Nissan Altima 2007-2012 Service Manual: Shift position indicator circuit
Description
• TCM sends position indicator signals to combination meter by CAN communication line.
• Manual mode switch position is indicated on shift position indicator.
Component Function Check
1.CHECK SHIFT POSITION INDICATOR
CAUTION: Always drive vehicle at a safe speed.
1. Start engine.
2. Check if correct selector lever position (“P”, “N”, “R” or “D”) is displayed as selector lever is moved into each position.
3. Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when selector lever is shifted to the “UP (+ side)” or “DOWN (− side)” side (1st ⇔ 6th gear).
Is the inspection result normal? YES >> INSPECTION END
NO >> Go to TM-366, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK INPUT SIGNALS
1. Start engine.
2. Check if correct selector lever position (“P”, “N”, “R” or “D”) is displayed as selector lever is moved into each position.
3. Select “RANGE” on “DATA MONITOR” and read out the value.
4. Drive vehicle in the manual mode, and confirm that the actual gear position and the meter's indication of the position mutually coincide when selector lever is shifted to the “UP (+ side)” or “DOWN (− side)” side (1st ⇔ 6th gear).
Is the inspection result normal? YES >> INSPECTION END
NO-1 >> The actual gear position does not change, or shifting into the manual mode is not possible (no gear shifting in the manual mode possible). Or the shift position indicator is not indicated.
• Check manual mode switch. Refer to TM-340, "Component Inspection (Manual Mode Switch)".
• Check CVT main system (Fail-safe function actuated).
- Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
NO-2 >> The actual gear position changes, but the shift position indicator is not indicated.
• Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
NO-3 >> The actual gear position and the indication on the shift position indicator do not coincide.
• Perform “SELF-DIAG RESULTS” mode for “TRANSMISSION”.
NO-4 >> Only a specific position or positions is/are not indicated on the shift position indicator.
• Check combination meter. Refer to MWI-38, "CONSULT-III Function (METER/M&A)".
P1778 step motor - function
Description
• The step motor's 4 aspects of ON/OFF change according to the signal from
TCM. As a result, the flow of line
pressure to primary pulley is changed and pulley ratio is controlled.
...
Shift lock system
Description
The selector lever cannot be shifted from “P” position to any other position
unless the ignition switch is in the
ON position and the brake pedal is depressed.
Wiring Diagram - C ...
Other materials:
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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 potentiometers which tr ...
Air conditioner operation
Start the engine, turn the fan control dial to the
desired position, and press the
button to
activate the air conditioner. When the air conditioner
is on, cooling and dehumidifying functions
are added to the heater operation.
The air conditioner cooling function operates
only when the engin ...
P0740 torque converter clutch solenoid
valve
Description
• The torque converter clutch solenoid valve is activated by the TCM in
response to signals sent from the vehicle
speed and accelerator pedal position sensors. Lock-up piston operation will then
be controlled.
• Lock-up operation, however, is prohibited when CVT fluid tempe ...