[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: Can anyone identify unslotted relay as FP relay ? was: infam

> >Anyway, 49 and 50 in the panel are the connectors you're after.  Just shunt 
> >them together.
> Hmmmmm. Shunting those two will turn on the yellow engine check light 
> for as long as they are connected. (engine at idle)

> I took it for a drive, let the engine warm up, had it over 3000 rpm, 
> had boost and activated WOT switch.

You shunt them together for four seconds, then, un-shunt them. This
begins the test sequence. Do this after the test drive you mention
above. Return to your starting point or other testing destination.
Leave the car running. Shunt the two positions together for 4 
seconds, then unshunt them. Watch the engine light blink. It
will blink in binary. For further information, I'll bet a lister has
a description of how to interpret the binary codes, but briefly,
when the light is on, that's a 1-digit; when it's off, that's a 0;
however, it's off a lot. There's a kind of "rythym" to how it
blinks, so there are pauses between digits, and the pauses,
while manifest in the form of the light not blinking, do not
constitute zeroes.

Anyway, the ECU continues to blink the same code over and
over, until you once again shunt 49 and 50 together for 4 seconds
and then unshunt them. It then displays the next code. When there
are no more codes, it blinks 0-0-0-0.

For the output tests, the ignition switch should be in the "on"
position, but the car should not be started and running. Begin
the test as before, shunting 49 and 50 together for 4 seconds,
and then un-shunting them. The codes the ECU blinks in the
output mode are just to let you know which phase of the test
you are in. The "information" you are looking for in the output
test is manifest in the form of examining the proper operation
of each device controlled by the ECU.

My, my fingers are sore, let me rush this message off to you
and we'll see if this helps.

otb (only the best),
-Douglas Hurst Quebbeman (dougq@iglou.com)            [Call me "Doug"]
74 100LS Auto, 77 100LS Auto, 84 Coupe GT, 86 5Kcstq
"The large print giveth, and the small print taketh away."  -Tom Waits