Fuel Pump Relay
WARNING: This page is about a different car, the 1994 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
If fuel pump relay is suspected of causing a fuel or ignition system malfunction, use Diagnostic Readout Box (DRB) to diagnose pump relay. See TESTS W/CODES - 5.2L
article in this section.
Fuel pump relay is controlled by PCM through the same ground circuit as ASD relay or through ASD relay. When PCM turns ASD relay ground circuit off, fuel pump relay ground circuit is also turned off. See AUTO SHUTDOWN (ASD) RELAY .