display NISSAN PRIMERA 1999 Electronic Repair Manual

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

The blinking of the CVT or SPORT indicator lamp for about 8 seconds will appear only once and be cleared.
The customer may resume normal driving conditions.
Always follow the ªWORK FLOWº (Refer to AT-32).
The SELF-DIAGNOSIS results will be as follows:
The first SELF-DIAGNOSIS will indicate damage to the vehicle speed sensor or the revolution sensor.
During the next SELF-DIAGNOSIS, performed after checking the sensor, no damages will be indicated.
OBD SELF-DIAGNOSISNCAT0004S04ICVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the CVT or SPORT indicator. Refer to the table on AT-19 for the indicator used to
display each self-diagnostic result.
IThe self-diagnostic results indicated by the MI are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure ªHOW TO ERASE DTCº on AT-16 to complete the repair and avoid
unnecessary blinking of the MI.
For details of OBD, refer to EC section (ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº).
ICertain systems and components, especially those related to OBD, may use a new style slide-
locking type harness connector.
For description and how to disconnect, refer to EL section, ªDescriptionº, ªHARNESS CONNEC-
TORº.
Wiring Diagrams and Trouble DiagnosisNCAT0005When you read wiring diagrams, refer to the followings:
IªHOW TO READ WIRING DIAGRAMSº in GI section
IªPOWER SUPPLY ROUTINGº for power distribution circuit in EL section
When you perform trouble diagnosis, refer to the followings:
IªHOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSISº in GI section
IªHOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENTº in GI section
PRECAUTIONS
Service Notice or Precautions (Cont'd)
AT-7

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

If a 1st trip DTC is stored in the ECM, the time data will be ª1tº.
Freeze Frame Data and 1st Trip Freeze Frame DataNCAT0020S0101The ECM has a memory function, which stores the driving condition such as fuel system status, calculated
load value, engine coolant temperature, short term fuel trim, long term fuel trim, engine speed and vehicle
speed at the moment the ECM detects a malfunction.
Data which are stored in the ECM memory, along with the 1st trip DTC, are called 1st trip freeze frame data,
and the data, stored together with the DTC data, are called freeze frame data and displayed on CONSULT-II
or GST. The 1st trip freeze frame data can only be displayed on the CONSULT-II screen, not on the GST. For
detail, refer to EC section (ªCONSULT-IIº, ªON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONº).
Only one set of freeze frame data (either 1st trip freeze frame data of freeze frame data) can be stored in the
ECM. 1st trip freeze frame data is stored in the ECM memory along with the 1st trip DTC. There is no prior-
ity for 1st trip freeze frame data and it is updated each time a different 1st trip DTC is detected. However, once
freeze frame data (2nd trip detection/MI on) is stored in the ECM memory, 1st trip freeze frame data is no
longer stored. Remember, only one set of freeze frame data can be stored in the ECM.
The ECM has the following priorities to update the data.
Prior-
ityItems
1 Freeze frame data Misfire Ð DTC: P0300 - P0306 (0300 - 0306)
Fuel Injection System Function Ð DTC: P0171 (0171), P0172 (0172), P0174 (0174), P0175
(0175)
2 Except the above items (Includes CVT related items)
3 1st trip freeze frame data
Both 1st trip freeze frame data and freeze frame data (along with the DTCs) are cleared when the ECM
memory is erased.
HOW TO ERASE DTCNCAT0020S02The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.
IIf the battery terminal is disconnected, the diagnostic trouble code will be lost within 24 hours.
IWhen you erase the DTC, using CONSULT-II or GST is easier and quicker than switching the mode
selector on the ECM.
SAT581J
SAT582J
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD Diagnostic Trouble Code (DTC) (Cont'd)
AT-16

