AF40 Solenoid Kit, remanufactured and ready to install. Fits the AF40. Ships fast from the USA.
If your Volvo XC90, S80, V70, XC70 or S60, or your Saab 9-3 or 9-5, has the Aisin six-speed and it thumps when you pull it into Drive, knocks on the coasting 5-4 downshift, flares on an upshift or shudders while the converter clutch is trying to lock, the valve body solenoids are one of the first things to rule in or out. GM and Saab call this transmission the AF40; Volvo and Aisin call it the TF-80SC. This is a remanufactured kit with the full complement of eight solenoids, priced well under a new set, and it ships fast from the USA.
Volvo's TechTips bulletin on the TF-80SC explains the layout plainly: eight solenoids sit on the valve body, six of them run the shift process, one controls torque converter lock-up and one sets system pressure for the whole transmission. The control module is mounted on the transmission itself, so there is no long external harness between the computer and the solenoids. Every shift on this unit is clutch-to-clutch, meaning one clutch has to let go at the same instant the next one applies, and only the solenoids decide that timing. TransGo's notes name the positions SLC1, SLC2, SLC3, SLB1, TCC, SLT and the S1 and S2 shift solenoids. In practice that is six long linear solenoids that regulate pressure in steps and two short on/off solenoids with mounting tabs, which is what you see in the photo of this kit.
Read every TCM code and check that the module software is current; Volvo stresses updates on this unit, and a reflash plus an adaptation reset fixes some shift complaints without parts. Check the fluid level warm, at the drip from the level plug. With the pan off, TransGo's test is simple: each solenoid should read 5 to 7 ohms across its pins and show no continuity from either pin to the solenoid body. A solenoid that fails either check is done. If the readings are good but the complaint stays, the problem may be worn valve body bores rather than the solenoids. Our Aisin harsh and delayed shift walkthrough lays out the test order, and the Aisin slipping under load guide helps separate a pressure problem from worn clutches.
This kit is listed for the AF40 without a year range. TransGo's coverage for the TF-80SC includes the 2006-2010 Volvo S60, V70, XC90 and S80 and the Saab 9-3 from 2006 and 9-5 in 2010, and Volvo used the gearbox in later models too. The Ford and Mazda versions are the TF-81SC, which is a different valve body, so do not order this kit for those. Small parts and calibration vary between model years, so compare connector colors and bracket shapes against your old solenoids, or send us your year and VIN before you order. All of our parts for this family are on the Aisin transmission parts page; a new-condition alternative is the AF40 solenoid kit for 2006-2014.
| Fits | AF40 |
| Part type | Solenoid Kit |
| Condition | Remanufactured |
| Brand | OEM |
| Ships | From the USA |
| Warranty | 1-year |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Yes. AF40 is the GM and Saab name for the Aisin TF-80SC six-speed that Volvo fitted to models such as the S80, V70, XC70 and XC90. The Ford and Mazda TF-81SC is a different variant and uses different solenoid kits.
This kit is remanufactured, so it costs less than a new set. If you prefer new parts, the 2006-2014 AF40 solenoid kit we also stock is new condition.
They will if a solenoid is weak or sticking. Volvo also lists a software and adaptation procedure for that complaint, so update the TCM and reset adaptations at the same time.
Measure across the two connector pins: 5 to 7 ohms is normal per TransGo. There must be no continuity between either pin and the solenoid body.
The fluid on your fill label. Volvo lists 1161540 or 1161640 for first-generation units and 31256774 or 31256775 for later ones. Check the level warm at the level plug.
Yes. The adaptations must be reset, and the transmission then needs a run of good engagements and downshifts to relearn. A generic code reader cannot do this on most Volvo and Saab models.
