Nissan Altima 2007-2012 Service Manual: Control system

System Diagram

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.

CONTROL SYSTEM OUTLINE

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.

INPUT/OUTPUT SIGNAL OF TCM

*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 (Manual mode select switch and manual mode position select switch)

2. Accelerator pedal position (APP) sensor

3. Secondary speed sensor

4. CVT unit harness connector

5. TCM

6. Battery

7. Shift position indicator Manual mode indicator

Component Parts Location - Sedan

1. Control device assembly (Manual mode select switch and manual mode position select switch)

2. Accelerator pedal position (APP) sensor

3. Secondary speed sensor

4. CVT unit harness connector

5. TCM

6. Battery

7. Shift position indicator Manual mode indicator

Component Description

TRANSAXLE ASSEMBLY

EXCEPT TRANSAXLE ASSEMBLY

    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 transmissi ...

    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:

    Engine control system
    System Diagram System Description ECM performs various controls such as fuel injection control and ignition timing control. Component Parts Location 1. Intake valve timing control solenoid valve 2. Ignition coil (with power transistor) and spark plug 3. Knock sensor, Crankshaft posi ...

    Headlight control switch
    Lighting 1 When turning the switch to the position, the front parking, tail, license plate and instrument panel lights come on. 2 When turning the switch to the position, the headlights come on and all the other lights remain on. CAUTION Use the headlights with the engine running to a ...

    Turn signal and hazard warning lamps
    System Diagram System Description • BCM (Body Control Module) controls turn signal lamp (RH and LH) and hazard warning lamp operation. • Combination meter operates turn (RH and LH) indicator according to CAN communication signals from BCM. Component Parts Location 1. BCM M16, M ...