Toyota/Lexus U151E, U151F, U250E Solenoid Identification
The four linear solenoids look nearly identical when installed in the valve body. Reference the porting differences between SL1, SLT and SL2/SL3 (identical) for correct identification. 
| Name | Description | Number of Slots | Resistance (at 68°F) | Function | Connector Info |
|---|---|---|---|---|---|
| SL1 Pressure Control A | PWM* | 2 Connector-side 3 Opposite-side | 5-6 Ohms | Clutch Control | Black, 2-terminal |
| SL2 Pressure Control B | PWM* | 4 Connector-side 1 Opposite-side | 5-6 Ohms | Clutch Control | Black, 2-terminal |
| SL3 Pressure Control C | PWM* | 4 Connector-side 1 Opposite-side | 5-6 Ohms | Clutch Control | Black, 2-terminal |
| SLT Pressure Control D | PWM* | 5 Connector-side 0 Opposite-side | 5-6 Ohms | Line Pressure Rise | Black or Tan, 2-terminal |
| DSL TCC Solenoid | On/Off** | - | 11-13 Ohms | Lockup | Reddish-brown |
| S4 Shift Solenoid D | On/Off** | - | 11-13 Ohms | Shift Solenoid | Black, 1 wire |
| SR Shift Solenoid E | On/Off** | - | 11-13 Ohms | Shift Solenoid | Black, 1 wire |
*Powered & grounded by computer
**Powered by ECM & grounded through solenoid
| Solenoid Internal Harness & Connector ID | ||
|---|---|---|
 | ||
| Terminal | Function | Internal Wire Color |
| 1 | THO (Temp +) | Orange |
| 2 | SLT+ | Green |
| 3 | S4+ | Yellow |
| 4 | SL3+ | Red |
| 5 | SL2+ | Green |
| 6 | SL1+ | White |
| 7 | E2(Temp-) | Orange |
| 8 | SLT- | Grey |
| 9 | SR+ | Purple |
| 10 | DSL+ | Light Blue |
| 11 | SL3- | Blue |
| 12 | SL2- | Brown |
| 13 | SL1- | Black |
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