Ignition Control Module: Description and Operation

Thick Film Ignition Module:

The TFI IV ignition module has six connector pins at the wiring harness that supplies the following signals:
- Run
- Crank (start)
- Tach (coil)
- PIP (crankshaft position to ECA)
- Spark output (SPOUT from ECA)
- Internal ground from the ECA to the distributor

Ignition System:

The TFI IV module supplies the spark to the distributor through the ignition coil and calculates the duration. It receives its control signal from the ECA (SPOUT).

NOTE: Some later models use a remote module (Closed Bowl Distributors/CBD).

It is located in the engine compartment (Refer to "COMPONENT LOCATIONS"). The operation is essentially the same with the exception of the CBD has a wiring harness between the ignition module and the distributor.