1999 NISSAN PRIMERA dtc 34

AUTOMATIC TRANSAXLE
SECTION
AT(H×CVT)
CONTENTS
TROUBLE DIAGNOSIS - INDEX....................................3
Alphabetical & P No. Index for DTC ...........................3
PRECAUTIONS...............................................................5
Precautions for Supplemental Restraint System
(SRS)²AIR BAG²and²SEAT BELT
PRE-TENSIONER²......................................................5
Precautions for On Board Diagnostic (OBD)
System of CVT and Engine .........................................5
Precautions ..................................................................5
Service Notice or Precautions .....................................6
Wiring Diagrams and Trouble Diagnosis .....................7
PREPARATION...............................................................8
Special Service Tools ..................................................8
OVERALL SYSTEM........................................................9
CVT Electrical Parts Location......................................9
Circuit Diagram ..........................................................10
Cross-sectional View - RE0F06A .............................. 11
Control System ..........................................................12
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................15
Introduction ................................................................15
OBD Function for CVT System .................................15
OBD Diagnostic Trouble Code (DTC) .......................15
Malfunction Indicator (MI) ..........................................18
CONSULT-II ...............................................................18
TROUBLE DIAGNOSIS - INTRODUCTION..................29
Introduction ................................................................29
Work Flow ..................................................................32
TROUBLE DIAGNOSIS - BASIC INSPECTION...........34
CVT Fluid Check .......................................................34
Stall Test ....................................................................34
Line Pressure Test .....................................................35
Road Test...................................................................36
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION...............................................................41
TCM Terminals and Reference Value........................41TROUBLE DIAGNOSIS FOR POWER SUPPLY..........45
Wiring Diagram - CVT - MAIN...................................45
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH.........................................................................48
Description .................................................................48
Wiring Diagram - AT - PNP/SW.................................50
Diagnostic Procedure ................................................51
Component Inspection ...............................................53
DTC P0710 CVT FLUID TEMPERATURE SENSOR
CIRCUIT.........................................................................54
Description .................................................................54
Wiring Diagram - AT - FTS ........................................56
Diagnostic Procedure ................................................57
DTC P0715 PRIMARY SPEED SENSOR.....................59
Description .................................................................59
Wiring Diagram - AT - VSSA/T ..................................60
Diagnostic Procedure ................................................61
Component Inspection ...............................................61
DTC P0720 VEHICLE SPEED SENSOR CVT
(SECONDARY SPEED SENSOR)................................62
Description .................................................................62
Wiring Diagram - AT - VSSA/T ..................................64
Diagnostic Procedure ................................................65
Component Inspection ...............................................65
DTC P0725 ENGINE SPEED SIGNAL.........................66
Description .................................................................66
Wiring Diagram - AT - ENGSS ..................................67
Diagnostic Procedure ................................................68
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE........................................................69
Description .................................................................69
Wiring Diagram - AT - TCV........................................71
Diagnostic Procedure ................................................72
Component Inspection ...............................................73
DTC P0745 LINE PRESSURE SOLENOID VALVE.....74
Description .................................................................74
AT

Wiring Diagram - AT - LPSV......................................76
Diagnostic Procedure ................................................77
Component Inspection ...............................................78
DTC P1705 THROTTLE POSITION SENSOR.............79
Description .................................................................79
Wiring Diagram - AT - TPS ........................................81
Diagnostic Procedure ................................................82
Component Inspection ...............................................85
DTC P1777 STEP MOTOR - CIRCUIT.........................86
Description .................................................................86
Wiring Diagram - AT - STM .......................................88
Diagnostic Procedure ................................................89
Component Inspection ...............................................90
DTC P1778 STEP MOTOR - FUNCTION.....................91
Description .................................................................91
Diagnostic Procedure ................................................93
DTC P1791 CVT FLUID PRESSURE SENSOR...........94
Description .................................................................94
Wiring Diagram - AT - FPS ........................................96
Diagnostic Procedure ................................................97
Component Inspection ...............................................98
CVT SAFE FUNCTION..................................................99
Description .................................................................99
Diagnostic Procedure ..............................................100
CONTROL UNIT (RAM), CONTROL UNIT (ROM).....101
Description ...............................................................101Diagnostic Procedure ..............................................102
CONTROL UNIT (EEPROM).......................................103
Description ...............................................................103
Diagnostic Procedure ..............................................104
TROUBLE DIAGNOSES FOR NON-DETECTABLE
ITEMS...........................................................................105
PNP Switch, Stop Lamp Switch and Throttle
Position Switch ........................................................105
Wiring Diagram - AT - NONDTC ............................. 110
ON-VEHICLE SERVICE.............................................. 114
Control Cable Adjustment ........................................ 114
Park/Neutral Position (PNP) Switch Adjustment ..... 114
Differential Side Oil Seal Replacement ................... 114
REMOVAL AND INSTALLATION............................... 116
Removal ................................................................... 116
Inspection................................................................. 116
Installation ................................................................ 117
Air Breather Hose .................................................... 118
CVT Fluid Cooler (Hyper CVT-M6) ......................... 118
Components............................................................. 119
SERVICE DATA AND SPECIFICATIONS (SDS).......120
General Specifications .............................................120
Stall Revolution ........................................................120
Line Pressure...........................................................120
Removal and Installation .........................................120
CONTENTS(Cont'd)
AT-2

Alphabetical & P No. Index for DTCNCAT0001ALPHABETICAL INDEX FOR DTCNCAT0001S01
Items
(CONSULT-II screen terms)DTC
Reference page
ECM*1CONSULT-II
GST*2
ATF TEMP SEN/CIRC 0710 P0710 AT-54
ENG SPEED SIG 0725 P0725 AT-66
LINE PRESSURE SEN 1791 P1791 AT-94
L/PRESS SOL/CIRC 0745 P0745 AT-74
PNP SW/CIRC 0705 P0705 AT-48
PRI SPEED SIG/CIRC 0715 P0715 AT-59
STEP MOTOR/CIRC 1777 P1777 AT-86
STEP MOTOR/FNCTN 1778 P1778 AT-91
TP SEN/CIRC A/T*3 1705 P1705 AT-79
TCC SOLENOID/CIRC 0740 P0740 AT-69
VEH SPD SEN/CIR A/T 0720 P0720 AT-62
*1: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
TROUBLE DIAGNOSIS Ð INDEX
Alphabetical & P No. Index for DTC
AT-3

P NO. INDEX FOR DTC=NCAT0001S02
DTC
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1
P0705 0705 PNP SW/CIRC AT-48
P0710 0710 ATF TEMP SEN/CIRC AT-54
P0715 0715 PRI SPEED SIG/CIRC AT-59
P0720 0720 VEH SPD SEN/CIR AT AT-62
P0725 0725 ENG SPEED SIG AT-66
P0740 0740 TCC SOLENOID/CIRC AT-69
P0745 0745 L/PRESS SOL/CIRC AT-74
P1705 1705 TP SEN/CIRC A/T*3 AT-79
P1777 1777 STEP MOTOR/CIRC AT-86
P1778 1778 STEP MOTOR/FNCTN AT-91
P1791 1791 LINE PRESSURE SEN AT-94
*1: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
TROUBLE DIAGNOSIS Ð INDEX
Alphabetical & P No. Index for DTC (Cont'd)
AT-4

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