Nissan Sentra manuals

Nissan Sentra Service Manual: ECU diagnosis information

TCM

Reference Value

CONSULT DATA MONITOR STANDARD VALUE

NOTE:





*: This monitor item does not use.


*: This monitor item does not use.

Terminal layout

Input/output signal standard


Input/output signal standard




Fail-Safe


Fail-Safe

Tcm has a fail-safe mode. The mode functions so that operation can be continued even if the signal circuit of the main electronically controlled input/output parts is damaged.

If the vehicle shows following behaviors including “poor acceleration”, a malfunction of the applicable system is detected by tcm and the vehicle may be in a fail-safe mode. At this time, check the dtc code and perform inspection and repair according to the malfunction diagnosis procedures.

Fail-safe function



Protection control


Protection control

The tcm becomes the protection control status temporarily to protect the safety when the safety of tcm and transmission is lost. It automatically returns to the normal status if the safety is secured.

The tcm has the following protection control.

CONTROL FOR WHEEL SPIN

Control When a wheel spin is detected, the engine output and gear ratio are limited and the line pressure is increased.

At the 1gr, the clutch pressure is increased.

Vehicle behavior in control If the accelerator is kept depressing during wheel spin, the engine revolution and vehicle speed are limited to a certain degree. From the 1gr, upshift to a certain gear ratio is only allowed.
Normal return condition Wheel spin convergence returns the control to the normal control.V

Control when fluid temperature is high

Control When the cvt fluid temperature is high, the gear shift permission maximum revolution and the maximum torque are reduced than usual to prevent increase of the oil temperature.
Vehicle behavior in control Power performance may be lowered, compared to normal control.
Normal return condition The control returns to the normal control when CVT fluid temperature is lowered.

Torque is reduced when driving with the reverse gear

Control Engine output is controlled according to a vehicle speed while reversing the vehicle.
Vehicle behavior in control Power performance may be lowered while reversing the vehicle.
Normal return condition Torque returns to normal by positioning the selector lever in a range other than “R” position.

Reverse prohibit control

Control The reverse brake is controlled to avoid becoming engaged when the selector lever is set in “r” position while driving in forward direction at more than the specified speed.
Vehicle behavior in control If the selector lever is put at “r” position when driving with the forward gear, the gear becomes neutral, not reverse.
Normal return condition The control returns to normal control when the vehicle is driven at low speeds. (The reverse brake becomes engaged.)

DTC Inspection Priority Chart

If multiple malfunction codes are detected at the same time, check each code according to the dtc check priority list below.


DTC Index


DTC Index

Note:


*1: These numbers are specified by sae j2012/iso 15031-6.


*1: These numbers are specified by sae j2012/iso 15031-6.

*2: The dtc number of the 1st trip is the same as the dtc number.

*3: Refer to tm-106, "diagnosis description : malfunction indicator lamp (mil)".

*4: Refer to tm-151, "description".

Diagnosis system (TCM)
DIAGNOSIS DESCRIPTION DIAGNOSIS DESCRIPTION : 1 Trip Detection Diagnosis and 2 Trip Detection Diagnosis NOTE: “Start the engine and turn OFF the ignition switch after warm-up.” This i ...

Wiring diagram
CVT Control system Wiring Diagram CVT Shift lock system Wiring Diagram ...

Other materials:

Precaution for Work
When removing or disassembling each component, be careful not to damage or deform it. If a component may be subject to interference, be sure to protect it with a shop cloth. When removing (disengaging) components with a screwdriver or similar tool, be sure to wrap the component with a ...

System features
NISSAN Voice Recognition can activate the following systems: Bluetooth™ Hands-Free Phone System Navigation Audio Information My Apps For additional information on the navigation system, see the separate Navigation System Owner’s Manual. How to say numbers NISSAN Voice Rec ...

Main line between dlc and hvac circuit
Diagnosis procedure 1.Check harness continuity (open circuit) Turn the ignition switch off. Disconnect the battery cable from the negative terminal. Disconnect the following harness connectors. Ecm A/C auto amp. Check the continuity between the data link connector and the A/C ...

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