LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> Cutaway 7.3 M >> Repair and Diagnosis >> External Pages >> Different car >> Section 3 (Engine Controls - Basic Testing) >> Electronic DISTRIBUTORLESS Ignition System (EDIS) 4.0L Engine >> Test 13, Check PWR GND To EDIS Module
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Test 13, Check PWR GND To 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.

Turn key off. Disconnect ECA. Install EDIS diagnostic cable, and connect it to breakout box, EDIS module and coil pack. Do not connect VR sensor tee. Connect diagnostic cable negative lead to battery negative terminal, leaving positive lead disconnected. Set diagnostic cable box switch to 4/6 CYLINDER position. Set DVOM to 2-k/ohm scale. Measure resistance between breakout box pins No. J27 (PWR GND) and J7 (BAT -).

If resistance is less than 5 ohms, go to next test. If resistance is greater than 5 ohms, repair open circuit. Remove all test equipment, and reconnect all components. Check for fault codes. If vehicle still does not start, go to next test.

scientia non olet · About LEMON Manuals