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23rd March 2019, 15:51 | #1 |
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diesel oil light
I am still trying to ascertain how the oil light is powered on a diesel. I understand that the ECU reads the status of the sensor from co 606 pin 41 but how is this information conveyed by the ECU to the light itself ,and where is the other side of the light powered from. Also does the ECU need the connection to the sensor ie earth or no earth ,in order to start/ run the engine ,or can it be disconnected .I will be grateful for any help thanks.
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23rd March 2019, 17:08 | #2 |
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Why do you want to know.? Is the light staying on all the time.?
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23rd March 2019, 18:28 | #3 |
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The status of the oil light is relayed to the IPK on the CANbus. If your oil light doesn't come on when you turn the key to position II then chances are that the CANbus controller has failed in the ECM, a common result of the ECM going for a swim
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23rd March 2019, 20:15 | #4 |
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Tony is running a M47R in a boat, so not as straightforward as one might think
To be fair, the oil pressure is fed via the CANBUS to the IPK, and I suspect the easiest way to address this is to fit either a bog standard oil pressure switch and separate lamp, or an oil pressure gauge I would love to see some pictures of your install Brian |
23rd March 2019, 20:55 | #5 |
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24th March 2019, 09:20 | #6 | |
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Quote:
Plus one more to see some install photos. |
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24th March 2019, 10:32 | #7 | |
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24th March 2019, 15:43 | #8 | |
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24th March 2019, 17:16 | #9 |
Why? ...
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Without any doubt I would quickly take on swapping the alternator in that or even changing the thermostat ..
Thanks for sharing. |
24th March 2019, 17:43 | #10 | |
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Quote:
Just curious-----is the oil pressure switch a normally closed switch which is opened by oil pressure once the engine is running ? ( thus switching off the dash light. ) |
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