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Hi,
So I have this hyundai tucson 2008, 2 liter diesel engine, cranking no start,
I tested the crank signal, it's ok
Good pressure at common rail sensor, there is fuel.
I did the injector test pulse, with a test light and no pulse, I checked the wiring between the ECM and the injectors, no problem ...
No DTC errors, no immobiliser faults.... So my diagnosis was a bad ECM, I send it to a guy who can test it, and his says that there is no problem, the ECM work fine... after I did all this work, the customer told me that just before the no start condition, the alarm turned on and won't go off, then cut off by itself ... the alarm is genuine hyundai, the alarm don't work anymore. Can the alarm cut the injection off? can someone help me with a wiring diagram. how can I bypass the alarm, if it's broken?
thank you
You can see rail pressure in live data or you're just seeing fuel come out of a pipe and assuming it has pressure? It may not pulse the injectors until it has rail pressure. Also be careful using a test light on crd injectors. They may be a piezo style which I would be very careful with.
matt.white wrote: You can see rail pressure in live data or you're just seeing fuel come out of a pipe and assuming it has pressure? It may not pulse the injectors until it has rail pressure. Also be careful using a test light on crd injectors. They may be a piezo style which I would be very careful with.
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I can see both of them, I can tell there was a good pressure. but i can't really remember how much. How would you proceed if you were me.
I'm just replying to say I'm not ignoring you. I can't really offer much sorry. If it has cam and crank input, no codes, good fuel pressure and powers and grounds it should go. I can't see a MAF or coolant temp or something stopping it from going.
I'm sorry. I am thinking about it. I'm just not sure at this stage.
matt.white wrote: I'm just replying to say I'm not ignoring you. I can't really offer much sorry. If it has cam and crank input, no codes, good fuel pressure and powers and grounds it should go. I can't see a MAF or coolant temp or something stopping it from going.
I'm sorry. I am thinking about it. I'm just not sure at this stage.
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Thank you for replying, this what I was telling myself it should go. Yesterday after few long crank, to see if any code came, for one time a p0340 camshatf circuit malfunction came, and I couldn't duplicate it, do you think it's enough to put a new cam sensor in the car?
I wouldn't suggest replacing the sensor based purely on the code. Do you have a scope to check for cam signal? The cam signal missing would definitely stop it from running. I honestly thought about suggesting had you checked it. Is it a 2 wire vrs or 3 wire Hall effect?
