Diesel auto non start - EP on dash

75driver · 21st February 2021, 11:42

Folks, tried to start the marmite duotone last week, but it was just turning over (quite well) and not firing up...no movement on the Rev needle.
Then I noticed EP on the dash, and there was no illumination on the gear selector.
The battery symbol remains on when key is in position 2.

I checked the plenum, and all looked fine. No tide marks on the pollen filter as far as I could see, and I had a clear view of the ground through the drain hole.

I removed the battery and charged, but still the same today.

Any pointers on what to check before I remove the ecu?

Sent from my iPhone using Tapatalk

clf · 21st February 2021, 12:23

Quote:

Originally Posted by 75driver

Folks, tried to start the marmite duotone last week, but it was just turning over (quite well) and not firing up...no movement on the Rev needle.
Then I noticed EP on the dash, and there was no illumination on the gear selector.
The battery symbol remains on when key is in position 2.

I checked the plenum, and all looked fine. No tide marks on the pollen filter as far as I could see, and I had a clear view of the ground through the drain hole.

I removed the battery and charged, but still the same today.

Any pointers on what to check before I remove the ecu?

Sent from my iPhone using Tapatalk

I cannot help you with an answer, but as I could experience something similar at some point, I have had a quick look in the search, as I have seen this mentioned before. Until someone with more experience comes along THIS page has some potential info, especially from Brian in post 12.

COLVERT · 21st February 2021, 13:29

Quote:

Originally Posted by 75driver

Folks, tried to start the marmite duotone last week, but it was just turning over (quite well) and not firing up...no movement on the Rev needle.
Then I noticed EP on the dash, and there was no illumination on the gear selector.
The battery symbol remains on when key is in position 2.

I checked the plenum, and all looked fine. No tide marks on the pollen filter as far as I could see, and I had a clear view of the ground through the drain hole.

I removed the battery and charged, but still the same today.

Any pointers on what to check before I remove the ecu?

Sent from my iPhone using Tapatalk

Automatic gear box fault.---

SD1too · 21st February 2021, 15:17

Quote:

Originally Posted by 75driver

... tried to start ... but it was just turning over ... and not firing up...no movement on the Rev needle.
Any pointers on what to check before I remove the ecu?

Hello Sean,

As your engine is affected I'd say that 'EP' in this case denotes a CAN bus fault rather than something mechanical or electrical within the automatic gearbox (based upon information in RAVE).

By "the ecu", do you mean the ECM (Engine Control Module) or the automatic transmission ECU?

Simon

75driver · 21st February 2021, 17:01

Yes Simon, I mean ECM. (I was thinking it was called Engine Control Unit).
Prior to this, I would have had issues when the FBH was connected, in that the dash wouldn’t display indicators operating, when they were, so I just disconnected it.
I believe this was canbus related.

Sent from my iPhone using Tapatalk

SD1too · 21st February 2021, 21:35

Quote:

Originally Posted by 75driver

Yes Simon, I mean ECM.

That's a good move.

The absence of direction indicator tell-tales in the instrument pack is a fault with the K-bus. They don't need the high data speed which is a characteristic of the CAN bus.

Simon

marinabrian · 22nd February 2021, 08:49

It is a CANBUS fault Sean, and the ECM has been wet, there is no oil pressure warning lamp illuminated

Send me the ECM and I'll repair it.

Brian

Mike Noc · 23rd February 2021, 08:10

Quote:

Originally Posted by marinabrian

It is a CANBUS fault Sean, and the ECM has been wet, there is no oil pressure warning lamp illuminated

Send me the ECM and I'll repair it.

Brian

Good to hear you are still repairing them Bri.

75driver · 7th March 2021, 12:52

Just to finish off this thread....with a positive outcome!😁

Sorry if its a bit long and rambling 🥱.

I took Brian up on his offer to have the ECM checked out.

In the meantime, I did some multimeter checks, from this link by Brian, as found in post No. 2 from CLF. https://www.the75andztclub.co.uk/for...73&postcount=7

Essentially checked the terminals of the Main Relay R4 in the engine compartment fusebox.
Terminals 86 & 87 were at 12.34 V - good.
Terminal 30 showed continuity to pin 1, connector 1 to the ECM - good
Terminal 85 showed continuity to pin 9, connector 1 to the ECM - good.
So all looked good with the wiring.😅

Brians checks revealed that there had been some water ingress to the ECM in the past, but it didnt look too bad. In fact he coded the ECM to his own ZT and ran without problems for over 600 miles.
[FONT=&quot]To eliminate any possible intermittent fault, he transferred the data from my ECM to a known good one and sent it back to me. (Many thanks for the thorough investigation&#128077

.
When i recieved the ECM, i plugged it in....... but no joy. Still showing EP on dash🤬.

Checked again for 12v at terminal 86 & 87 of relay 4...all good.
Checked for continuity on terminals 30 and 85....no joy.😯.
Now this could have been down to my haphazard set up, where i had to use a phase tester connected in series, to insert into the ECM pin connectors, as my multimeter terminals were a fraction too wide 🤔.
Tried several times for continuity without luck, so resigned myself to checking for wire breakages when my fingers werent frozen.😞

Put the tools away, as it was only 3C, and getting dark.
Then thought I should try switching relay 2 (HRW) and relay 4. Bingo....😀😀😀😀.
Funny, I am sure that I had already done this, but knowing me, I probably mixed them up when I had them out, and put them back in the same place!🙄

Anyhow, all running now. Hopefully not coincident with something else.
I suppose i could check by switching the relays again, but probably best to leave well enough alone eh?

Many thanks for all the help and suggestions.

Mike Noc · 22nd February 2021, 08:59

Quote:

Originally Posted by 75driver

Then I noticed EP on the dash, and there was no illumination on the gear selector.

