Eclipse L4-1997cc 2.0L DOHC (1991)
Ignition Coil Secondary Circuit Test
4. Using an ohm meter, check the resistance between secondary terminals for cylinders No. 1 and No. 4.
Resistance: ................................................................................................................................................................................... 10.3 - 13.9 Kohms
5. Using an ohm meter, check the resistance between secondary terminals for cylinders No. 2 and No. 3.
Resistance: ................................................................................................................................................................................... 10.3k - 13.9 Kohms
Replace the ignition coil if it fails any of these tests.
Primary Signal Of Control Relay Scope Pattern
OSCILLOSCOPE TEST
Primary Signal Of Ignition Coil.
1. Run engine at idle speed.
2. Connect the scope probe to pick-up point #1 (one side at a time) shown in the system schematic diagram and compare each signal to the pattern
shown.
If scope pattern is not as depicted in image, continue with the rest of the test procedures before replacing the assembly.
Power Transistor Control Signal Scope Pattern
Control Signal Of Power Transistor.
1. Run engine at idle speed.
2. Connect the scope probe to pick-up point #2 (one side at a time) shown in the system schematic diagram and compare each signal to the pattern
shown.
If scope pattern is not as depicted in image, continue with the rest of the test procedures before replacing the assembly.
HARNESS TEST
