Replaces the TCC lockup solenoid, both shift solenoids, the filter and pan gasket on the AW4/A340 automatic in Jeep Cherokee XJ and Toyota 4Runner, Pickup and T100.
A Jeep Cherokee XJ with the 4.0L that will not upshift in Drive but shifts fine when you move the lever yourself is one of the most familiar AW4 complaints, and the three solenoids on the valve body are a prime suspect. This kit puts everything for a one-time pan-down service in a single box: both shift solenoids, the torque converter lock-up solenoid, a new filter and a pan gasket. The same solenoid hardware is shared by Toyota's A340 family, so the kit is also listed for the 4Runner, Pickup, T100, Tacoma, Supra, Cressida and Previa, and the Lexus SC300.
Jeep's AW4 overhaul manual describes three solenoids. Solenoids 1 and 2 move the shift valves, and the on/off pairing of the two selects first through fourth, with solenoid 2 also involved in overdrive. Solenoid 3 applies the converter clutch. The transmission control unit simply grounds each one; there is no throttle valve cable doing the work. That is why an open winding or a sticking plunger produces such clear-cut results: the controller asks for third, the hydraulics never receive the signal, and the transmission stays where it was.
Unplug the harness and measure each solenoid from its terminal to the mounting bracket. The Jeep manual lists 11 to 15 ohms as good; open, shorted or far out of range means the solenoid is bad. Our walkthrough on testing a transmission solenoid with a multimeter covers the meter setup. Do not go hunting for P-codes on an XJ: the AW4 is run by its own controller, and the P0740 and P0743 entries in the Cherokee engine tables apply to a different automatic. If the solenoids measure good, check the controller grounds and connector, or look at the hydraulics with our pressure testing guide.
Jeep: Cherokee XJ 1987 to 2001, Comanche MJ 1988 to 1992 and Grand Wagoneer 1987 to 1988 with the 4.0L and AW4. Toyota and Lexus: 4Runner, Pickup, T100, Tacoma, Supra, Cressida and Previa with the A340, A340E, A340F or A340G, plus the 1992 to 1997 SC300. It replaces OE numbers 85420-22080, 35250-50030, 85420-30110, 85420-12020, 89956 and 97420K. Because one filter and one gasket cannot match every pan across these chassis, lay the new filter and gasket against your old ones before you start; the solenoids are what interchange across the list. Send us your year and VIN if you are unsure, or see everything else for this family on our Aisin transmission parts page.
| Type | Transmission solenoid service kit (TCC lockup + 2 shift solenoids + filter + gasket) |
| Transmission | Aisin-Warner AW4 / Toyota A340, A340E, A340F, A340G four-speed automatic |
| Kit includes | 1x TCC/lockup solenoid, 2x shift solenoids, 1x transmission filter, 1x pan gasket |
| Jeep fitment | Cherokee XJ 1987-2001, Comanche 1988-1992, Grand Wagoneer 1987-1988 (4.0L / AW4) |
| Toyota / Lexus fitment | 4Runner, Pickup, T100, Tacoma, Supra, Cressida, Previa; Lexus SC300 1992-1997 |
| Replaces OE | 85420-22080, 35250-50030, 85420-30110, 85420-12020, 89956, 97420K |
| Item weight | 1.43 lb |
Yes. It is listed for the 1987 to 2001 Cherokee XJ with the 4.0L and AW4. Compare the new filter and pan gasket to your old ones before install, since the kit also covers Toyota pans.
One torque converter lock-up solenoid, two shift solenoids, one transmission filter and one pan gasket.
Moving the lever by hand selects gears hydraulically, while Drive relies on the controller firing solenoids 1 and 2. When manual shifting works and Drive does not, a failed shift solenoid, its wiring, or the controller is the likely cause.
Measure from each solenoid terminal to its bracket. The Jeep AW4 manual gives 11 to 15 ohms as the good range.
Jeep specifies Mercon-type ATF for the AW4, with Dexron II as the alternate on early models. Toyota and Lexus owners should use the ATF listed in their owner's manual for that year.
