automatic or stick shift car???????
prizm = toyota corolla, (vast parts to be had and books on same)
what are the symptoms, not guessing I need all facts on symptoms.
lets see. 1.6L engine or 1.8L , sorry they are not the SAME>
so what engine is there?
fuses test good?
car drives perfectly, all other electrics run ok , all lighting ok.
bad cluster , well what is bad, tacho, speedo, odometer, gauges, warning lamps. what?
say all things in the cluster that work and not work.
then and only then can any one give good advice.
ill run with only speedo needle bounces,
most 90s cars love to do that, its a fact. (high miles)
if need speedo and dead odometer that is unique.
that is correct more modern cars, all deleted that speedo cable
long long ago and is now a 10cent wire from cluster to ECU.
as did yours.
since the ECU knows speed already why not let it do the job for free. and did.
end history class but, the odd duck cars exist.
first thing to do is learn that the cars ECU has flash codes
you jumper 2 pins on a DLC, and the ECU flashes the CEL lamp with codes, if the code for VSS is set BINGO transmission VSS is dead, or erratic. code 42 tells you VSS is bad. does it flash 42?
The ECU uses speed, to calculate load and fuel better , knowing this facts.
but in your case its 1/2 true, the odd duck, the toyota way in 1994
is to have the VSS sensor drive the cluster
and the cluster speed drives the ECU.
(have book in hand from mitchells online, so can you of you look)
V3 is bad, (or as in all electrics, (laws) wires./loose/bad, there.
VSS means veh. speed sensor
my guess is you will ask where is it, like all here do not wanting
to pop 15bucks to read at mitchels.
At 55 mph:= 48 Hz ( the signal speed on it) square wave.
where it is depends on auto or stickshift
but its FWD and this sensor in on the side with axle ring gear
the 3 wire sensor with R-Y, R-G and R-L color wires is a BINGO.