1. Test the coil and igniter in the distributor by removing the distributor cap and rotor. The Black/Yellow (BLK/YEL) wire should have battery voltage, key on engine off. Also, the coil negative wire should have battery voltage.
2. The Yellow/Green (YEL/GRN) wire should have 9 to 12 volts produced by the igniter.
3. When the YEL/GRN wire has the correct voltage, all the Engine Control Module (ECM) does is pulse the voltage to ground so spark will occur. This signal can be checked on a scope or a dwell meter. The signal should be a square wave signal on a scope or 10 to 14 degrees of dwell on a dwell meter on a 4-cylinder scale.
4. If the signal is correct, look for a trigger signal on coil negative. If there is a signal on coil negative, replace the ignition coil. If there is no signal on coil negative, replace the coil and igniter.
CALL ME IF THAT DOES NOT WORK...... my work number is 860-677-5454 ask for Mike B I just checked identifix and some causes could be
43 - Distributor
29 - Ignition Coil
8 - Igniter
2 - Igniter, Ignition Coil
1 - Crankshaft Position (CKP) Sensor
1 - Distributor Wiring Harness
1 - Ignition Switch