Test NS-5A - Inspecting Fuel Pump

WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION DIRECTORY TABLE . For wiring diagram, see WIRING DIAGRAMS section. After each repair, perform TEST VER-1 .

Using DRB, stop actuation test. Actuate Auto Shutdown (ASD) relay. Touch fuel pump relay. If fuel pump relay does not pulsate when actuated, go to TEST NS-5B . If fuel pump relay pulsates when actuated, go to next step.
Turn ignition off. Disconnect fuel pump relay. Using DRB in voltmeter mode, check voltage on fuel pump relay connector terminal "B" (Red wire). If voltage is less than 10 volts, repair open Red wire. If voltage is more than 10 volts, go to next step.
Reconnect fuel pump relay. Disconnect fuel pump connector. Ensure fuel pump connector has clean and tight connections. Turn ignition on. Go to next step.
Using DRB, actuate fuel system. Using DRB in voltmeter mode, check voltage on fuel pump relay connector terminal No. 1 (Dark Green/Black wire). If voltage is less than 10 volts, go to step 6). If voltage is more than 10 volts, go to next step.
Stop actuation test. Using DRB in ohmmeter mode, check resistance of fuel pump connector terminal No. 5 (Black wire). If resistance is more than 5 ohms, repair open fuel pump ground wire. If resistance is less than 5 ohms, replace fuel pump.
If voltage is less than 10 volts in step 4), turn ignition off. Disconnect fuel pump relay. Connect a jumper wire between fuel pump relay connector terminal "D" (Dark Green/Black wire) and chassis ground. Go to next step.
Using DRB in ohmmeter mode, check resistance of fuel pump connector terminal No. 1 (Dark Green/Black wire). If resistance is less than 5 ohms, replace fuel pump relay. If resistance is more than 5 ohms, repair open Dark Green/Black wire.