Code E20 - Fuel Fuse Blown: Notes
WARNING: This page is about a different car, the 1989 Cadillac Fleetwood and 1989 Cadillac DeVille. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Test numbers refer to test numbers on diagnostic chart.
- Check for open or short to ground on circuit No. 139.
- Check for short to ground on circuit No. 120.
- Check for ECM shorting circuit No. 120 to ground.
- Measuring resistance of fuel pump circuit inside fuel tank.
- Check for pinched wires inside fuel tank.
- Checking for short to ground in wire harness of fuel tank.
- Wire harness shorted to ground. Check for pinched or grounded wires at fuel pump prime test point, oil pressure switch, and fuel pump connectors.
- Circuit No. 139 is grounded at all times. Check for faulty components.