Solenoid Body
| Item | Description |
|---|---|
| 1 | LPC solenoid |
| 2 | SSC |
| 3 | TCC solenoid |
| 4 | SSE ON/OFF solenoid |
| 5 | SSA |
| 6 | SSB |
| 7 | SSD |
| 8 | Solenoid body |
Solenoid Body
The solenoid body contains 7 solenoids: 5 shift solenoids SSA, SSB, SSC, SSD and SSE, 1 TCC solenoid and 1 LPC solenoid. The TFT sensor is located in the solenoid body. The solenoid body is serviced as an assembly.
The solenoid body has a unique strategy data file that must be downloaded to the PCM. There is a 7-digit solenoid body identification and a 13-digit solenoid body strategy for each solenoid body. When a new solenoid body or transmission is installed, the scan tool must be used to get the solenoid body strategy data file and download it into the PCM.
If the PCM is replaced and the PCM data cannot be inhaled or exhaled, the solenoid body identification and solenoid body strategy must be downloaded into the PCM.
This transmission uses 3 types of solenoids: On/Off, normally low and normally high. On/Off solenoids open or close hydraulic passages based on the voltage signal it receives. Normally low solenoids provide hydraulic pressure proportional to supplied current. A normally low solenoid will not provide pressure without current, while it will supply high pressure with high current. Normally high solenoids provide pressure inversely proportional to supplied current. Normally high solenoids provide full output of pressure with no current and very low pressure with high current.
ON/OFF Solenoids
| Item | Description |
|---|---|
| SSE | Normally closed solenoid that blocks SOL FEED pressure from the SSE circuit. When energized, pressure from the SSE circuit positions the multiplex shift valve to direct CBLR/C456 SUPPLY pressure to the low reverse clutch. |
Normally Low Solenoids
| Item | Description |
|---|---|
| SSA | SSA blocks SOL FEED pressure from the SSA SIG circuit when low current is supplied. When energized, SSA SIG pressure positions the CB1234 clutch regulator and boost valves to direct CB1234 SUP pressure to apply the forward clutch. |
| SSC | SSC blocks SOL FEED pressure to the SSC SIG circuit when low current is supplied. When energized, SSC SIG pressure positions the CB26 clutch regulator valve to direct CB26FD/CB1234FD pressure to apply the intermediate clutch. |
| TCC solenoid | The TCC solenoid is used in the transmission control system to control the application, modulation and release of the torque converter clutch. The TCC solenoid blocks SOL FEED pressure to the TCC SOL SIG circuit when low current is supplied. When energized, TCC SOL SIG pressure positions the TCC reg apply and control valves to direct REG APPLY pressure to apply the torque converter. |
Normally High Solenoids
| Item | Description |
|---|---|
| SSB | SSB feeds SOL FEED pressure to the SSB SIG circuit to position the direct (3, 5, R) clutch regulator and boost valves to apply the direct (3, 5, R) clutch. When energized, SSB blocks SSB SIG to position the direct clutch (3, 5, R) regulator and boost valves to release the direct (3, 5, R) clutch. |
| SSD | SSD feeds SOL FEED pressure to the SSD SIG circuit to position the CBLR/C456 regulator and boost valves to apply either the low/reverse clutch or the overdrive (4, 5, 6) clutch. When energized, SSD blocks SSD SIG to position the CBLR/C456 regulator and boost valves to release either the low/reverse clutch or the overdrive (4, 5, 6) clutch. |
| LPC solenoid | The LPC solenoid is used to apply resistive force to the main regulator valve to adjust line pressure. Line pressure is inversely proportional to the current supplied to the LPC solenoid. As current decreases, line pressure increases. |