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Home >> Ford >> 1989 >> Probe GT >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Ignition System - TFI-IV >> Testing >> Wiring >> All Others
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

All Others

Disconnect in-line connector near TFI module. Install Spark Tester (D81P-6666-A) between ignition coil wire and engine ground. Crank engine. Turn ignition off. If spark was present, check PIP and ignition ground wires for continuity. Service wiring as necessary. If wires are okay, see appropriate EEC-IV article in COMPUTERIZED ENGINE CONTROL section listed below. If spark was not present, go to IGNITION COIL SUPPLY VOLTAGE test.