AT-42
[RE4F04B]
OVERALL SYSTEM
Revision: November 2006
2006 Altima
Overrun Clutch Solenoid Valve Control
The overrun clutch solenoid valve is operated by an ON-OFF signal
transmitted by the TCM to provide overrun clutch control (engine
brake control).
When this solenoid valve is ON, the pilot pressure drain port closes.
When it is OFF, the drain port opens.
During the solenoid valve ON pilot pressure is applied to the end
face of the overrun clutch control valve.
Overrun Clutch Control Valve Operation
When the solenoid valve is ON, pilot pressure is applied to the over-
run clutch control valve. This pushes up the overrun clutch control
valve. The line pressure is then shut off so that the clutch does not
engage.
When the solenoid valve is OFF, pilot pressure is not generated. At
this point, the overrun clutch control valve moves downward by
spring force. As a result, overrun clutch operation pressure is pro-
vided by the overrun clutch reducing valve. This causes the overrun
clutch to engage.
In the 1 position, the overrun clutch control valve remains pushed
down so that the overrun clutch is engaged at all times.
Control Valve
ECS0095Y
FUNCTION OF CONTROL VALVES
SAT015J
SAT016J
Valve name
Function
Pressure regulator valve, plug and sleeve
plug
Regulates oil discharged from the oil pump to provide optimum line pressure for all driv-
ing conditions.
Pressure modifier valve and sleeve
Used as a signal supplementary valve to the pressure regulator valve. Regulates pres-
sure-modifier pressure (signal pressure) which controls optimum line pressure for all
driving conditions.
Pilot valve
Regulates line pressure to maintain a constant pilot pressure level which controls lock-up
mechanism, overrun clutch, shift timing.
Accumulator control valve
Regulates accumulator back-pressure to pressure suited to driving conditions.
Manual valve
Directs line pressure to oil circuits corresponding to select positions.
Hydraulic pressure drains when the shift lever is in Neutral.
Shift valve A
Simultaneously switches three oil circuits using output pressure of shift solenoid valve A
to meet driving conditions (vehicle speed, throttle opening, etc.).
Provides automatic downshifting and up-shifting (1st
→
2nd
→
3rd
→
4th gears/4th
→
3rd
→
2nd
→
1st gears) in combination with shift valve B.
Содержание RE4F04B
Страница 24: ...AT 24 RE4F04B OVERALL SYSTEM Revision November 2006 2006 Altima Circuit Diagram ECS0095S BCWA0481E...
Страница 26: ...AT 26 RE4F04B OVERALL SYSTEM Revision November 2006 2006 Altima Hydraulic Control Circuit ECS0095U LCIA0040E...
Страница 215: ...TROUBLE DIAGNOSIS FOR SYMPTOMS AT 215 RE4F04B D E F G H I J K L M A B AT Revision November 2006 2006 Altima BCWA0473E...
Страница 278: ...AT 278 RE4F04B OVERHAUL Revision November 2006 2006 Altima OVERHAUL PFP 00000 Components ECS009AX WCIA0320E...
Страница 279: ...OVERHAUL AT 279 RE4F04B D E F G H I J K L M A B AT Revision November 2006 2006 Altima WCIA0370E...
Страница 280: ...AT 280 RE4F04B OVERHAUL Revision November 2006 2006 Altima WCIA0708E...
Страница 281: ...OVERHAUL AT 281 RE4F04B D E F G H I J K L M A B AT Revision November 2006 2006 Altima Oil Channel ECS009AY SAT573K...
Страница 440: ...AT 440 RE5F22A TROUBLE DIAGNOSIS Revision November 2006 2006 Altima Circuit Diagram ECS009CZ BCWA0475E...
Страница 509: ...DTC P0732 A T 2ND GEAR FUNCTION AT 509 RE5F22A D E F G H I J K L M A B AT Revision November 2006 2006 Altima WCWA0195E...
Страница 515: ...DTC P0733 A T 3RD GEAR FUNCTION AT 515 RE5F22A D E F G H I J K L M A B AT Revision November 2006 2006 Altima WCWA0197E...
Страница 526: ...AT 526 RE5F22A DTC P0735 A T 5TH GEAR FUNCTION Revision November 2006 2006 Altima WCWA0224E...
Страница 574: ...AT 574 RE5F22A DTC P0780 SHIFT Revision November 2006 2006 Altima WCWA0211E...
Страница 622: ...AT 622 RE5F22A A T SHIFT LOCK SYSTEM Revision November 2006 2006 Altima Wiring Diagram AT SHIFT ECS009J6 WCWA0186E...
Страница 634: ...AT 634 RE5F22A OVERHAUL Revision November 2006 2006 Altima OVERHAUL PFP 00000 Components ECS009JL WCIA0334E...