Any pointers on what to check before I remove the ecu?

Sent from my iPhone using Tapatalk

Classic symptoms of a faulty ECM so get it tested by someone who knows what they are doing. The CAN bus controller is built into the ECM, and if it fails the auto box goes into EP mode because it can't communicate with the ECM.
Check the LP fuel pumps - they won't be working with this fault.

.

21st February 2021, 17:01	#5
75driver Posted a thing or two Rover 75 saloon, manual. Rover 75 Tourer, Auto. Join Date: Jan 2013 Location: Newry Posts: 1,781 Thanks: 574 Thanked 443 Times in 371 Posts	Yes Simon, I mean ECM. (I was thinking it was called Engine Control Unit). Prior to this, I would have had issues when the FBH was connected, in that the dash wouldn’t display indicators operating, when they were, so I just disconnected it. I believe this was canbus related. Sent from my iPhone using Tapatalk __________________ 2006 75 Contemporary SE diesel manual (#1) 2003 75T Connoisseur SE diesel auto (For Comfort) 2005 75 Connoisseur SE diesel auto (Marmite duotone ) 2006 75 Connoisseur SE diesel auto (The last one?) 2009 E220 (For a change) 2018 L200 (For Big & Heavy Things) 1976 W114 250 Manual (For Sundays)

22nd February 2021, 08:49	#7
marinabrian MG ZT Join Date: Jan 2011 Location: Newcastle Upon Tyne Posts: 20,151 Thanks: 3,565 Thanked 10,837 Times in 5,718 Posts	It is a CANBUS fault Sean, and the ECM has been wet, there is no oil pressure warning lamp illuminated Send me the ECM and I'll repair it. Brian Last edited by Reebs; 22nd February 2021 at 15:03.. Reason: Antagonistic comment removed, Brian. Now behave yourself!

7th March 2021, 12:52	#9
75driver Posted a thing or two Rover 75 saloon, manual. Rover 75 Tourer, Auto. Join Date: Jan 2013 Location: Newry Posts: 1,781 Thanks: 574 Thanked 443 Times in 371 Posts	Diesel auto non start - EP on dash Just to finish off this thread....with a positive outcome!😁 Sorry if its a bit long and rambling 🥱. I took Brian up on his offer to have the ECM checked out. In the meantime, I did some multimeter checks, from this link by Brian, as found in post No. 2 from CLF. https://www.the75andztclub.co.uk/for...73&postcount=7 Essentially checked the terminals of the Main Relay R4 in the engine compartment fusebox. Terminals 86 & 87 were at 12.34 V - good. Terminal 30 showed continuity to pin 1, connector 1 to the ECM - good Terminal 85 showed continuity to pin 9, connector 1 to the ECM - good. So all looked good with the wiring.😅 Brians checks revealed that there had been some water ingress to the ECM in the past, but it didnt look too bad. In fact he coded the ECM to his own ZT and ran without problems for over 600 miles. [FONT=&quot]To eliminate any possible intermittent fault, he transferred the data from my ECM to a known good one and sent it back to me. (Many thanks for the thorough investigation&#128077. When i recieved the ECM, i plugged it in....... but no joy. Still showing EP on dash🤬. Checked again for 12v at terminal 86 & 87 of relay 4...all good. Checked for continuity on terminals 30 and 85....no joy.😯. Now this could have been down to my haphazard set up, where i had to use a phase tester connected in series, to insert into the ECM pin connectors, as my multimeter terminals were a fraction too wide 🤔. Tried several times for continuity without luck, so resigned myself to checking for wire breakages when my fingers werent frozen.😞 Put the tools away, as it was only 3C, and getting dark. Then thought I should try switching relay 2 (HRW) and relay 4. Bingo....😀😀😀😀. Funny, I am sure that I had already done this, but knowing me, I probably mixed them up when I had them out, and put them back in the same place!🙄 Anyhow, all running now. Hopefully not coincident with something else. I suppose i could check by switching the relays again, but probably best to leave well enough alone eh? Many thanks for all the help and suggestions. __________________ 2006 75 Contemporary SE diesel manual (#1) 2003 75T Connoisseur SE diesel auto (For Comfort) 2005 75 Connoisseur SE diesel auto (Marmite duotone ) 2006 75 Connoisseur SE diesel auto (The last one?) 2009 E220 (For a change) 2018 L200 (For Big & Heavy Things) 1976 W114 250 Manual (For Sundays) Last edited by 75driver; 7th March 2021 at 14:09..

21st February 2021, 11:42	#1
75driver Posted a thing or two Rover 75 saloon, manual. Rover 75 Tourer, Auto. Join Date: Jan 2013 Location: Newry Posts: 1,781 Thanks: 574 Thanked 443 Times in 371 Posts	Diesel auto non start - EP on dash Folks, tried to start the marmite duotone last week, but it was just turning over (quite well) and not firing up...no movement on the Rev needle. Then I noticed EP on the dash, and there was no illumination on the gear selector. The battery symbol remains on when key is in position 2. I checked the plenum, and all looked fine. No tide marks on the pollen filter as far as I could see, and I had a clear view of the ground through the drain hole. I removed the battery and charged, but still the same today. Any pointers on what to check before I remove the ecu? Sent from my iPhone using Tapatalk __________________ 2006 75 Contemporary SE diesel manual (#1) 2003 75T Connoisseur SE diesel auto (For Comfort) 2005 75 Connoisseur SE diesel auto (Marmite duotone ) 2006 75 Connoisseur SE diesel auto (The last one?) 2009 E220 (For a change) 2018 L200 (For Big & Heavy Things) 1976 W114 250 Manual (For Sundays)