Nissan Altima 2007-2012 Service Manual: Control system

System Diagram

System Description


System Description

The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift position and reduces shifting and lock-up shocks.

TCM FUNCTION

The function of the TCM is to: • Receive input signals sent from various switches and sensors.

• Determine required line pressure, shifting point, and lock-up operation.

• Send required output signals to the step motor and the respective solenoids.

*: Without manual mode.


*: Without manual mode.

INPUT/OUTPUT SIGNAL OF TCM

*1: Input by CAN communications.


*1: Input by CAN communications.

*2: If these input and output signals are different, the TCM triggers the fail-safe function.

Component Parts Location - Coupe

1. Control device assembly


1. Control device assembly

2. Accelerator pedal position sensor

3. CVT unit harness connector

4. Primary speed sensor

5. Secondary speed sensor

6. PNP switch

7. TCM

8. Battery

9. Shift position indicator Manual mode indicator

Component Parts Location - Sedan

1. Control device assembly


1. Control device assembly

2. Accelerator pedal position sensor

3. CVT unit harness connector

4. Primary speed sensor

5. Secondary speed sensor

6. PNP switch

7. TCM

8. Battery

9. Shift position indicator Manual mode indicator

Component Description

TRANSAXLE ASSEMBLY

EXCEPT TRANSAXLE ASSEMBLY


EXCEPT TRANSAXLE ASSEMBLY

Lock-up and select control system


    Hydraulic control system
    System Diagram System Description The hydraulic control mechanism consists of the oil pump directly driven by the engine, the hydraulic control valve that controls line pressure and transmiss ...

    Lock-up and select control system
    System Diagram System Description • The torque converter clutch piston in the torque converter is engaged to eliminate torque converter slip to increase power transmission efficiency. ...

    Other materials:

    Precautions in repairing high strength steel
    High Strength Steel (HSS) High strength steel is used for body panels in order to reduce vehicle weight. Accordingly, precautions in repairing automotive bodies made of high strength steel are described below: SP130 is the most commonly used HSS. Read the following precautions when re ...

    Monitor, climate, audio, phone and voice recognition systems
    WARNING ● Positioning of the heating or air conditioning controls and display controls should not be done while driving in order that full attention may be given to the driving operation. ● Do not disassemble or modify this system. If you do, it may result in accidents, fire, o ...

    B2192, P1611 ID discord, immu-ECM
    Description BCM performs the ID verification with ECM that allows the engine to start. Start the engine if the ID is OK. ECM prevents the engine from starting if the ID is not registered. BCM starts the communication with ECM if ignition switch is turned ON. DTC Logic DTC DETECTION LOGIC ...