Nissan Quest E52. Manual - part 1201

TM-34

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

ON BOARD DIAGNOSTIC (OBD) SYSTEM

ON BOARD DIAGNOSTIC (OBD) SYSTEM

Diagnosis Description

INFOID:0000000009650095

This system is an on board diagnostic system that records exhaust emission-related diagnostic information
and detects a sensors/actuator-related malfunction. A malfunction is indicated by the malfunction indicator
lamp (MIL) and stored in ECU memory as a DTC. The diagnostic information can be obtained with the diag-
nostic tool (GST: Generic Scan Tool).

GST (Generic Scan Tool)

INFOID:0000000009650096

When GST is connected with a data link connector equipped on the vehicle side, it will communicate with the
control unit equipped in the vehicle and then enable various kinds of diagnostic tests. Refer to

GI-50, "Descrip-

tion"

NOTE:
Service $0A is not applied for regions where it is not mandated.

DIAGNOSIS SYSTEM (TCM)

TM-35

< SYSTEM DESCRIPTION >

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DIAGNOSIS SYSTEM (TCM)

DIAGNOSIS DESCRIPTION

DIAGNOSIS DESCRIPTION : System Description

INFOID:0000000009650097

This is an on-board trouble diagnosis system which automatically detects malfunction. Detected malfunction is
memorized in TCM as DTC. Diagnosis information can be confirmed using CONSULT.

DIAGNOSIS DESCRIPTION : DTC

INFOID:0000000009650098

• DTC (P0703, P0710, P0840, etc.) is specified by SAE J2012/ISO 15031-6.
• TCM memorizes DTC when malfunction is detected. It can memorize plural DTCs.

DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)

INFOID:0000000009650099

• TCM not only detects DTC, but also sends the CVT self-diagnosis signal to ECM through CAN communica-

tion. ECM sends the malfunctioning indicator lamp signal to the combination meter through CAN communi-
cation according to the signal, and illuminates MIL.

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

EC-66, "DIAGNOSIS DESCRIPTION : Malfunction

Indicator Lamp (MIL)"

CONSULT Function

INFOID:0000000009650100

APPLICATION ITEMS

SELF DIAGNOSTIC RESULTS

Refer to

TM-48, "DTC Index"

How to Read DTC

DTC is displayed on “Self Diagnostic results” of CONSULT.
When DTC is currently detected, “CRNT” is displayed. If “PAST” is displayed, it shows a malfunction occurred
in the past.The trip number of drive without malfunction of concerned DTC can be confirmed with “IGN
counter” inside “FFD”.

How to Erase DTC

NOTE:
• If the battery terminal is disconnected, the TCM memory is erased. (The disconnection time varies from sev-

eral seconds to several hours.

• If the ignition switch is left ON after repair, turn OFF the ignition switch and wait for 10 seconds or more.

Then, turn the ignition ON again. (Engine stop)

Touch “TRANSMISSION” of CONSULT.

Touch “Self Diagnostic Result”.

Touch “Erase”. (DTC memorized in TCM is erased.)

IGN Counter

IGN counter is displayed in “FFD”. It displays the number of operations of ignition switch from OFF to ON after
DTC recovery to normal.
• If malfunction (DTC) is currently detected, “0” is displayed.
• The displayed number counts up at each operation of ignition switch from OFF to ON after recovery to nor-

mal, such as 1

→

3...38

→

39.

Mode

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 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.

TM-36

< SYSTEM DESCRIPTION >

[CVT: RE0F09B]

DIAGNOSIS SYSTEM (TCM)

• If the number of operation exceeds 39, the displayed number will be fixed at “39” until the self diagnosis

result is erased.

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.

Monitored item (Unit)

Remarks

VSP SENSOR

(km/h or mph)

Displays the vehicle speed calculated from the CVT output shaft speed.

ESTM VSP SIG

(km/h or mph)

Displays the vehicle speed signal received through CAN communication.

PRI SPEED SEN

(rpm)

Displays the primary pulley speed calculated from the pulse signal of the pri-
mary speed sensor.

ENG SPEED SIG

(rpm)

Displays the engine speed received through CAN communication.

SEC HYDR SEN

(V)

Displays the signal voltage of the secondary pressure sensor.

PRI HYDR SEN

(V)

Displays the signal voltage of the primary pressure sensor.

ATF TEMP SEN

(V)

Displays the signal voltage of the CVT fluid temperature sensor.

VIGN SEN

(V)

Displays the battery voltage applied to TCM.

VEHICLE SPEED

(km/h or mph)

Displays the vehicle speed recognized by TCM.

PRI SPEED

(rpm)

Displays the primary pulley speed recognized by TCM.

SEC SPEED

(rpm)

Displays the secondary pulley speed recognized by TCM.

ENG SPEED

(rpm)

Displays the engine speed recognized by TCM.

SLIP REV

(rpm)

Displays the speed difference between the input shaft speed of CVT and the
engine speed.

GEAR RATIO

Displays the pulley gear ratio calculated from primary pulley speed/second-
ary pulley speed.

G SPEED

(G)

Displays the acceleration and deceleration speed of the vehicle calculated
from vehicle speed change.

ACCEL POSI SEN 1

(0.0/8)

Displays the estimated throttle position received through CAN communica-
tion.

TRQ RTO

Display the torque ratio of torque converter.

SEC PRESS

(MPa)

Displays the secondary pressure calculated from the signal voltage of the
secondary pressure sensor.

PRI PRESS

(MPa)

Displays the primary pressure calculated from the signal voltage of the pri-
mary pressure sensor.

ATFTEMP COUNT

Means CVT fluid temperature. Actual oil temperature

C (

F) cannot be

checked unless a numeric value is converted. Refer to

TM-39, "ATFTEMP

COUNT Conversion Table"

DSR REV

(rpm)

Displays the target primary pulley speed calculated from processing of gear
shift control.

DGEAR RATIO

Displays the target gear ratio.

DSTM STEP

(step)

Displays the target number of steps of the step motor, calculated from pro-
cessing of gear shift control.

STM STEP

(step)

Displays the actual number of steps of the step motor, calculated from pro-
cessing of gear shift control.

LU PRS

(MPa)

Displays the target oil pressure of the torque converter clutch solenoid valve
calculated from oil pressure processing of gear shift control.

LINE PRS

(MPa)

Displays the target oil pressure of the line pressure solenoid valve calculated
from oil pressure processing of gear shift control.

TGT SEC PRESS

(MPa)

Displays the target oil pressure of the secondary pressure solenoid valve cal-
culated from oil pressure processing of gear shift control.

ISOLT1

(A)

Displays the command current from TCM to the torque converter clutch so-
lenoid valve.

DIAGNOSIS SYSTEM (TCM)

TM-37

< SYSTEM DESCRIPTION >

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ISOLT2

(A)

Displays the command current from TCM to the line pressure solenoid valve.

ISOLT3

(A)

Display the command current from TCM to the secondary pressure solenoid
valve.

SOLMON1

(A)

Monitors the command current from TCM to the torque converter clutch so-
lenoid valve and displays the monitored value.

SOLMON2

(A)

Monitors the command current from TCM to the line pressure solenoid valve
and displays the monitored value.

SOLMON3

(A)

Monitors the command current from TCM to the secondary pressure sole-
noid valve and displays the monitored value.

BRAKESW

Displays the reception status of the stop lamp switch signal received through
CAN communication.

FULL SW

• Displays the reception status of the wide open throttle position signal re-

ceived through CAN communication.

• It is displayed although not equipped.

IDLE SW

Displays the reception status of the closed throttle position signal received
through CAN communication.

SPORT MODE SW

Displays the reception status of the overdrive control switch signal received
through CAN communication.

STRDWNSW

• Displays the operation status of the paddle shifter (down switch).
• It is displayed although not equipped.

STRUPSW

• Displays the operation status of the paddle shifter (up switch).
• It is displayed although not equipped.

DOWNLVR

• Displays the operation status of the selector lever (down switch).
• It is displayed although not equipped.

UPLVR

• Displays the operation status of the selector lever (up switch).
• It is displayed although not equipped.

NONMMODE

• Displays if the selector lever position is not at the manual shift gate.
• It is displayed although not equipped.

MMODE

• Displays if the selector lever position is at the manual shift gate.
• It is displayed although not equipped.

INDLRNG

Displays the transmission status of the shift position (“L” position) signal
transmitted through CAN communication.

INDDRNG

Displays the transmission status of the shift position (“D” position) signal
transmitted through CAN communication.

INDNRNG

Displays the transmission status of the shift position (“N” position) signal
transmitted through CAN communication.

INDRRNG

Displays the transmission status of the shift position (“R” position) signal
transmitted through CAN communication.

INDPRNG

Displays the transmission status of the shift position (“P” position) signal
transmitted through CAN communication.

CVT LAMP

• Displays the transmission status of the CVT indicator signal transmitted

through CAN communication.

• It is displayed although not equipped.

SPORT MODE IND

Displays the transmission status of the O/D OFF indicator signal transmitted
through CAN communication.

MMODE IND

• Displays the transmission status of the manual mode signal transmitted

through CAN communication.

• It is displayed although not equipped.

SMCOIL D

Displays the energizing status of step motor coil “D”.

SMCOIL C

Displays the energizing status of step motor coil “C”.

SMCOIL B

Displays the energizing status of step motor coil “B”.

SMCOIL A

Displays the energizing status of step motor coil “A”.

Monitored item (Unit)

Remarks

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