Nissan Sentra manuals

Nissan Sentra Service Manual: 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 is defined as 1 trip.

  1. TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC. In these diagnoses, some illuminate MIL and some do not. Refer to TM-126, "DTC Index".

  1. TRIP DETECTION DIAGNOSIS

When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1 trip> If the same malfunction is detected again in next driving, TCM memorizes DTC. When DTC is memorized, MIL lights. <2 trip> “Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.

DIAGNOSIS DESCRIPTION : DTC and DTC of 1st Trip


DIAGNOSIS DESCRIPTION : DTC and DTC of 1st Trip

  1. TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

DIAGNOSIS DESCRIPTION : Counter System

RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL)

COUNTER SYSTEM LIST

DRIVING CONDITION


DRIVING CONDITION

Driving pattern A

Driving pattern A is the driving condition that provides warm-up.

In specific, count-up is performed when all of the following conditions are satisfied.

NOTE:

Driving pattern B

Driving pattern B is the driving condition that performs all diagnoses once.

In specific, count-up is performed when all of the following conditions are satisfied.

NOTE:

TIME CHART

CONSULT Function


CONSULT Function

APPLICABLE ITEM

Conditions

Function

All DTC Reading Display all DTCs or diagnostic items that all ECUs are recording and judging.
Work Support This mode enables a technician to adjust some devices faster and more accurately.
Self Diagnostic Results Retrieve DTC from ECU and display diagnostic items.
Data Monitor Monitor the input/output signal of the control unit in real time.
CAN Diagnosis This mode displays a network diagnosis result about CAN by a diagram.
CAN Diagnosis Support Monitor It monitors the status of CAN communication.
ECU Identification Display the ECU identification number (part number etc.) of the selected system.
CALIB DATA The calibration data status of TCM can be checked.

SELF DIAGNOSTIC RESULTS

Refer to TM-126, "DTC Index".

DTC at 1st trip and method to read DTC

DTC deletion method

NOTE:

  1. Touch “TRANSMISSION” of CONSULT.
  2. Touch “Self Diagnostic Result”.
  3. Touch “Erase”. (DTC memorized in TCM is erased.)

IGN counter

The ignition counter is displayed in “FFD” and the number of times of satisfied “Driving pattern A” is displayed after normal recovery of DTC. Refer to TM-106, "DIAGNOSIS DESCRIPTION : Counter System".

NOTE:

The counter display of “40” cannot be checked.

Data monitor

NOTE:

The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items.





WORK SUPPORT


WORK SUPPORT

Item name

Description

ENGINE BRAKE ADJ. Although there is no malfunction on the transaxle and the CVT system, if a customer make a complaint like “I do not feel comfortable with automatic operation of the engine brake on downhill”, the engine brake may be cancelled with “engine brake adjustment”.
CONFORM CVTF DETERIORTN Check the degradation level of the CVT fluid under severe conditions.
G SENSOR CALIBRATION Compensate the G sensor.
ERASE CALIBRATION DATA Erase the calibration data memorized by TCM.
ERASE LEARNING VALUE Erase the learning value memorized by TCM.
ERASE MEMORY DATA Perform “erasing of the calibration data” and “erasing of the learned value” at the same time.

Engine brake adjustment

ENGINE BRAKE LEVEL

ON : Turn ON the engine brake control.

OFF : Turn OFF the engine brake control.

Check the degradation level of the CVT fluid.

CVTF degradation level data

210,000 or more : Replacement of the CVT fluid is required.

Less than 210,000 : Replacement of the CVT fluid is not required.

System
CVT CONTROL SYSTEM CVT CONTROL SYSTEM : System Diagram CVT CONTROL SYSTEM : System Description DESCRIPTION CVT detects the vehicle driving status from switches, sensors and signals, a ...

ECU diagnosis information
TCM Reference Value CONSULT DATA MONITOR STANDARD VALUE NOTE: The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this veh ...

Other materials:

Intake manifold tuning system
INTAKE MANIFOLD TUNING SYSTEM : System Description SYSTEM DIAGRAM SYSTEM DESCRIPTION This system switches the length of intake air path according to the low-to-medium speed range or high speed range. Torque is increased in the low-to-medium speed range and the engine output is improved ...

Symptom diagnosis
The eco mode indicator lamp does not turn on Description The ECO mode indicator lamp does not turn ON when the ECO mode switch is operated. Diagnosis Procedure 1.Perform combination meter on board diagnosis Perform combination meter on board diagnosis. Refer to MWI-16, "Description" ...

Sunglasses holder
To open the sunglasses holder, push and release. Only store one pair of sunglasses in the holder. WARNINGKeep the sunglasses holder closed while driving to prevent an accident. CAUTION Do not use for anything other than sunglasses. Do not leave sunglasses in the sungl ...

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