LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1991 >> Value Van 7.4 N >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Engine Controls - Tests W/Codes - 3.8L) >> No-Start Tests >> Test NS-5B - Inspecting Fuel Pump

Test NS-5B - Inspecting Fuel Pump

WARNING: This page is about a different car, the 1995 Plymouth Voyager, 1995 Plymouth Grand Voyager, 1995 Dodge Grand Caravan, 1995 Dodge Caravan, and 1995 Chrysler Town & Country. 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  . For wiring diagrams, see WIRING DIAGRAMS  section at the end of this article.
  1. Turn ignition off. Disconnect fuel pump relay. Turn ignition on. Using scan tool, check voltage on fuel pump relay connector terminal ignition output circuit (Dark Blue/White wire). If voltage is less than 10 volts, repair open Dark Blue/White wire. Perform TEST VER-1.
  2. If voltage is more than 10 volts, using an external ohmmeter, check resistance across fuel pump relay terminals. See Figure . 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. Perform TEST VER-1.