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2007 s40 2.4i transmission/antiskid service required

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
Bph721
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2007 s40 2.4i transmission/antiskid service required

Post by Bph721 » Thu Jan 10, 2019 10:17 am

Hello,

Subject car is displaying transmission service required and anti-skid service required messages/lights. The vehicle is also always in 4th gear. If switched to manual mode 2nd can be selected but thats it. This has been described to me as limp mode.

I cant remember the specific codes, but there was a vehicle speed sensor code on the OBD. I am going to scan the codes again soon and try to be more specific.

Much Of the research that i have done suggests a complicated reltionship between control modules and sensors that can cause the car to go into limp mode. I have gone through and check the connections on the TCM and other various sensors and modules. What are common problems that can cause the car to go into limp mode?

In addition to the alerts and limp mode there is also an intermittent high pitched whistling sound coming from the engine compartment.

If anyone can suggest a good starting point for troubleshooting i would greatly appreciate it!!



Bph721
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Re: 2007 s40 2.4i transmission/antiskid service required

Post by Bph721 » Fri Jan 11, 2019 7:03 am

CODES:

ECM-530D TCM Faulty signal
TCM-0088 Transmission speed sense signal missing
TCM-0082 Output speed sense missing
ABS 0101 Communications problems with the ECM



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oragex
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Re: 2007 s40 2.4i transmission/antiskid service required

Post by oragex » Fri Jan 11, 2019 7:17 am

Maybe a problem with the speed sensor ? Try a google search with "volvo s40 speed sensor forum"
May even be more than just one issue. The anti-skid message may be caused by a cracked reluctor ring or a slack axle center bolt


2003 2.4i S60 automatic 125k miles
DIY Volvo repairs videos https://www.youtube.com/playlist?list=P ... s0FSVSOT_c

Bph721
Posts: 7
Joined: Thu Jan 10, 2019 9:04 am
Year and Model: 2007 S40 2.4i
Location: South Carolina
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Bph721

Re: 2007 s40 2.4i transmission/antiskid service required

Post by Bph721 » Fri Jan 11, 2019 7:28 am

thanks for your reply. I have been trying to test the wheel speed and vehicle speed (on transmission) sensors, but I am having problems finding a good spec for resistance. I checked all of the wheel speed sensors and they all read infinite resistance. Everything I have seen online for these two-wire type sensors suggests a resistance of 800-1500 Ohms. I checked 3 of the 4 wheel sensors and they all read infinite. there are 2 sensors (vehicle speed and something else) on the transmission. I checked resistance on those and they were reading around 5.7 MOhms. Do you know of a better way to verify any of these sensors (aside from buying new ones)


thanks again!



Bph721
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Joined: Thu Jan 10, 2019 9:04 am
Year and Model: 2007 S40 2.4i
Location: South Carolina
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Bph721

Re: 2007 s40 2.4i transmission/antiskid service required

Post by Bph721 » Mon Jan 14, 2019 10:57 am

I think we figured this one out. Opened up the TCM and found that 2 wires had lifted off of the board. They happened to be for the speed sensors on the transmission. Repaired the module today. Smoke test tonight. Thanks
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