Current Flow Check
- Remove positive and negative wire connectors from ignition coil. Connect ammeter between positive terminal of coil and disconnected positive Yellow wire. Connect jumper wire from negative terminal to ground.
- Turn ignition switch to "ON" position. Current flow should be approximately 7 amps. If current flow exceeds 7.6 amps, replace ignition coil.
- Leave ammeter connected and remove jumper wire from negative terminal. Connect coil Green wire to negative terminal. Current flow should be approximately 4 amps. If less than 3.5 amps, check for poor connection in 4-wire and 3-wire connectors, and distributor ground screw.
- If current flow is greater than 5 amps, replace the control unit. Install ignition secondary wire and start engine. Normal current flow with engine running is 2.0-2.4 amps. If not, replace control unit.