California

NOTE: The Hall effect sender should only be tested if the engine does not start and there is no spark at the spark plugs.
To further assist you during testing, see DIAGRAMS. Diagrams

CAUTION: Always turn ignition OFF when connecting or disconnecting Hall sender or ignition power stage unit terminals.
Be sure to check the integrity of the wires, connectors, battery terminals and fuses before replacing an expensive component.

1. Be sure ignition coil is in good working order. If needed, test coil first. See Powertrain Management/Ignition System/Ignition Coil/Testing and Inspection/Procedures. Testing and Inspection
Be sure ignition power stage unit is in good working order. If needed, test power stage unit after coil test. See IGNITION SYSTEM/POWER OUTPUT STAGE/TESTING AND INSPECTION.
2. Remove distributor cap and visually inspect the Hall sender. If trigger wheel is touching the sender, there is corrosion or other damage, replace and retest with new component.
3. Disconnect the coil wire from the center of distributor cap and connect it to ground so engine can't start.

Digifant I Coil Power Stage Connector:

4. Peel back the protective boot connector on the Hall sender harness connector.
5. Connect an LED testlight between the center connector terminal and either of the outer terminals.
6. Turn the engine over using the starter. The LED should flicker.
If not, replace and retest with new Hall effect sender.
7. Disconnect all test equipment, reconnect the coil wire and cover the Hall sender connector with its boot.