Test 19, Isolate Dis Module From Pip D
WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 1991 Ford Ranger, 1991 Ford RV Cutaway, 1991 Ford Pickup, 1991 Ford F-Super Duty, and 1991 Ford Explorer. However, it is still accessible from the selected car via links, so may be relevant.
With key off, disconnect diagnostic cable connector from DIS module (Pins No. 1-6). See Figure. Connect LED test light between breakout box pins No. (+) J32 (PIP D) and (-) J55 (IGND S). Crank engine. If test light does not blink continuously, go to next test. If test light blinks continuously, go to TEST 26.