Manual Second Gear (With Touch Activated Power)
Manual Second Gear (With Touch Activated Power)
When the gear selector lever is moved to the Manual gear range, the manual valve moves and allows line pressure to enter the Braking fluid passage. The transmission reacts by shifting immediately into second gear range and is prevented from upshifting into either Third or Fourth gear.
Manual Valve (404)
Is moved by the gear selector lever allowing line pressure to enter the braking passage.
Number 8 Ball Check Valve (372)
Located in the control valve body (300), is fed braking fluid from the manual valve (404) and directs it to the 2-3 shift valve (357).
2-3 Shift Valve (357)
When shifted by braking fluid, it allows 3rd fluid to exhaust.
3-2 Manual Downshift Valve (356)
Is shifted by 2-3 signal fluid and prevents the 2-3 shift valve (357) from upshifting. It also allows braking fluid to enter the manual 2-1 servo feed passage to stroke the manual 2-1 servo assembly (104-115)
Manual 2-1 Servo Assembly (104-115)
Applies the manual 2-1 band (680) during manual second and manual first gear ranges.
Number 4 Ball Check Valve (372)
Located in the case cover (400), it directs 3rd clutch/lo-reg exhaust fluid into the 3rd clutch passage, releasing the 3rd clutch.
2-3 Shift Solenoid (SS) Valve (315)
When energized, it allows line pressure to enter the 2-3 signal fluid passage and sends it to the 4-3 manual downshift valve (360) and 3-2 manual downshift valve (356).
Pressure Control (PC) Solenoid
The PCM increases the PC solenoid duty cycle to increase the operating range of torque signal fluid pressure in Manual Second. This provides increased line pressure for the additional torque requirements during engine compression braking and increased engine load in Manual Second.
Torque Converter Clutch
The PCM will release the TCC before downshifting into Manual Second. The TCC will not re-apply in Second gear under normal operating conditions.
Drive Range, Manual 2nd - from Drive, Manual 3rd - With Touch Activated Power
Drive Range, Manual 2nd - from Drive, Manual 3rd - With Touch Activated Power:
