Five-solenoid kit plus internal wire harness for Toyota U140E, U240E and U241E automatics in Camry, RAV4, Highlander, Avalon and Matrix.
If your Camry, RAV4, Highlander, Avalon, Solara or Matrix binds up on the 1-2 shift, flares between 2nd and 3rd, shudders at light throttle when the converter should lock, or keeps setting shift solenoid codes, the parts on the bottom of the valve body are the usual suspects on the Aisin U140E four-speed and its U240E and U241E relatives. This kit replaces all five electrical control parts at once (SLT, SL1, SL2, S4 and DSL) and includes the internal wiring harness that runs from them to the case connector, so you are not leaving a heat-hardened, cracked harness in place behind new solenoids.
The U140 family is an adaptive, computer-shifted transaxle with no conventional shift solenoid A and B arrangement. SL1 and SL2 are linear clutch control solenoids, S4 is an on/off shift solenoid, SLT sets line pressure from throttle input, and DSL handles converter lock-up. Sonnax publishes the firing order: SL1 and SL2 are both on in 1st, only SL2 in 2nd, all three off in 3rd and only S4 on in 4th. DSL does more than lock the converter. It also energizes in manual low to stroke the B2 control valve and apply the B2 clutch, and it is turned on in reverse to block oil to B2. That double duty is why a sticking DSL can cause problems that look like a hard-parts failure.
Rule out the engine computer first. Sonnax recommends a simple test for 1-2 bind-up: unplug the transmission connector and select reverse. With no power to the solenoids you should still get reverse; if you do not, suspect the DSL solenoid or B2 control valve; if reverse engages, the computer is the stronger suspect. Sonnax also notes that 2001-2003 RAV4 models had faulty ECMs that set P0750, P0753, P0755, P0758 and P1760 with harsh shifts, and that resetting learned adaptive values sometimes cures binding by itself, so do that before buying anything. Then check each solenoid circuit at the case connector; our guide to testing solenoids without a factory scan tool walks through the resistance and activation checks.
Listed fitment is the U140E, U240E and U241E in the Toyota Avalon, Camry, Celica, Highlander, Matrix, RAV4 and Solara. No year range is given, and Toyota put other four- and five-speed Aisin units in the same bodies, so read the transmission code on the tag or build data before ordering. Sonnax splits these valve bodies into 1999-2005 and 2006-2012 versions, each with and without a central lube feed for AWD models, so compare the connector shape, harness routing and solenoid brackets in the photos against your own unit. If you are unsure, send us your year and VIN and we will check it. Every Aisin part we stock is on the Aisin transmission parts page.
The work starts with the fluid drained and the pan off, and because the harness passes through the case to the external connector, follow the factory procedure for your vehicle when releasing the connector. Mark each solenoid location before you unbolt anything, lube the new O-rings with clean ATF, and torque bracket and valve body bolts evenly. Replace the filter and pan gasket while the pan is down; a U140E and U240E filter and pan gasket kit covers that. Refill with the Toyota ATF your vehicle specifies (the listing calls for Toyota WS) and confirm against your owner's manual. Afterward reset adaptive values, warm the fluid and drive at light, steady throttle through every shift until it feels normal; our adaptive relearn guide explains why. If the valve body bores are worn and the shifts stay rough with new solenoids, a remanufactured U140E valve body is the next step. For routine fluid service on these cars, see our Toyota Camry transmission service guide.
These parts are remanufactured, inspected and calibrated, and may show light surface marks that do not affect function.
| Transmission | Toyota U140E, U240E, U241E |
| Solenoids | SLT, SL1, SL2, S4, DSL |
| Harness | Internal wire harness included |
| Listed fitment | Avalon, Camry, Celica, Highlander, Matrix, RAV4, Solara |
| Condition | Remanufactured, calibrated |
| Weight | 2.2 lb |
Five: the SLT line pressure solenoid, SL1 and SL2 clutch control solenoids, the S4 shift solenoid and the DSL lock-up solenoid, plus the internal wire harness that connects them to the case connector.
The listing covers the U140E, U240E and U241E. Confirm the code on your transmission tag, and compare the connector and harness routing with the photos, because the valve body changed between the 1999-2005 and 2006-2012 versions. Send us your year and VIN if you want us to check.
The internal harness lives in hot fluid and its insulation hardens and cracks with age. A cracked wire can set the same intermittent solenoid codes as a bad coil, so replacing solenoids alone may not clear the fault.
Unplug the transmission connector and try reverse. No reverse points to the DSL solenoid or the B2 control valve; if reverse works, suspect the ECM. Reset adaptive values first, since that alone sometimes cures the bind.
Use the Toyota ATF your vehicle specifies. The listing calls for Toyota WS; check your owner's manual or dipstick label, refill to the correct level hot, then reset adaptive values and drive through all shifts.
