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TCM Module Died. P0700 P0722. Used Part Number Compatibility? [bad abs module] Topic is solved

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

Vovoroom
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TCM Module Died. P0700 P0722. Used Part Number Compatibility? [bad abs module]

Post by Vovoroom » Sat May 04, 2019 5:42 am

Hi all,

I have a P0700 and a P0722. Check engine light and flashing W arrow. Sometimes the ABS and BRAKE light come on but I think that's a result of these codes. Brakes are fine if I slam on them randomly.

The internet tells me I would need a transmission speed sensor 30618272. Not the wheel speed sensor.

Also would need a new TCM possibly. However, I'm trying to get one used so I can avoid having to program it at the dealership. On FCP Euro it says the part number is 30644070. If I go on eBay, there are so many "compatible" 2001 Volvo S40 used TCMs with completely different part numbers. Does the hardware matter more or is it just a factor of did the TCM also come out of a 2001 Volvo S40? I don't want to buy the wrong used TCM.

If anyone can help me on this, that would be great!



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RickHaleParker
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Re: TCM Module Died. Used Part Number Compatibility?

Post by RickHaleParker » Sat May 04, 2019 7:40 am

Vovoroom wrote:
Sat May 04, 2019 5:42 am
The internet tells me I would need a transmission speed sensor 30618272.
Maybe not, clean the transmission speed sensor electrical connector, check the loom for shorts, opens and missing power. Fix anything found then clear the codes.

It could be that simple.

Ignore the P0700 it just telling you got a P0722 in the TCM .
P0700 is like a security monitor, who tells people when the fire alarm is going off.
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Vovoroom


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

Vovoroom
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Vovoroom

Re: TCM Module Died. Used Part Number Compatibility?

Post by Vovoroom » Sat May 04, 2019 8:30 am

Thank you Rick! I purchased the AT Speed Sensor. Do you think that would potentially cure my intermittent ABS and BRAKE light too? The mechanic said they didn't find anything with the brakes or the module. Wiring was good and nothing dirty.

I will ask them to fix one piece at a time and see where it goes from there. I assume fixing the transmission speed sensor and transmission control module (if required) would take less than 1 hour each.



Vovoroom
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Re: TCM Module Died. Used Part Number Compatibility?

Post by Vovoroom » Thu May 16, 2019 2:33 pm

Replaced with a used TCM and new speed sensor. Code P0700 and P0722 and ABS/Brake lights will still throw. Must be something else.



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Re: TCM Module Died. Used Part Number Compatibility?

Post by RickHaleParker » Thu May 16, 2019 3:03 pm

Vovoroom wrote:
Sat May 04, 2019 8:30 am
Wiring was good and nothing dirty.
I'm sure the wiring was good at one time but this is now.
If it does not shine like a new penny, it is dirty.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

Vovoroom
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Re: TCM Module Died. Used Part Number Compatibility?

Post by Vovoroom » Thu May 16, 2019 3:27 pm

You were spot on. They just drove the car around for testing again and the used TCM was bad. It wouldn't upshift and it stayed stuck in 1st gear. No clue what is happening and what to do with this car.

Must be a faulty ABS module.



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RickHaleParker
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Re: TCM Module Died. Used Part Number Compatibility?

Post by RickHaleParker » Fri May 17, 2019 1:40 am

Take it to an Automotive Electrical Specialist and have him check out the wiring harness. There are a lots of Mechanics that cannot diagnose a wiring problem because electricity is mysterious to them.


Got a degree in electronic, cannot find a job. Take a look at Automotive Electrical Specialist, it is a position that cannot be outsourced to China.


Platform: P80 1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

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alschnertz
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Re: TCM Module Died. Used Part Number Compatibility?

Post by alschnertz » Fri May 17, 2019 7:10 am

I realize this isn't the same exact issue, but it may be of some help.
https://www.matthewsvolvosite.com/forum ... 2&start=10
Going on 4 years and an additional 50,000 miles since the repair.

Also, on my 850, the TRACS and ABS lights would randomly come on.
That turned out to be the brake pedal position switch.
I simply removed it and resoldered the joints.
Not sure if a S40 uses the same kind of switch.


'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

Vovoroom
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Re: TCM Module Died. Used Part Number Compatibility?

Post by Vovoroom » Fri May 17, 2019 7:47 am

alschnertz wrote:
Fri May 17, 2019 7:10 am
I realize this isn't the same exact issue, but it may be of some help.
https://www.matthewsvolvosite.com/forum ... 2&start=10
Going on 4 years and an additional 50,000 miles since the repair.

Also, on my 850, the TRACS and ABS lights would randomly come on.
That turned out to be the brake pedal position switch.
I simply removed it and resoldered the joints.
Not sure if a S40 uses the same kind of switch.
Thanks for the help! For now, I think I will get the ABS Module rebuilt since that seems to be a very common issue on the forums here. Plus I can quickly pop it off and put it back on by myself. If it turns out this does not fix it, then I will look at your suggestion. Good to know that you got 235,000 miles out of it (and hopefully still going strong). I have around 170,000. I have no issue putting a couple hundred bucks into the car if it can last as long as your vehicle. It's much better than having a car payment and having higher insurance on a newer vehicle.



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alschnertz
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Re: TCM Module Died. Used Part Number Compatibility?

Post by alschnertz » Fri May 17, 2019 10:32 am

It's still going, though rust is starting to take a more aggressive hold.
Yes, that trip to the dealer was going to be the last straw. I was only willing to put a few hundred into it at that point.
Glad they found the issue and I had it addressed. When I got it back I said I was going to drive the wheels off it.

I just re-read through my old thread and realize that it doesn't mention something.
Being an old school guy, I thought the issue was mechanical and not electrical.
So I swapped in a 125,000 mile transmission only to find that the exact same symptoms persisted.
Therefore the engine and chassis have 235K, but the transmission has 175K. Still, I have no reason to believe the transmission doesn't have tens of thousands of miles left in it.

It was a learning experience and gave me a new appreciation for the car's electronics.
If you know anyone looking for a good 185K transmission, it's still sitting in the garage and would like to find a home cheap!


'60 PV544, '68 220, '70 145S, '86 745T, '95 854T, '01 S40
'84 Prelude
'06 MPV
'13 Ford Focus SE

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