Grand Wagoneer V8-360 5.9L VIN 7 2-bbl (1989)
Ignition Control Module: Testing and Inspection
1.
Remove the connector from the ignition coil.
2.
Depress the plastic barb and withdraw the positive wire terminal from the connector. the barb is visible from the coil side of the connector.
3.
Repeat the procedure for the negative wire terminal.
CAUTION: Ensure the ammeter current rating is sufficient for the test.
4.
Connect ammeter between the positive terminal and the disconnected positive wire.
5.
Connect a jumper wire from the coil negative terminal to a known good ground.
6.
Turn the ignition switch to the ON position.
7.
The current flow should be approximately 7 amps and should not exceed 7.6 amps. If current flow is more than 7.6 amps, replace the ignition coil.
8.
Leave the ammeter connected to the coil positive terminal. Remove the jumper wire from the negative terminal. Connect the coil green wire to the
negative terminal. Current flow should be approximately 4 amps. If current flow is less than 3.5 amps, inspect for poor connections in 4-wire
(control unit) and 3-way (distributor) connectors or poor ground at the ground screw inside the distributor. If the current flow is greater than 5
amps, the Electronic Ignition Control Unit (EICU) is defective.
WARNING: Use extreme caution when the engine is operating. Do not stand in direct line with the fan. Do not put hands near the
pulleys, belts, or fan. Do not wear loose clothing.
9.
Run the engine. Normal current flow with the engine operating is 2.0-2.4 amps. If current flow is not within specifications, the control unit is
defective.
