Test 3, Check Pip At EDIS Module
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.
DO NOT connect ECA to break- out box while performing EDIS diagnostics unless so directed. Turn key off. Connect EDIS Diagnostic Cable (007-00059) to breakout box (T83L-50-EEC-IV), EDIS module and coil pack. DO NOT connect VR sensor tee. See Fig 1. Use EDIS No. 6 overlay.
Connect EDIS diagnostic cable negative lead to battery, leaving positive lead disconnected. Set EDIS diagnostic cable box to 4/6 CYLINDER position. Set DVOM to 20-volt AC scale. Connect DVOM leads between breakout box pins No. J43 (PIP E) and J7 (BAT -). Crank engine. If settled AC voltage reading is greater than 0.4 volts, go to next test. If settled AC voltage reading is less than 0.4 volts, go to TEST 8.