The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD. For details, refer to EC section (ªEmission-related Diagnostic Informationº, ªON BOARD
DIAGNOSTIC SYSTEM DESCRIPTIONº).
IDiagnostic trouble codes (DTC)
I1st trip diagnostic trouble codes (1st trip DTC)
IFreeze frame data
I1st trip freeze frame data
ISystem readiness test (SRT) codes
ITest values
IDistance traveled while MI is activated
IOthers
HOW TO ERASE DTC (WITH CONSULT-II)NCAT0020S03IIf a DTC is displayed for both ECM and TCM, it needs to be erased for both ECM and TCM.
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least
5 seconds and then turn it ªONº (engine stopped) again.
2. Turn CONSULT-II ªONº and touch ªCVTº.
3. Touch ªSELF-DIAG RESULTSº.
4. Touch ªERASEº. (The DTC in the TCM will be erased.) Then touch ªBACKº twice.
5. Touch ªENGINEº.
6. Touch ªSELF-DIAG RESULTSº.
7. Touch ªERASEº. (The DTC in the ECM will be erased.)
SAT681J
How to erase DTC (With CONSULT-II)
1. If the ignition switch stays ªONº after repair work, be sure to turn ignition switch ªOFFº once. Wait at least 5 seconds and then turn it ªONº (engine
stopped) again.
2. Turn CONSULT-II ªONº, and touch ªCVTº. 3. Turn ªSELF DIAGNOSISº. 4. Touch ªERASEº. (The DTC in
the TCM will be erased.)
Touch
ªBACKºTouch
ªBACKº
5. Touch ªENGINEº. 6. Touch ªSELF DIAGNOSISº. 7. Touch ªERASEº. (The DTC in the
ECM will be erased.)
.
.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD Diagnostic Trouble Code (DTC) (Cont'd)
AT-17

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

DATA MONITOR MODE (CVT)NCAT0022S04
Item DisplayMonitor item
Description Remarks
TCM input
signalsMain
signals
Vehicle speed sensor
(Secondary speed sensor)VHCL SPEED
SE
[km/h] or [mph] X ÐIVehicle speed com-
puted from signal of
revolution sensor is dis-
played.When racing engine in ªNº
or ªPº position with vehicle
stationary, CONSULT-II data
may not indicate
0 km/h (0 mph).
Throttle position sensor THRTL POS
SEN
[V]XÐIThrottle position sensor
signal voltage is dis-
played.Ð
CVT fluid temperature
sensorFLUID TEMP
SE
[V]
XÐICVT fluid temperature
sensor signal voltage is
displayed.
ISignal voltage lowers
as fluid temperature
rises.Ð
Battery voltage BATTERY VOLT
[V]XÐISource voltage of TCM
is displayed.Ð
Engine speed ENGINE
SPEED
[rpm] X XIEngine speed, com-
puted from engine
speed signal, is dis-
played.Engine speed display may
not be accurate under
approx. 800 rpm. It may not
indicate 0 rpm even when
engine is not running.
P/N position switch N POSITION
SW
[ON/OFF]XÐION/OFF state com-
puted from signal of
P/N position SW is dis-
played.Ð
R position switch R POSITION
SW
[ON/OFF]XÐION/OFF state com-
puted from signal of R
position SW is dis-
played.Ð
D position switch D POSITION
SW
[ON/OFF]XÐION/OFF state com-
puted from signal of D
position SW is dis-
played.Ð
Sport mode switch S POSITION
SW
[ON/OFF]XÐION/OFF status, com-
puted from signal of
Sport mode SW, is dis-
played.Ð
L position switch L POSITION
SW
[ON/OFF]XÐION/OFF status, com-
puted from signal of L
position SW, is dis-
played.Ð
Closed throttle position
switchCLOSED
THL/SW
[ON/OFF]XÐION/OFF status, com-
puted from signal of
closed throttle position
SW, is displayed.Ð
Wide open throttle position
switchW/O THRL/
P-SW
[ON/OFF]XÐION/OFF status, com-
puted from signal of
wide open throttle posi-
tion SW, is displayed.Ð
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-21

