostic readout box put system to actuate ``Ignition Coil.''
3. Put diagnostic readout box to volts mode, touch diagnostic readout box volt probe to coil positive terminal.
4. If voltmeter does not read above 10 volts, repair dark green/black wire for an open circuit to harness, then proceed to Test 17.
5. If voltmeter reads above 10 volts, turn ignition switch Off and disconnect black/yellow wire from coil negative terminal.
6. Turn ignition On, put diagnostic readout box into actuate ``Ignition Coil'' and volts mode.
7. Touch diagnostic readout box volt probe to coil negative terminal.
8. If voltmeter does not read above 10 volts, replace ignition coil, then proceed to Test 17.
9. If voltmeter reads above 10 volts, touch diagnostic readout box volt probe to loose black/yellow wire near coil.
10. If voltmeter now reads above 10 volts, replace ignition coil, then proceed to Test 17.
11. If voltmeter still does not read above 10 volts, turn ignition switch Off and disconnect 14-way connector at SMEC, inspect connector for damage.
12. Put diagnostic readout box in ohm read mode. Make sure loose coil wire is not touching any ground.
13. Touch diagnostic readout box ohm probe to cavity 12 of 14-way connector.
14. If ohmmeter shows continuity, repair black/yellow wire to cavity 12 of 14-way connector for a short to ground.
15. If ohmmeter shows no continuity, connect one end of jumper wire to black/yellow wire near coil negative terminal, connect other end of jumper wire to ground, then touch ohm probe to cavity 12 of 14-way connector.
16. If ohmmeter shows continuity, replace SMEC.
17. If ohmmeter shows no continuity, repair open circuit in black/yellow wire between coil and 14-way connector, proceed to Test 17.