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AUTOMATIC TRANSAXLE
SECTION AT (HvCVT)
CONTENTS
TROUBLE DIAGNOSIS -- INDEX..................................3 DTC P0705 PARK/NEUTRAL POSITION (PNP)
Alphabetical & P No. Index for DTC ...........................3 SWITCH .........................................................................65
PRECAUTIONS ...............................................................5 Description .................................................................48
Precautions for Supplemental Restraint System Wiring Diagram -- AT -- PNP/SW ...........................50
(SRS) ``AIR BAG'' and ``SEAT BELT Diagnostic Procedure ................................................51 AT
PRE-TENSIONER''......................................................5 Component Inspection...............................................53
Precautions for On Board Diagnostic (OBD) DTC P0710 CVT FLUID TEMPERATURE
System of CVT and Engine.........................................5 SENSOR CIRCUIT.........................................................54
Precautions ..................................................................5 Description .................................................................54
Service Notice or Precautions .....................................6 Wiring Diagram -- AT -- FTS...................................56
Wiring Diagrams and Trouble Diagnosis.....................7 Diagnostic Procedure ................................................57
PREPARATION ...............................................................8 DTC P0715 PRIMARY SPEED SENSOR .....................59
Special Service Tools ..................................................8 Description .................................................................59
OVERALL SYSTEM ........................................................9 Wiring Diagram -- AT -- VSSA/T.............................60
CVT Electrical Parts Location......................................9 Diagnostic Procedure ................................................61
Circuit Diagram ..........................................................10 Component Inspection...............................................61
Cross-sectional View -- RE0F06A............................11 DTC P0720 VEHICLE SPEED SENSOR CVT
Control System ..........................................................12 (SECONDARY SPEED SENSOR) ................................62
ON BOARD DIAGNOSTIC SYSTEM Description .................................................................62
DESCRIPTION ...............................................................15 Wiring Diagram -- AT -- VSSA/T.............................64
Introduction ................................................................15 Diagnostic Procedure ................................................65
OBD Function for CVT System .................................15 Component Inspection...............................................65
OBD Diagnostic Trouble Code (DTC) .......................15 DTC P0725 ENGINE SPEED SIGNAL .........................66
Malfunction Indicator (MI) ..........................................18 Description .................................................................66
CONSULT-II...............................................................18 Wiring Diagram -- AT -- ENGSS.............................67
TROUBLE DIAGNOSIS -- INTRODUCTION ...............29 Diagnostic Procedure ................................................68
Introduction ................................................................29 DTC P0740 TORQUE CONVERTER CLUTCH
Work Flow..................................................................32 SOLENOID VALVE........................................................69
TROUBLE DIAGNOSIS -- BASIC INSPECTION ........34 Description .................................................................69
CVT Fluid Check .......................................................34 Wiring Diagram -- AT -- TCV ..................................71
Stall Test....................................................................34 Diagnostic Procedure ................................................72
Line Pressure Test ....................................................35 Component Inspection...............................................73
Road Test ..................................................................36 DTC P0745 LINE PRESSURE SOLENOID VALVE .....74
TROUBLE DIAGNOSIS -- GENERAL Description .................................................................74
DESCRIPTION ...............................................................41 Wiring Diagram -- AT -- LPSV ................................76
TCM Terminals and Reference Value.......................41 Diagnostic Procedure ................................................77
TROUBLE DIAGNOSIS FOR POWER SUPPLY..........45 Component Inspection...............................................78
Wiring Diagram -- CVT -- MAIN..............................45
CONTENTS (Cont'd)
DTC P1705 THROTTLE POSITION SENSOR .............79 CONTROL UNIT (EEPROM) .......................................103
Description .................................................................79 Description ...............................................................103
Wiring Diagram -- AT -- TPS ..................................81 Diagnostic Procedure ..............................................104
Diagnostic Procedure ................................................82 TROUBLE DIAGNOSES FOR NON-DETECTABLE
Component Inspection...............................................85 ITEMS...........................................................................105
DTC P1777 STEP MOTOR -- CIRCUIT.......................86 PNP Switch, Stop Lamp Switch and Throttle
Description .................................................................86 Position Switch ........................................................105
Wiring Diagram -- AT -- STM..................................88 Wiring Diagram -- AT -- NONDTC ........................110
Diagnostic Procedure ................................................89 ON-VEHICLE SERVICE ..............................................113
Component Inspection...............................................90 Control Cable Adjustment........................................113
DTC P1778 STEP MOTOR -- FUNCTION...................91 Park/Neutral Position (PNP) Switch Adjustment .....113
Description .................................................................91 Differential Side Oil Seal Replacement ...................113
Diagnostic Procedure ................................................93 REMOVAL AND INSTALLATION ...............................115
DTC P1791 CVT FLUID PRESSURE SENSOR ...........94 Removal...................................................................115
Description .................................................................94 Inspection.................................................................115
Wiring Diagram -- AT -- FPS ..................................96 Installation................................................................116
Diagnostic Procedure ................................................97 Air Breather Hose ....................................................117
Component Inspection...............................................98 CVT Fluid Cooler (Hyper CVT-M6) .........................117
CVT SAFE FUNCTION..................................................99 Components.............................................................118
Description .................................................................99 SERVICE DATA AND SPECIFICATIONS (SDS) .......119
Diagnostic Procedure ..............................................100 General Specifications.............................................119
CONTROL UNIT (RAM), CONTROL UNIT (ROM).....101 Stall Revolution........................................................119
Description ...............................................................101 Line Pressure...........................................................119
Diagnostic Procedure ..............................................102 Removal and Installation .........................................119
AT-2
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC
Alphabetical & P No. Index for DTC NCAT0001
ALPHABETICAL INDEX FOR DTC NCAT0001S01
DTC
Items
CONSULT-II Reference page
(CONSULT-II screen terms) ECM*1
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.