Item DisplayMonitor item
Description Remarks
TCM input
signalsMain
signals
Gear position GEAR
ÐXIGear position (when
use manual mode) data
used for computation by
TCM, is displayed.Ð
Selector lever position SLCT LVR POSI
ÐXISelector lever position
data, used for computa-
tion by TCM, is dis-
played.IA specific value used for
control is displayed if fail-
safe is activated due to
error.
Vehicle speed VEHICLE
SPEED
[km/h] or [mph]ÐXIVehicle speed data,
used for computation by
TCM, is displayed.Ð
Throttle position THROTTLE
POSI
[/8]ÐXIThrottle position data,
used for computation by
TCM, is displayed.IA specific value used for
control is displayed if fail-
safe is activated due to
error.
Line pressure duty LINE PRES
DTY
[%] Ð XIControl value of line
pressure solenoid valve,
computed by TCM from
each input signal, is
displayed.Ð
Torque converter clutch
solenoid valve dutyTCC S/V DUTY
[%]
ÐXIControl value of torque
converter clutch sole-
noid valve, computed
by TCM from each input
signal, is displayed.Ð
Self-diagnosis display
lamp
(SPORT or CVT indicator
lamp)PAT MONI
LAMP
[ON/OFF]ÐXIControl status of
SPORT or CVT indica-
tor lamp is displayed.Ð
CVT fluid pressure sensor LINE PRES-
SURE [V] X ÐICVT fluid pressure sen-
sor signal voltage is
displayed.Ð
Primary pulley speed
sensorI/P PULLY SPD
[rpm]
XXIPrimary pulley speed
computed from signal of
primary pulley speed
sensor is displayed.Ð
Secondary pulley speed
sensorO/P PULLY SPD
[rpm]
ÐÐISecondary pulley speed
computed from signal of
secondary speed sen-
sor is displayed.Ð
Stop lamp switch BRAKE SW
[ON/OFF] X ÐION/OFF position signal
of stop lamp switch is
displayed.Ð
Idle judgement CLSD THL
POSI [ON/OFF] Ð ÐIIdle status judged from
throttle position sensor
signal is displayed.Ð
ABS signal ABS SIGNAL
[ON/OFF] X ÐIABS operation signal
(ON/OFF) from ABS
control unit is displayed.Ð
Manual mode switch MANU MODE
SW [ON/OFF] X ÐION/OFF position signal
of manual mode switch
is displayed.Ð
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-22

Item DisplayMonitor item
Description Remarks
TCM input
signalsMain
signals
Non-manual mode switch NON M MODE
SW [ON/OFF] X ÐION/OFF position signal
of non-manual mode
switch is displayed.Ð
Up switch UP SW
[ON/OFF] X ÐION/OFF position signal
of up switch is dis-
played.Ð
Down switch DOWN SW
[ON/OFF] X ÐION/OFF position signal
of down switch is dis-
played.Ð
Step motor coil A S/M COIL [A]
[ON/OFF]
ÐÐIControl valve of step
motor coil A, computed
by TCM from each input
signal is displayed.Ð
Step motor coil B S/M COIL [B]
[ON/OFF]
ÐÐIControl valve of step
motor coil B, computed
by TCM from each input
signal is displayed.Ð
Step motor coil C S/M COIL [C]
[ON/OFF]
ÐÐIControl valve of step
motor coil C, computed
by TCM from each input
signal is displayed.Ð
Step motor coil D S/M COIL [D]
[ON/OFF]
ÐÐIControl valve of step
motor coil D, computed
by TCM from each input
signal is displayed.Ð
CVT ratio CVT RATIO [Ð]
ÐXIReal CVT ratio operated
TCM is displayed.Ð
Step PLY CONT
STEP [step]ÐXIStep motor position is
displayed.Ð
Line pressure LINE PRES-
SURE [MPa]
ÐXIReal line pressure cal-
culated from line pres-
sure sensor voltage
with TCM is displayed.Ð
Pulley rpm×in 2 T RPM [rpm]
ÐÐITarget primary pulley
speed operated with
TCM is displayed.Ð
CVT ratio 2 T RATIO [Ð]
ÐÐITarget changing the
speed ratio operated
with TCM is displayed.Ð
Step 2 T STEP [step]
ÐÐITarget step motor posi-
tion operated with TCM
is displayed.Ð
X: Applicable
Ð: Not applicable
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
AT-23