94 SENTRA FUEL PROBLEM

94 Sentra XE 1.6L with AT

at the COIL SIDE of fuel pump relay, with ignition switch on, there is positive voltage at terminal 1 of relay but at terminal 2 which is the "ground" side of the relay, there is no ground and the relay cannot close, hence no power to fuel pump.

traced the black/yellow "ground" wire back to the ECM, pulled code for MPFI which indicated EFI system was normal (5 long & 5 short blinks).

WHY WOULD ECM NOT ALLOW FUEL PUMP TO OPERATE WHEN (IT THINKS) SYSTEM IS NORMAL???

MUST I REPLACE ECM?

Reply to
nucleus
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With the engine off, turning the ign. key to the on position should energize the fuel pump relay for 5 seconds.

What are u measur> 94 Sentra XE 1.6L with AT

Reply to
AS

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