A340E Solenoid Kit 2000, new and ready to install. Fits the A340E. Ships fast from the USA.
If your 2000-2004 4Runner, Tacoma, Sequoia or 100-series Land Cruiser starts in second, refuses fourth, loses reverse or never locks the converter on the highway, the three on-off solenoids bolted to the A340-family valve body are the first parts to rule in or out. This kit is the late-model service set: two new shift solenoids, one new torque converter lockup solenoid, a new pan filter and a new pan gasket, so the job is done in one pan drop with nothing reused.
The A340E is Aisin's four-speed rear-drive automatic, and in these trucks the engine computer picks gears by switching two solenoids, S1 and S2, in combination. A documented 2002 Tacoma case lays out the pattern: S1 on and S2 off for first, both on for second, S1 off and S2 on for third, and both off for overdrive. The third solenoid, SL, applies the converter clutch once the truck is in a high gear at steady speed. Because every gear depends on a two-solenoid combination, one weak or sticking unit does not just affect one shift; it can shift the whole pattern, which is why a bad S2 often shows up as a second-gear start and no reverse rather than a single missed upshift.
The 2000-and-later units also use a redesigned valve body. Sonnax separates them into Type 3 (casting 8935, V8, electronic throttle only) and Type 4 (casting 8938, V6 or V8, electronic or cable throttle), and that split is the reason this kit is sold as a 2000-up set rather than as the older 1985-1999 style.
Check the electrical side first. In the Tacoma case above, a P0755 and a no-reverse complaint survived a new S2 solenoid, a different valve body and a new computer; the real fault was a loose engine-bay ground bolt putting about 2 volts on the S2 circuit when it should have read zero. Back-probe S1 and S2 at idle and through each gear and compare the readings to the pattern above, then measure each solenoid's resistance at the case connector. Our guide on testing a transmission solenoid with a multimeter walks through the meter work, and the Aisin harsh or delayed shift walkthrough covers the hydraulic causes to rule out if the solenoids test good. If the fluid is black and full of friction material, solenoids alone will not fix it.
This listing is tagged 2000 and cross-references the A343F. The kit is supplied for the A340/A343 family in 2000-2004 4Runner (2WD and 4WD), 2000-2002 Land Cruiser, 2000-2004 Tacoma 4WD and 2001-2004 Sequoia. Toyota changed details across these years and between 2WD and 4WD units, so pull one old solenoid and compare the body, mounting tab and connector before you install, or send us your year and VIN and we will check it. Earlier 1985-1999 trucks use a different solenoid style; see the other kits in the Aisin transmission parts collection for those.
If the fluid showed wear or the truck has very high mileage, a 2000-2004 A343F shift kit corrects the late valve body's known pressure issues while the pan is off, and a 2000-later A340E rebuild kit covers the overhaul if the clutches are already burnt.
| Fits | A340E 2000 |
| Part type | Solenoid Kit |
| Condition | New |
| Brand | OEM |
| Reference | A343F |
| Ships | From the USA |
| Warranty | 1-year |
Two shift solenoids (S1 and S2), one torque converter lockup solenoid (SL), a pan filter and a pan gasket. It does not include the linear line-pressure solenoid used on some late units.
No. This is the 2000-and-later set for the redesigned valve body. Earlier trucks use a different solenoid style; send us your year and VIN and we will point you to the correct kit.
Test the circuit first. A loose ground can hold voltage on the S2 wire and cause the same code and symptoms. If the wiring and grounds check out and the solenoid reads out of spec, replacing all three at once is the cheaper repair because the pan is already off.
Use Toyota Type T-IV ATF or the fluid listed in your owner's manual for the model year. Check the level with the engine running and the fluid at operating temperature.
These trucks do not need a scan-tool relearn for on-off solenoids. Clear the codes, disconnect the battery for a few minutes if you want the shift memory reset, and road test through every gear.
