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9th December 2018, 10:27 | #51 | |
Doesn't do things by halves
Rover 75 2.5 Connoisseur Auto (1999) Dealer launch model. Join Date: Mar 2007
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So it's the "engine running" signal which the ECM sends on the CAN bus which is necessary for the HRW to operate*. That's virtually the same principle used on my 34 year old SD1 so well done cb750Chris for spotting it. All the talk about fuel burning heaters and external temperature sensors was unfortunately irrelevant to the problem, but interesting nonetheless. Simon * Located in RAVE Air Conditioning, Description & Operation 82-25: "Rear window heater switch: Enabled while the engine is running".
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. Last edited by SD1too; 9th December 2018 at 11:10.. Reason: Adding * |
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9th December 2018, 10:37 | #52 | ||
Doesn't do things by halves
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Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
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9th December 2018, 11:24 | #53 |
Doesn't do things by halves
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Or it's the ECM itself being affected by the cold (two possibilities).
Simon
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"Whatever is rightly done, however humble, is noble." Sir Henry Royce. |
9th December 2018, 18:11 | #54 |
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9th December 2018, 18:16 | #55 |
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So, my next thing to do it's to try to change the NEC IC from the spare ECU to the main one. If I mess this up, I need to buy a new ECU anyway.
I saw 2 useful videos on YT - THIS and THIS I need to know for sure if the NEC IC is responsible for canbus failure and not to change it for no purpose. I'm talking about THIS ONE If someone has a better photo with it, I would be grateful! |
9th December 2018, 18:27 | #56 | |
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The car will work normally afterwards Last edited by marinabrian; 9th December 2018 at 18:35.. |
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9th December 2018, 21:29 | #58 | |
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Both ECM are NNN100692 so non EOBD manual versions, so swapping the 95P08 will work Brian |
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9th December 2018, 22:44 | #59 | |||
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75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007
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There's not really any room for bubble wrap and all it will do is trap any dampness that managed to get in there Russ
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Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details. |
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