Drive Range - Fifth Gear is used to maximize engine efficiency and fuel economy under most normal driving conditions. When operating conditions are appropriate, the transmission control module (TCM) de-energizes the 2-3, 3-4 shift solenoid valve assembly (S2) to shift the transmission into Fifth gear. The manual valve remains in the DRIVE (D) position and line (2) pressure continues to feed the drive (19) fluid circuit.

2-3, 3-4 Shift Solenoid (SS) Valve Assembly (S2)

The 2-3, 3-4 SS valve assembly is de-energized, allowing fluid pressure in the S2 signal (15) fluid circuit to exhaust through the solenoid.

M2 Shift Valve

When S2 signal (15) fluid exhausts, spring force shifts the M2 shift valve to the released position, allowing direct clutch feed 2 (28) fluid to pass through the valve into the direct clutch (29) fluid circuit.

#1 Accumulator Check Valve Assembly

Direct clutch (29) fluid pressure is routed to the #1 accumulator check valve assembly and moves the check valve against spring force in order to cushion the apply of the direct clutch.

Direct Clutch (C2) Assembly

Direct clutch (29) fluid is routed to the direct clutch piston to apply the direct clutch plates.

Second Coast Clutch (B1) Assembly

When the M2 shift valve shifts to the released position, second coast clutch (36) fluid exhausts through the valve allowing the second coast clutch to release.

At this time, the torque converter clutch remains released and TCC signal (13) fluid remains available at the lock up control valve in preparation for a possible torque converter clutch apply. When conditions are appropriate, the TCM ramps up the duty cycle of the lock up pressure control solenoid valve (SLU) to initiate the TCC apply. Refer to Drive Range Fifth Gear - Torque Converter Clutch Applied .

1. SUCTION
2. LINE
3. CONVERTER FEED
4. RELEASE
5. APPLY
6. EXHAUST ENABLE
7. COOLER
8. LUBE
9. SOLENOID MODULATOR
10. THROTTLE SIGNAL (SLT)
11. SHIFT CONTROL (SLS)
12. LOCK UP CONTROL (SLU)
13. TCC SIGNAL
14. S1 SIGNAL
15. S2 SIGNAL
16. S3 SIGNAL
17. S4 SIGNAL
18. S5 SIGNAL
19. DRIVE
20. DRIVE OR REVERSE
21. REGULATED DRIVE OR REVERSE
22. REVERSE
23. REVERSE CLUTCH
24. LOW AND REVERSE CLUTCH
25. REVERSE CONTROL
26. FORWARD CLUTCH
27. DIRECT CLUTCH FEED 1
28. DIRECT CLUTCH FEED 2
29. DIRECT CLUTCH
30. B2 CONTROL 1
31. B2 CONTROL 2
32. SECOND CLUTCH
33. B1 CONTROL 1
34. B1 CONTROL 2
35. B1 CONTROL 3
36. SECOND COAST CLUTCH
37. B5 CONTROL 1
38. B5 CONTROL 2
39. 1-2 REVERSE (B5) CLUTCH
40. 4-5 CLUTCH
41. B4 CONTROL
42. B4 RELEASE
43. SERVO RELEASE
44. SERVO FEED
45. SERVO APPLY
46. 3RD GEAR BAND APPLY
47. PN12345
48. PRN15
49. 234NCON
50. 345 ENABLE
51. 45 ENABLE
52. REVERSE INHIBIT
53. VENT
54. EXHAUST
55. SUMP
56. VOID
57. TORQUE CONVERTER SEAL DRAINBACK