AT-3
TROUBLE DIAGNOSIS -- INDEX
Alphabetical & P No. Index for DTC (Cont'd)
P NO. INDEX FOR DTC =NCAT0001S02
DTC
Items
CONSULT-II Reference page
ECM*1 (CONSULT-II screen terms)
GST*2
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.
AT-4
PRECAUTIONS
Precautions for Supplemental Restraint System (SRS) ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER''
Precautions for Supplemental Restraint System
(SRS) ``AIR BAG'' and ``SEAT BELT
PRE-TENSIONER'' NCAT0002
The Supplemental Restraint System ``AIR BAG'' and ``SEAT BELT PRE-TENSIONER'', used along with a seat
belt, help to reduce the risk or severity of injury to the driver and front passenger in a frontal collision. The
Supplemental Restraint System consists of air bag modules (located in the center of the steering wheel and
on the instrument panel on the passenger side), seat belt pre-tensioners, a diagnosis sensor unit, warning
lamp, wiring harness and spiral cable.
In addition to the supplemental air bag modules for a frontal collision, the supplemental side air bag used along
with the seat belt helps to reduce the risk or severity of injury to the driver and front passenger in a side col-
lision. The supplemental side air bag consists of air bag modules (located in the outer side of front seats),
satellite sensor, diagnosis sensor unit (one of components of supplemental air bags for a frontal collision),
wiring harness, warning lamp (one of components of supplemental air bags for a frontal collision). Information
necessary to service the system safely is included in the RS section of this Service Manual.
WARNING:
+ To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death
in the event of a collision which would result in air bag inflation, all maintenance must be performed
by an authorized NISSAN dealer.
+ Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system.
+ Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses (except ``SEAT BELT PRE-TENSIONER'' connector) can be
identified with yellow harness connector (and with yellow harness protector or yellow insulation
tape before the harness connectors).
Precautions for On Board Diagnostic (OBD)
System of CVT and Engine NCAT0198
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) to warn the driver
of a malfunction causing emission deterioration.
CAUTION:
+ Be sure to turn the ignition switch ``OFF'' and disconnect the negative battery terminal before any
repair or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc.
will cause the MI to light up.
+ Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI to light up due to an open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)
+ Be sure to route and secure the harnesses properly after work. Interference of the harness with a
bracket, etc. may cause the MI to light up due to a short circuit.
+ Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MI to light up due to a malfunction of the EGR system or fuel injection system, etc.
+ Be sure to erase the unnecessary malfunction information (repairs completed) from the TCM and
ECM before returning the vehicle to the customer.
Precautions NCAT0003
+ Before connecting or disconnecting the TCM harness
connector, turn ignition switch OFF and disconnect nega-
tive battery terminal. Failure to do so may damage the
TCM. Because battery voltage is applied to TCM even if
ignition switch is turned off.
SEF289H
AT-5
PRECAUTIONS
Precautions (Cont'd)
+ When 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.
Bend Break
SEF291H
+ Before replacing TCM, perform TCM input/output signal
Perform TCM
input/output signal
inspection and make sure whether TCM functions prop-
inspection before erly or not. (See page AT-41.)
replacement.
MEF040DA
+ After performing each TROUBLE DIAGNOSIS, perform
``DTC (Diagnostic Trouble Code) CONFIRMATION PROCE-
DURE''.
The DTC should not be displayed in the ``DTC CONFIRMA-
TION PROCEDURE'' if the repair is completed.
SAT652J
+ It is very important to perform functional tests whenever they
are indicated.
+ Extreme care should be taken to avoid damage to O-rings,
seals and gaskets when assembling.
+ When 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 ``Changing CVT Fluid'' in
the MA section when changing CVT fluid.
Service Notice or Precautions NCAT0004
FAIL-SAFE NCAT0004S01
The 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 ``L'' or ``D''. The customer may
complain of sluggish or poor acceleration.
