Hydraulic Circuit Identification and Function
WARNING: This page is about a different car, the 2010 Lincoln MKX and 2010 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.
HYDRAULIC CIRCUIT IDENTIFICATION CHART
| Circuit Name | Description |
|---|---|
| CB1234 | Regulated pressure from the forward (1, 2, 3, 4) clutch regulator valve to the forward clutch. |
| CB1234 FDBK | CB1234 pressure from the CB1234 boost valve supplied to the CB1234 clutch regulator valve to oppose movement of the valve from SSA SIG pressure during forward (1, 2, 3, 4) clutch application. |
| CB1234 SUP | CB26FD/CB1234FD pressure supplied to the CB1234 regulator valve downstream of the CB26FD/CB1234FD check ball. |
| CB26 | Regulated pressure supplied to the intermediate (2, 6) clutch in 2nd and 6th gears. |
| CB26FD/CB1234FD | DRIVE 2 or DRIVE B pressure directed to the CB26 and CB1234 regulator valves by the DRIVE 2/DRIVE B shuttle ball. |
| C35R | Regulated C35R SUPPLY pressure from the direct (3, 5, R) regulator valve that supplies the direct (3, 5, R) clutch. |
| C35R FDBK | C35R pressure from the C35R boost valve supplied to the C35R clutch regulator valve to oppose movement of the valve from SSB SIG pressure during direct (3, 5, R) clutch application. |
| C35R SUPPLY | DRIVE 2 or REV SUPPLY pressure directed to the 3, 5, R clutch regulator valve by the DRIVE 2/REV SUPPLY shuttle ball. |
| C456/C456 SUPPLY | Regulated clutch pressure from the low/reverse/overdrive (4, 5, 6) regulator valve directed to the overdrive (4, 5, 6) clutch in 4th, 5th, and 6th gears. |
| CBLR/C456 FDBK | CBLR/C456 SUPPLY pressure from the CBLR/C456 boost valve supplied to the CBLR/C456 regulator valve to oppose movement of the valve from SSD SIG pressure during low/reverse and overdrive (4, 5, 6) clutch application. |
| CBLR/C456 SUPPLY | Regulated pressure from the low/reverse/overdrive (4, 5, 6) regulator valve to the multiplex shift valve assembly. The multiplex shift valve directs it to the Overdrive (O/D) clutch or the low/reverse clutch, depending on what position it is in. |
| CBLR/CBLR SUPPLY | Regulated pressure from the low/reverse/overdrive (4, 5, 6) regulator valve directed to the low/reverse clutch by the multiplex shift valve in LOW and REVERSE. |
| COMP FEED | Compensator feed pressure applied to the back side of clutches to keep the clutches from centrifugally applying. |
| CONV FD | Pressure from the pressure regulator valve to the Torque Converter Clutch (TCC) control valve, which supplies the valve to apply and release the TCC . |
| COOLER FEED | Pressure supplied to the transmission fluid cooler from the TCC control valve and feeds the LUBE circuit. |
| DECREASE | Pressure from the pressure regulator valve to the pump that raises and lowers the line pressure. |
| DRIVE | 1 Line pressure directed to the multiplex shift valve by the manual valve in DRIVE and LOW. |
| DRIVE 2 | DRIVE 1 pressure from the multiplex shift valve to the TCC regulator apply valve, DRIVE 2/DRIVE B shuttle ball, DRIVE 2/REV SUPPLY shuttle ball and CBLR/C456 regulator valve. |
| DRIVE B | REV DRIVE B pressure directed to the DRIVE 2/DRIVE B shuttle ball by the multiplex manual valve. |
| EXH | Fluid exhausted from the valves that drains to the sump area. |
| EXH BF | Fills the forward (1, 2, 3, 4), intermediate (2, 6) and low/reverse/overdrive (4, 5, 6) regulator valves and the multiplex shift and manual valves with fluid (no pressure). |
| LINE | Line pressure from the pump to the manual valve, solenoid regulator valve, fluid temperature sensor, low/reverse/overdrive (4, 5, 6) regulator valve, COMP FEED circuit and EXH BF circuit. |
| LPC | Full or regulated pressure from the Line Pressure Control (LPC) solenoid to the pressure regulator valve. |
| REG APPLY | Regulated DRIVE 2 pressure from the TCC regulator apply valve supplied to the TCC control valve to apply the TCC . |
| REV DRIVE B | DRIVE 1 pressure directed to the multiplex manual valve by the multiplex shift valve. |
| REV/REV SUPPLY | Pressure supplied to the multiplex shift valve assembly and the direct (3, 5, R) clutch regulator valve from the manual valve in REVERSE only. |
| SOL FEED | Regulated pressure from the solenoid regulator valve that supplies the shift, TCC and LPC solenoids, multiplex manual valve and the direct (3, 5, R) clutch regulator valve. |
| SSA SIG | Pressure supplied to the forward (1, 2, 3, 4) clutch regulator and boost valves from Shift Solenoid A (SSA) to direct regulated pressure to the forward clutch in 1st, 2nd, 3rd or 4th gears. |
| SSB SIG | Pressure supplied to the direct (3, 5, R) clutch regulator and boost valves from Shift Solenoid B (SSB) to direct regulated pressure to the direct clutch in 3rd and 5th gears and REVERSE. |
| SSC SIG | Pressure supplied to the intermediate (2, 6) clutch regulator and boost valves from Shift Solenoid C (SSC) to direct regulated pressure to the intermediate clutch in 2nd and 6th gears. |
| SSD SIG | Pressure supplied to the low/reverse/overdrive (4, 5, 6) regulator and boost valves from Shift Solenoid D (SSD) to direct regulated pressure to the multiplex shift valve in LOW or REVERSE position or 4th, 5th and 6th gear. |
| SSE | Full solenoid pressure from Shift Solenoid E (SSE) to the TCC regulator valve and multiplex shift valve. |
| TCC APPLY | Pressure supplied to the torque converter from the TCC control valve to apply the TCC . |
| TCC RELEASE | Pressure supplied to the torque converter from the TCC control valve to release the TCC . |
| TCC SOL SIG | Full or regulated pressure from the TCC solenoid to the TCC regulator and control valves. |
| VALVE LATCH | Pressure supplied to the multiplex shift valve from the low/reverse/overdrive (4, 5, 6) regulator valve or the C456/C456 SUPPLY circuit to latch the valve. |