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Nissan Sentra. Manual - part 867

TM-104

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

SYSTEM

Idle Neutral Control Resume Condition

When the idle neutral control finishes, if the vehicle is driven at more than the specified speed and the idle

neutral control start conditions are satisfied, the idle neutral control starts again. If the vehicle has a malfunc-

tion, the idle neutral control does not start.

ECO MODE CONTROL
ECO MODE CONTROL : System Description

INFOID:0000000009759354

• Driving mode that selects the shift schedule with priority on fuel economy which gives low engine revolution.

• The gear shift line is not changed with the control mode change for the following conditions:

- When the selector lever is at “L” position.

- When the selector lever is at D position and overdrive is OFF.

• For details on ECO mode control, refer to

DMS-26, "ECO MODE CONTROL : System Description"

FAIL-SAFE

If a malfunction occurs in the system of CVT during ECO mode, the ECO mode indicator lamp turns OFF and

the control switches to the normal mode control.

SPORT MODE CONTROL
SPORT MODE CONTROL : System Description

INFOID:0000000009759355

• Driving mode that keeps high engine revolution and provides direct feel and acceleration performance suit-

able for driving on winding road.

• The gear shift line is not changed with the control mode change for the following conditions:

- When the selector lever is at “L” position.

- When the selector lever is at D position and overdrive is OFF.

• For details on SPORT mode control, refer to

DMS-63, "SPORT MODE CONTROL : System Description"

FAIL-SAFE

If a malfunction occurs in the system of CVT during SPORT mode, the SPORT mode indicator lamp turns OFF

and the control switches to the normal mode control.

ON BOARD DIAGNOSTIC (OBD) SYSTEM

TM-105

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Description

INFOID:0000000009759356

This is an onboard diagnosis system which records diagnosis information related to the exhaust gases. It

detects malfunctions related to sensors and actuators. The malfunctions are indicated by means of the mal-

function indicator lamp (MIL) and are stored as DTC in the ECU memory. The diagnosis information can be

checked using a diagnosis tool (GST: Generic Scan Tool).

Function of OBD

INFOID:0000000009759357

The GST is connected to the diagnosis connector on the vehicle and communicates with the on-board control

units to perform diagnosis. The diagnosis connector is the same as for CONSULT. Refer to

GI-47, "Descrip-

tion"

TM-106

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : 1 Trip Detection Diagnosis and 2 Trip Detection Diagno-
sis

INFOID:0000000009759358

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"

2 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.

×: Check possible —: Check not possible

DIAGNOSIS DESCRIPTION : DTC and DTC of 1st Trip

INFOID:0000000009759359

2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL

• The DTC number of the 1st trip is the same as the DTC number.

• When a malfunction is detected at the 1st trip, TCM memorizes DTC of the 1st trip. MIL does not light at this

stage. If the same malfunction is not detected at the 2nd trip (conforming to necessary driving conditions),

DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes

DTC and MIL lights at the same time.

• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the

1st trip does not illuminate MIL, warning for a problem is not given to a driver.

• For procedure to delete DTC and 1st trip DTC from TCM, refer to

TM-108, "CONSULT Function"

• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer

TM-139, "Work Flow"

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

INFOID:0000000009759360

• TCM not only detects DTC, but also sends the MIL signal to ECM through CAN communication. ECM sends

the MIL signal to the combination meter through CAN communication according to the signal, and illumi-

nates MIL.

• For malfunction indicator lamp (MIL) description, refer to

EC-63, "DIAGNOSIS DESCRIPTION : Malfunction

Indicator Lamp (MIL)"

DIAGNOSIS DESCRIPTION : Counter System

INFOID:0000000009759361

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

• When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.

• If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.

• Then, MIL goes after driving the vehicle for 3 trips under “Driving condition B” without malfunction.

• DTC is displayed until 40 trips of “Driving condition A” are satisfied without detecting the same malfunction.

DTC is erased when 40 trips are satisfied.

Item

DTC at the 1st trip

DTC

MIL

Display at the

1st trip

Display at the

2nd trip

Display at the

1st trip

Display at the

2nd trip

Illumination at

the 1st trip

Illumination at

the 2nd trip

1 trip detection diagnosis
(Refer to

TM-126, "DTC Index"

)

—

2 trip detection diagnosis
(Refer to

TM-126, "DTC Index"

)

—

DIAGNOSIS SYSTEM (TCM)

TM-107

< SYSTEM DESCRIPTION >

[CVT: RE0F11A]

• When the self-diagnosis result is acceptable at the 2nd trip (conforming to driving condition B), DTC of the

1st trip is erased.

COUNTER SYSTEM LIST

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.

• Engine speed is 400 rpm or more.

• After start of the engine, the water temperature increased by 20

°C (36°F) or more.

• Water temperature was 70

°C (158°F) or more.

• The ignition switch was changed from ON to OFF.

NOTE:

• If the same malfunction is detected regardless of the driving condition, reset the A counter.

• When the above is satisfied without detecting the same malfunction, count up the A counter.

• When MIL goes off due to the malfunction and the A counter reaches 40, the DTC is erased.

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.

• Engine speed is 400 rpm or more.

• Water temperature was 70

°C (158°F) or more.

• In closed loop control, vehicle speed of 70 – 120 km/h (43 – 75 MPH) continued for 60 seconds or more.

• In closed loop control, vehicle speed of 30 – 60 km/h (19 – 37 MPH) continued for 10 seconds or more.

• In closed loop control, vehicle speed of 4 km/h (2 MPH) or less and idle determination ON continued for 12

seconds or more.

• After start of the engine, 22 minutes or more have passed.

• The condition that the vehicle speed is 10km/h (6 MPH) or more continued for 10 seconds or more in total.

• The ignition switch was changed from ON to OFF.

NOTE:

• If the same malfunction is detected regardless of the driving condition, reset the B counter.

• When the above is satisfied without detecting the same malfunction, count up the B counter.

• When the B counter reaches 3 without malfunction, MIL goes off.

• When the B counter is counted once without detecting the same malfunction after TCM memorizes DTC of

the 1st trip, DTC of the 1st trip is erased.

Item

Driving pattern

Trip

MIL (OFF)

DTC (clear)

DTC at 1st trip (clear)

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