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:
P2014 tumble control valve position
sensor
Description
Tumble control valve position sensor is built into the tumble control
valve actuator (2).
1 : Intake manifold adapter
3 : Tumble control valve
The sensor consists of a permanent magnet and Hall IC. It senses
the valve shaft movement and feeds the voltage signals to the ECM.
DTC ...
P2122, P2123 APP Sensor
Description
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelerator
position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometer which tran ...
Disassembly and assembly
CENTER CONSOLE ASSEMBLY
Exploded View
1. M/T finisher
2. CVT finisher
3. Storage bin (if equipped)
4. CD changer console bracket (if
equipped)
5. CD changer bracket LH (if
equipped)
6. CD changer bracket RH (if
equipped)
7. CD changer finisher (if equipped)
8. Console
9. Console scre ...