RSM technical question

apexc said:

what type of signal that RSM receive for the vechicle speed.

volt - 0volt to 5volt
mA - 4-20mA
pulse

answers will be very appreaciate.

thank u

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Pulse. Square wave.

what are you trying to do actually?
if you are from electronics background, you might want to try pulse/frequency to voltage converter.

apexc said:

no i would like to install the RSM to my car.....citroen.....from what i know my speed sensor will give output in volt....

sensor is a three wire sensor.....

1. ground
2. 5 volt reference from ECU
3. signal to ECU ( as i say above....signal might be in volt )

MR. Zaki any expereince in installing one in the conti cars....?

Click to expand...

i have tried to search in the net. i found that most of citroen speed sensors give pulse signal.

http://xantiaclub.net/hydractive2/

Speed sensor

The sensor is Hall effect based and produces 8 impulses per rotation, or approximately 5 impulses per meter traveled (this depends somewhat on tire size). It is located on the gearbox where the speedometer cable attaches, or in some versions, on the cable itself.

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i have no experience installing one in the conti cars but as long as the signal is `readable', RSM will work

no 1 & 2 is power and ground. the 3rd wire is the signal. regardless of how many volts it gives, the signal will always be on-off-on-off-on-off. if that so, the 3rd wire is the one that should be wired to the RSM's speed wire.
On the pulse settings you can start with 8pulse, if you want to make the car `looks' faster use lower value :) sometimes you need to trial n error for the settings if you don't have data.

have you tried this?
which version of RSM do you have?
http://www.apexi-usa.com/pdf/productDocumentation/199.pdf
http://www.apexi-usa.com/pdf/technicalDocumentation/199.pdf

I think I have the printed doc. I'll email it to you tonight.

zaki said:

I think I have the printed doc. I'll email it to you tonight.

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not the printed one :)
i try to find, it must be somewhere inside my PC

Mr Zaki,

I got a rsm old edition of apexi model.

my speed sensor doesnt work...doesnt display anything

care to advise. RPM is allright

hi apexc....

well, i've tried on that as well....

and installed at N1. Care to assist?

1: where is the speed sensor wire? if according to apexi pdf, there's 2 version and on that 2 version there's 2 different place to tap in each pdf...i've tried both\

2: where is the speed sensor? could it be the speed sensor kong already?

lancer meter console on a gsr-wira

rorytate.. refer to the wiring diagram (GSR) i attach. Also check if your RSM grounding is correct. If not try borrow pivot speed meter and test if your speed signal is ok or not. The other suspect is that the wiring is not connected securely with your meter cluster. Loose connection may have an effect on your speed signal. The other suspect is the meter cluster itself. Very unlikely the speed sensor failed while your meter cluster still can show u speed readings. Gdluck.