Hi I have a Hitachi 130-3 no start. I have a fault on dash for camshaft and crankshaft sensor s The timing is ok has anyone a wiring diagram where these go into ECU I checked the wiring as much as possible can't find any brake s or corrosion
A crankshaft sensor failure typically causes weak acceleration and difficulty starting. The camshaft sensor provides fuel injection and ignition signals. A failure can cause difficulty starting, jittery idle speed, and weak acceleration. It does not cause brake failure.
Welcome to HEF JP ! What’s the machine serial # ? The wiring diagram was too large to post. The 2 wire colours for the sensors are the same ,solid black and green with a yellow stripe. Find the crank and cam sensor wire locations at the square 20 pin harness connector and at the ECU #2 connector in 2 screenshots below. .
Hi Dave thanks for that diagram I checked the wiring all good condition of ECU is good as well did you ever see them ECU to gave trouble?
Do you know how to get into the monitor “service mode“ HEF member @John C. posted a utube video on the subject. .
Look at the fuel rail pressure at cranking speed, I believe minimum is 30 mpa Never mind , I don’t think rail pressure is on the list of monitored items.
Yes I can get in to service when I'm in monitoring it shows actual engine speed at 0 when turning over the fault s are for crankshaft sensor and camshaft sensor
Hope to be helpful.
Hi thanks for all information it was an e c u it needed after all the checks