Quote:
Originally Posted by Homeoboxter
I think if the CPS or the related wiring was bad then the engine wouldn`t run with the pump relay bypassed. He started the thread with stating he jumped the relay and the engine ran fine.
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You have a good point.
My idea of checking the CPS with a volt meter is that it is the easiest quickest way to confirm the condition of an electrical component and any wiring or connections involved as part of the diagnostic process.
No need to remove or replace the part if it tests good.
Totally eliminates becoming a parts changer and tail chasing. (where electrical parts are concerned).
Never could understand swapping electrical parts side to side (like coil packs or o2 sensors) to see if the fault moves with the electrical component.
Or replacing an electrical component because it is thought to be at fault.
When all you have to do is use a volt meter and back probe a connection or use the needles and pierce the wires.