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Hi Guys,
Yet another problem.
Today when I first started the car it didn't fire up though kept cranking. After about 3 seperate attempts it fired with a cloud of white smoke. Got onto the road and within seconds came beep beep and gearbox fault. Dash gear indicator vanished and car was moving slowly even with high RPM. Stopped and restarted , things seems okay. But after driving for about 5KMs it came back. Stop & start then back to normal. It happened thrice. Came home and Nanocom says 'Solenoid Power fault' (this is without indash gear box fault) . Tried to clear it , can't.

Can someone tell me whats wrong, please?

Only thing that relates is that yesterday the car was tested for annual emmision testing & the car passed it.
While testing they took the engine upto 3000-3500 RPM, few times.
Gearbox oil level is on high mark and oil does look okay. The battery is good with 12.6V with engine off and around 14 V when engine running.

The TCM connector, 19 provides power to all 4 solenoids (MV1, MV2, TC Lock, Pressure Regulator) and it could be either failure in that line or TCM itself does not provide power.
Measured solenoid resistance;
MV1 = 28.3
MV2 = 28.5
MV3 = 33.5
MV4 = 6.7
Your views please?
Thanks

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Put a new battery in it.

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+1 on a new battery. If it stays the same, then try speaking to Dave Ashcroft at Ashcroft Transmissions if nobody else has any ideas.

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"solenoid power fault" I think means solenoid power circuit low voltage . It is on the L322 box, so I am +1 on another battery.

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Hmm..... can't find anything wrong with the battery or charging.
Battery shows above 12.5v when engine off and stays around 14 V when it's running.

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If the battery is OK, how about the earthing points? Do they need a clean up? Particularly engine and gearbox.
Also gearbox electrical plugs/sockets. Squirt of contact cleaner inside?

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Must check the earth points.
Anyone has a ATSG manual on 4HP22/24 ?
I'm doubtful of MV4 resitance, compared to others.

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Yes, but how do I do attachments? Suppose I could go over to the dark side to post it.

........ done.

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I'd put a decent battery on it --- my bosses 322 sport had same issue so nicked battery from Dyno room --- fault fixed πŸ‘πŸ‘

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Thanks Dave, got it.
Checked the earth points and no visible issues.
Must get a good battery from a friend and see .

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A new battery (3 weeks old) from a friends car fitted. No change.
Initially no fault after few seconds idling, the gearbox fault re-appaers and dash gear indiactor vanishes.

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Have you checked the XYZ switch to see it isn’t corroded inside? Just a thought.

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Gearbox Fault coming up on the dash and no gear indicator means it's gone into limp home mode. That isn't the cause but a symptom.

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Correct Richard. Every time I start it, after few seconds it goes to limp mode.
Nanocom gave 'solenoid power fault' and measured resistance of 4 solenoids are in line with standard figures.
Ruled out the battery too.
I'm thinking that it could be TCM fault code 1 where TCM internal relay malfunction.

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Well checked power in pins 1 & 19 of TCM.

With IGN ON, 1 has 13.8v and 19 nothing.

Time to replace the TCM , and see.

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Surely if power is missing from pin 19, it would be wiser to check where the power comes from? It's unlikely to be the TCM.

Edit: wait, is 19 an output rather than an input? In that case it would make sense.

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1 is input and 19 output, goes to 4 soleniods.

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Replaced the TCM with a used part from bay-e and works perfect.
Incidently, the thud from D & R too , gone.:LOL::LOL::LOL: