1999 NISSAN PRIMERA sport mode

IWhen connecting or disconnecting pin connectors into or
from TCM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on TCM
pin terminal, when connecting pin connectors.
IBefore replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions prop-
erly or not. (See page AT-41.)
IAfter performing each TROUBLE DIAGNOSIS, perform
ªDTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DUREº.
The DTC should not be displayed in the ªDTC CONFIRMA-
TION PROCEDUREº if the repair is completed.
IIt is very important to perform functional tests whenever they
are indicated.
IExtreme care should be taken to avoid damage to O-rings,
seals and gaskets when assembling.
IWhen the CVT drain plug is removed, only some of the fluid is
drained. Old CVT fluid will remain in torque converter and CVT
fluid cooling system.
Always follow the procedures under ªChanging CVT Fluidº in
the MA section when changing CVT fluid.
Service Notice or PrecautionsNCAT0004FAIL-SAFENCAT0004S01The TCM has an electronic Fail-Safe (limp home mode). This allows the vehicle to be driven even if a major
electrical input/output device circuit is damaged.
Under Fail-Safe, the vehicle always runs even with a shift lever position of ªLº or ªDº. The customer may com-
plain of sluggish or poor acceleration.
When the ignition key is turned ªONº following Fail-Safe operation, CVT or SPORT indicator lamp blinks for
about 8 seconds. [For ªTCM SELF-DIAGNOSTIC PROCEDURE (No Tools)º, refer to AT-25.]
Fail-Safe may occur without electrical circuit damage if the vehicle is driven under extreme conditions (such
as excessive wheel spin followed by sudden braking). To recover normal shift pattern, turn the ignition key
ªOFFº for 5 seconds, then ªONº.
SEF291H
MEF040DA Perform TCM
input/output signal
inspection before
replacement.
SAT652J
PRECAUTIONS
Precautions (Cont'd)
AT-6

CVT Electrical Parts LocationNCAT0008
SAT671J Front
TCMIndicator C/USteering column
Throttle position sensor and
throttle position switch
SPORT indicator lamp
CVT indicator lamp
Manual mode switch SPORT mode switch
Dropping
resistor
Primary speed sensor Fluid temperature sensor
Fluid pressure sensor
Lock-up solenoid
Line pressure solenoid
Step motorInside control valveControl valve connectorPNP switchSecondary speed sensor
OVERALL SYSTEM
CVT Electrical Parts Location
AT-9

Control System=NCAT0014OUTLINENCAT0014S01The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
SENSORS
ETCM
EACTUATORS
PNP switch
Throttle position sensor
Closed throttle position switch
Wide open throttle position switch
Engine speed signal
CVT fluid temperature sensor
CVT fluid pressure sensor
Primary speed sensor
Secondary speed sensor
Stop lamp switch
Sport mode switch (Hyper CVT
only)
Indicator control unit (Hyper CVT
M6 only)
ABS control unitShift control
Line pressure control
Lock-up control
Fail-safe control
Self-diagnosis
CONSULT-II communication line
control
Duet-EU control
On board diagnosisStep motor
CVT indicator (warning) lamp
(Hyper CVT M6 only)
Torque converter clutch
solenoid valve
Line pressure solenoid valve
SPORT indicator lamp (Hyper
CVT only)
OVERALL SYSTEM
Control System
AT-12

CONTROL SYSTEMNCAT0014S02
NAT310 WheelDifferential
gearFinal gearBelt and
PulleyForward and
reverse
changeTorque
converterEngine Transaxle
Oil pump
Oil pressure control Parking
system
Control device
Sport mode SW or
manual mode SWElectrical control
Control valve
Primary pulley
speed and
secondary pulley
speed sensor
CVT indicator
(warning) lamp or
SPORT indicator lamp [Hyper CVT-M6]
Position
indicator
Indicator C/U
TCM
Mechanical system
Oil system
Electrical system
Stop lamp SWABS C/UECMThrottle
opening
sensor Engine speed sensor
PNP switch
OVERALL SYSTEM
Control System (Cont'd)
AT-13

TCM FUNCTION=NCAT0014S03The function of the TCM is to:
IReceive input signals sent from various switches and sensors.
IDetermine required line pressure, shifting point and lock-up operation.
ISend required output signals to the step motor and the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCMNCAT0014S04
Sensors and actuators Function
InputPNP switch Detects select lever position and sends a signal to TCM.
Throttle position sensor Detects throttle valve position and sends a signal to TCM.
Closed throttle position switch Detects throttle valve's fully-closed position and sends a signal to TCM.
Wide open throttle position switchDetects a throttle valve position of greater than 1/2 of full throttle and
sends a signal to TCM.
Engine speed signal From ECM.
CVT fluid temperature sensor Detects transmission fluid temperature and sends a signal to TCM.
CVT fluid pressure sensor Detects transmission fluid pressure and sends a signal to TCM.
Primary speed sensor Detects primary pulley rpm and sends a signal to TCM.
Secondary speed sensor Detects secondary pulley rpm and sends a signal to TCM.
Stop lamp switchSends a signal to the TCM relaying the operation condition of the brake
pedal.
Sport mode switchSends a signal to the TCM relaying the operation condition of the sport
mode switch.
Indicator control unit*1Sends a signal to the TCM operation condition of the manual mode switch
in control device.
ABS control unit Sends a signal to the TCM operation condition of the ABS.
OutputStep motor Regulates pulley position in relation to a signal sent from TCM.
Line pressure solenoid valveRegulates (or decreases) line pressure suited to driving conditions in rela-
tion to a signal sent from TCM.
Torque converter clutch solenoid
valveRegulates (or decreases) lock-up pressure suited to driving conditions in
relation to a signal sent from TCM.
CVT indicator (warning) lamp*2 Shows TCM faults, when CVT control components malfunction.
SPORT indicator lamp*3 Shows the operation condition of the SPORT mode switch. *3
Indicator control unit *1Receives the information of gear position on manual mode from TCM, and
sends a signal to indicator.
*1: Hyper CVT M6 models only
*2: Hyper CVT M6 models
*3: Hyper CVT models
OVERALL SYSTEM
Control System (Cont'd)
AT-14

IntroductionNCAT0017The CVT system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (OBD) performed by the TCM in combination with
the ECM. The malfunction is indicated by the MI (malfunction indicator) and is stored as a DTC in the ECM
memory but not the TCM memory.
The second is the TCM original self-diagnosis indicated by the CVT indicator (warning) lamp or SPORT indi-
cator lamp. The malfunction is stored in the TCM memory. The detected items are overlapped with OBD self-
diagnostic items. For detail, refer to AT-26.
OBD Function for CVT SystemNCAT0018The ECM provides emission-related on board diagnostic (OBD) functions for the CVT system. One function
is to receive a signal from the TCM used with OBD-related parts of the CVT system. The signal is sent to the
ECM when a malfunction occurs in the corresponding OBD-related part. The other function is to indicate a
diagnostic result by means of the MI (malfunction indicator) on the instrument panel. Sensors, switches and
solenoid valves are used as sensing elements.
The MI automatically illuminates in Two Trip Detection Logic when a malfunction is sensed in relation to CVT
system parts.
OBD Diagnostic Trouble Code (DTC)NCAT0020HOW TO READ DTC AND 1ST TRIP DTCNCAT0020S01DTC and 1st trip DTC can be read by the following methods.
1.(
No Tools)The number of blinks of the malfunction indicator in the Diagnostic Test Mode II (Self-Di-
agnostic Results) Examples: 0705, 0710, 0715, 0720, etc. For details, refer to EC section [ªMalfunction
Indicator (MI)º, ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº].
These DTCs are controlled by NISSAN.
2.(
with CONSULT-II orGST)CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710,
P0720, P0725, etc.
These DTCs are prescribed by ISO15031-6.
(CONSULT-II also displays the malfunctioning component or system.)
I1st trip DTC No. is the same as DTC No.
IOutput of the diagnostic trouble code indicates that the indicated circuit has a malfunction.
However, in case of the Mode II and GST they do not indicate whether the malfunction is still
occurring or occurred in the past and returned to normal.
CONSULT-II can identify them as shown below. Therefore, using CONSULT-II (if available) is rec-
ommended.
A sample of CONSULT-II display for DTC is shown at left. DTC or 1st trip DTC of a malfunction is displayed
in SELF-DIAGNOSTIC RESULTS mode for ªENGINEº with CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
If the DTC is being detected currently, the time data will be ª0º.
SAT651J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Introduction
AT-15

