2006 S-Type Gearbox Fault - No crank condition RESOLVED

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Jun 22, 2020 | 07:28 PM

#41

Norri

Joined: Oct 2007

Posts: 120,859

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From: PHX some of the time

Quote:

Originally Posted by raphsp3aks

Any idea on how to mark this thread as solved?

All done. Congratulations.

Jun 23, 2020 | 01:33 AM

#42

SRT

Senior Member

Joined: Jun 2017

Posts: 104

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Quote:

Originally Posted by Norri

All done. Congratulations.

I love it when a plan comes together!
And when we get the results! And even more so when it is apparent in the headline!
Well done to all involved.

Last edited by SRT; Jun 23, 2020 at 01:36 AM.

Jun 23, 2020 | 08:32 AM

#43

raphsp3aks

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Joined: Dec 2014

Posts: 48

Likes: 13

From: Midwest

Quote:

Originally Posted by SRT

I love it when a plan comes together!
And when we get the results! And even more so when it is apparent in the headline!
Well done to all involved.

I couldn’t have done it without the efforts of @kr98664 . Thank you for spending your time helping me solve this issue. I’ll do my best to pay it forward.

Jun 25, 2020 | 11:44 AM

#44

clubairth1

Veteran Member

Joined: May 2009

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Likes: 3,312

From: home

Another good job!!
That was a tough bit of troubleshooting for sure!
.
.
.

Jan 1, 2022 | 03:45 PM

#45

elDariusVargas

Senior Member

Joined: Sep 2021

Posts: 299

Likes: 40

From: Cluj-Napoca

Hey everyone!

Im testing my TCM cables too.
Grounds seem good, live positive (coresponding to f33 in front fusebox) has power,
but the Green Orange cable that is ignition powered (coresponding to f15 in primary fusebox) is measuring 11.7v both at the TCM plug and at the F15 fuse (so do the other fuses there, powered by the ignition)
is it normal?

thank you!

Jan 1, 2022 | 08:15 PM

#46

raphsp3aks

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Joined: Dec 2014

Posts: 48

Likes: 13

From: Midwest

[

QUOTE=elDariusVargas;2481124]Hey everyone! Possibly

Im testing my TCM cables too.
Grounds seem good, live positive (coresponding to f33 in front fusebox) has power,
but the Green Orange cable that is ignition powered (coresponding to f15 in primary fusebox) is measuring 11.7v both at the TCM plug and at the F15 fuse (so do the other fuses there, powered by the ignition)
is it normal?

thank you![/QUOTE]

possibly. What’s the condition!?

Jan 2, 2022 | 05:50 AM

#47

elDariusVargas

Senior Member

Joined: Sep 2021

Posts: 299

Likes: 40

From: Cluj-Napoca

Quote:

Originally Posted by raphsp3aks

hey raph, thanks for replying!

ive got a p1643 ( communication error between ecu and tcm:

- i know for a fact that the Ecu, Tcm & J gate are all ok.
- Tested the continuity of the cables from the tcm plug to the ecu plug and to the fuseboxes, and they have a very low (towards 0) resistance, so they seem ok
- tcm connector has two positive calbles:
#1: Brown Red Live positive has same voltage as battery: 12.2v
#2: Green Orange ignition positive measures 11.7v. ( and so i tested at its fuse, in the primary fusebox, and they all measure 11.7)

This is why im asking if its normal?
many thanks 😎

Dec 12, 2023 | 09:02 PM

#48

raphsp3aks

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Joined: Dec 2014

Posts: 48

Likes: 13

From: Midwest

Coming back here for those that might be dealing with the “Gearbox Fault” or “Gear Box Fault”. Mine ended up being a broken wire on the right side (US Passenger) wheel well. Take a look at post #50 below:

https://www.jaguarforums.com/forum/s...3/#post1025128

Dec 13, 2023 | 04:37 AM

#49

elDariusVargas

Senior Member

Joined: Sep 2021

Posts: 299

Likes: 40

From: Cluj-Napoca

Sorry i forgot to conclude my case,
mine was faulty because a fluid leak at the tcm plug.
Replaced the sleeve connectir gasket assembly with a febi one and its been all good for 2 years now

Mar 18, 2026 | 12:36 PM

#50

STypeOwner

Junior Member

Joined: Mar 2026

Posts: 1

Likes: 1

THANK YOU

Quote:

Originally Posted by raphsp3aks

@kr98664

It was a wire from fuse 33 in the under hood block that goes to the transmission. The wire supplies constant battery voltage to the transmission control module, and for whatever reason that wire failed from rubbing near the passenger bumper. Replaced the wire and it now purrs.

I remember some conversation about a capacitor on one of those wires. Was almost certain the capacitor failed, but it was just the section of wire that needed to be replaced. Was dropping voltage, but isn’t now that it was replaced.

Any idea on how to mark this thread as solved?

Brown and Red earthing line from Fuse F33 in the front engine fuse box leading down the right hand side wing, across the front bumper and up the left hand side wing. Broken wire approx 3/4 the way along the right hand side of the vehicle behind the right hand side headlight cluster.

you guys helped me out. I had the same issue with a no crank issue, replaced the J gate and still the same 'gear box fault' with a code U0402:00. Something about invalid data from TCM (trans control module), after messing around with fuses and wondering if it was gear box fluid, low battery, etc etc...I found this. Turns out it was a broken wire on the wiring loom from the Fuse F33. Thank you! 😊