hi
i have a vaer odd problem with my ms1v3 it seems to be tracking for a ground through my relay board
both the ecu harness and relay board were bought pre built and i have checked them everything seems to be right
but when i connect both wires to the clt sensor the f idle valve activates boosting the rpm
also the ego sweeps up and down al the time which i think is because it is trying to ground through that as well
the only thing that doesnt cause a proble is ath ait but thats in a plastic boss so the body cant ground not by design just how it is on my car
im a bit lost because i cant see why this is happening as there is less than 4 ohms resistance from the relay board and the earth pad by the proto board of the ms to body ground
anyone got any ideas
thanks
ms tracking for a ground
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Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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AR 67202
just thought i would update things with my progress i re routed the grounds to the negative battery terminal this did not help i now realise the 4 ohms was coming from the body point i measured from not the earth
i then observed the ecu restart when the warmup cut out engine up to temp this made me think it was in that circuit so i put a diode to prevent ground backflow through the f idle valve in line problem solved
it still needs tuning and the o2 still is a little eratic i may try a diode there to but for now it works
i then observed the ecu restart when the warmup cut out engine up to temp this made me think it was in that circuit so i put a diode to prevent ground backflow through the f idle valve in line problem solved
it still needs tuning and the o2 still is a little eratic i may try a diode there to but for now it works