SELF-DIAGNOSTIC PROCEDURE
(WITH CONSULT-II)
NCAT0022S021. Turn on CONSULT-II and touch ªENGINEº for OBD detected
items or touch ªCVTº for TCM self-diagnosis.
If CVT is not displayed, check TCM power supply and ground
circuit. Refer to AT-41. If result is NG, refer to EL section
(ªPOWER SUPPLY ROUTINGº).
2. Touch ªSELF DIAGNOSISº.
Display shows malfunction experienced since the last erasing
operation.
CONSULT-II performs REAL-TIME SELF-DIAGNOSIS.
Also, any malfunction detected while in this mode will be dis-
played at real time.
SELF-DIAGNOSTIC RESULT TEST MODENCAT0022S03
Detected items
(Screen terms for CONSULT-II, ªSELF
DIAGNOSISº test mode)
Malfunction is detected when ...TCM self-diagnosis OBD (DTC)
Available by
CVT or SPORT
indicator lamp
ªCVTº on CON-
SULT-IIAvailable by
malfunction
indicator lamp*2,
ªENGINEº on CON-
SULT-II or GST ªCVTº ªENGINEº
PNP switch circuitITCM does not receive the correct volt-
age signal (based on the gear posi-
tion) from the switch.Ð P0705
PNP SW/CIRCUITPNP SW/CIRC
Primary speed sensorITCM does not receive the proper volt-
age signal from the sensor.
X P0715
I/P PULLY SPD SIGPRI SPEED SIG/
CIRC
Secondary speed sensorITCM does not receive the proper volt-
age signal from the sensor.
X P0720
VEHICLE SPEED
SIGVEH SPD SEN/CIR
A/T
T/C clutch solenoid valveITCM detects an improper voltage drop
when it tries to operate the solenoid
valve.X P0740
T/C CLUTCH
SOL/VTCC SOLENOID/
CIRC
Line pressure solenoid valveITCM detects an improper voltage drop
when it tries to operate the solenoid
valve.X P0745
LINE PRESSURE
S/VL/PRESS SOL/
CIRC
Throttle position sensor,
Throttle position switchITCM receives an excessively low or
high voltage from the sensor.
X P1705
THROTTLE POSI
SENTP SEN/CIRC A/T
SAT651J
SAT584J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-19

Detected items
(Screen terms for CONSULT-II, ªSELF
DIAGNOSISº test mode)
Malfunction is detected when ...TCM self-diagnosis OBD (DTC)
Available by
CVT or SPORT
indicator lamp
ªCVTº on CON-
SULT-IIAvailable by
malfunction
indicator lamp*2,
ªENGINEº on CON-
SULT-II or GST ªCVTº ªENGINEº
Engine speed signalITCM does not receive the proper volt-
age signal from the ECM.X P0725
ENGINE SPEED SIG
CVT fluid temperature sensorITCM receives an excessively low or
high voltage from the sensor.
X P0710
BATT/FLUID TEMP
SENATF TEMP SEN/
CIRC
Stepping motor circuitINot proper voltage change of the TCM
terminal when operating step motor.
X P1777
STEP MOTOR STEP MOTOR/
CIRC
Stepping motor functionIStep motor is not operating according
to the TCM.
X P1778
ÐSTEP MOTOR/
FNCTN
CVT fluid pressure sensorITCM receives an excessively low or
high voltage from the sensor.
X P1791
LINE PRESSURE
SENLINE PRESS SEN
CVT SAFE FUNCTIONITCM is malfunctioning.
XÐ
CVT SAFE FUNC-
TIONÐ
TCM (RAM)ITCM memory (RAM) is malfunction-
ing.
ÐÐ
CONTROL UNIT
(RAM)Ð
TCM (ROM)ITCM memory (ROM) is malfunction-
ing.
ÐÐ
CONTROL UNIT
(ROM)Ð
TCM (EEP ROM)ITCM memory (EEP ROM) is malfunc-
tioning.
ÐÐ
CONT UNIT (EEP
ROM)Ð
Initial startIThis is not a malfunction message
(Whenever shutting off a power supply
to the TCM, this message appears on
the screen.)XÐ
*INITIAL START*
Ð
No failure
(NO SELF DIAGNOSTIC FAILURE INDI-
CATED FURTHER TESTING MAY BE
REQUIRED**)INo failure has been detected.
XX
X: Applicable
Ð: Not applicable
*1: These malfunctions cannot be displayed by MI
if another malfunction is assigned to MI.
*2: Refer to EC section [ªMalfunction Indicator (MI)º, ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº].
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-20