Test NS-5B - Inspecting Fuel Pump
WARNING: This page is about a different car, the 1995 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
For circuit and connector terminal identification, see CONNECTOR IDENTIFICATION
in this article. For wiring diagram, see WIRING DIAGRAMS
section at the end of this article.
- Turn ignition off. Remove fuel pump relay. Turn ignition on. Using scan tool in voltmeter mode, check voltage on fuel pump relay connector, fused ignition switch output circuit (Light Blue/Red wire).
- If voltage is less than 10 volts, repair open in the Dark Blue wire, Light Green/Black wire or the Light Blue/Red wire. Perform TEST VER-1 . If voltage is more than 10 volts, check resistance across fuel pump relay terminals using an external ohmmeter. See Fig 1 . If resistance is more than 100 ohms, replace fuel pump relay. Perform TEST VER-1 . If resistance is less than 100 ohms, repair open Dark Blue/Yellow wire (Pink wire). Perform TEST VER-1 .