Re: L-Jet fuel pump and throttle switch (correction)

[ethan schartman <eschartman@domain.elided>]

> Date: Tue, 19 Mar 2002 16:08:09 -0800 (PST)
> From: ethan schartman <eschartman@domain.elided>
> Subject: Re: L-Jet fuel pump and throttle switch

some corrections and clarifications to my post last
night (sorry, i was too lazy to bring the schematic
with me then, but i have it now):

(from the milano shop manual, 2.5L V6 schematic on
page 00-79)

the ground for both relay coils in the main relay set
(pin 85) is connected to pin 28 on the ECU. i presume
the ECU has *some* ability to shut off the fuel pump,
but don't know anything about that mode.

the coil in the lower right of set supplies 12V to the
injectors, ECU, and relay coil that powers the fuel
pump (this 12V line feeds the AFM switch which comes
back to the relay set to power the other coil). it is
powered by the ignition relay (via the "on" position
of the key). so when the engine is shut down, the
injectors *and* pump are simultaneously depowered (i
said just injectors last night). BTW, the pump hangs
off of pin 88d (along with some other stuff). pin 88z
has an unfused 12V connection (direct to battery), and
pin 88y has a fused 12V connection (fuel pump fuse).

also, there are two unmarked errors on the 2.5L
diagram: on the main relay(S2), pins 88a, 88b, 88e,
88f are all connected. and on the cold start switch,
there should be a ground connection through the switch
body to the heater and switch (i.e. where the wire
turns around at the bottom of the thermo time switch
diagram (S8)).

regards,
ethan schartman
'87 milano gold
princeton, NJ
Yahoo! Sports - live college hoops coverage
http://sports.yahoo.com/

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