When the ignition key is turned ``ON'' following Fail-Safe operation, CVT or SPORT indicator lamp blinks for
about 8 seconds. [For ``TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)'', 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
``OFF'' for 5 seconds, then ``ON''.
AT-6
PRECAUTIONS
Service Notice or Precautions (Cont'd)
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 ``WORK FLOW'' (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-DIAGNOSIS NCAT0004S04
+ CVT 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.
+ The self-diagnostic results indicated by the MI are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure ``HOW TO ERASE DTC'' on AT-16 to complete the repair and avoid
unnecessary blinking of the MI.
For details of OBD, refer to EC section (``ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION'').
+ Certain 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, ``Description'', ``HARNESS CONNEC-
TOR''.
Wiring Diagrams and Trouble Diagnosis NCAT0005
When you read wiring diagrams, refer to the followings:
+ ``HOW TO READ WIRING DIAGRAMS'' in GI section
+ ``POWER SUPPLY ROUTING'' for power distribution circuit in EL section
When you perform trouble diagnosis, refer to the followings:
+ ``HOW TO FOLLOW TEST GROUP IN TROUBLE DIAGNOSIS'' in GI section
+ ``HOW TO PERFORM EFFICIENT DIAGNOSIS FOR AN ELECTRICAL INCIDENT'' in GI section
AT-7
PREPARATION
Special Service Tools
Special Service Tools NCAT0006
Tool number
Description
Tool name
ST2505S001 Measuring line pressure and governor pressure
Oil pressure gauge set
1 ST25051001
Oil pressure gauge
2 ST25052000
Hose
3 ST25053000
Joint pipe
4 ST25054000
Adapter
5 ST25055000
Adapter NT097
KV31103000 Installing differential side oil seal
Drift (Use with ST35325000)
a: 59 mm (2.32 in) dia.
b: 49 mm (1.93 in) dia.
NT105
ST35325000 Installing differential side oil seal
Drift (Use with KV31103000)
a: 215 mm (8.46 in)
b: 25 mm (0.98 in) dia.
c: M12 x 1.5P
NT417
AT-8
OVERALL SYSTEM
CVT Electrical Parts Location
CVT Electrical Parts Location NCAT0008
Steering column
Throttle position sensor and
throttle position switch
Front Indicator C/U
TCM
SPORT indicator lamp
CVT indicator lamp
Secondary speed sensor
PNP switch SPORT mode switch
Dropping
Control valve connector resistor
Inside control valve
Fluid temperature sensor
Fluid pressure sensor
Lock-up solenoid
Line pressure solenoid
Step motor
Primary speed sensor Manual mode switch
SAT671J
AT-9
OVERALL SYSTEM
Circuit Diagram
Circuit Diagram NCAT0009
: Hyper CVT M6 models
CVT indicator (warning)
SPORT indicator lamp
: Hyper CVT models
CONNECTOR
DATA LINK
lamp
THROTTLE
POSITION
SENSOR
CONTROL VALVE
CVT FLUID
TEMPERATURE
SENSOR
DROPPING RESISTOR CVT FLUID
ECM
PRESSURE
SENSOR
LINE
PRESSURE
SOLENOID
VALVE
TORQUE
CONVERTER
FUSE
CLUTCH
ECCS RELAY SOLENOID
VALVE
STEP MOTOR
TCM
SECONDARY
ABS
SPEED
CONTROL UNIT
SENSOR
PRIMARY SPORT MODE
SPEED SWITCH
SENSOR
MANUAL
SWITCH
MODE
SHIFT DOWN
CLOSED
CONTROL DEVICE
SHIFT UP
AUTOMATIC
SWITCH
SWITCH
MANUAL
THROTTLE
MODE
MODE
WIDE POSITION
OPEN SWITCH
BATTERY
STOP LAMP SWITCH
PARK/NEUTRAL
PR N D L
INDICATOR
POSITION
SWITCH
CONTROL UNIT
IGNITION SWITCH
ON or START
COMBINATION
METER
UNIFIED METER
CONTROL UNIT
YAT142
AT-10
OVERALL SYSTEM
Cross-sectional View -- RE0F06A
Cross-sectional View -- RE0F06A NCAT0011
Converter housing
Primary pulley Reverse brake Oil pump
Planet carrier Forward clutch
Torque converter
Steel belt
Sun gear
Input shaft
Side cover
Internal gear Parking gear
Output gear
Taper roller bearing
Reduction gear
Idler gear
Speedometer drive gear
Secondary pulley
Differential case
Final gear
SAT668J
AT-11
OVERALL SYSTEM
Control System
Control System =NCAT0014
OUTLINE NCAT0014S01
The CVT senses vehicle operating conditions through various sensors. It always controls the optimum shift
position and reduces shifting and lock-up shocks.
SENSORS TCM ACTUATORS
PNP switch
Throttle position sensor
Closed throttle position switch
Wide open throttle position switch Shift control
Step motor
Engine speed signal Line pressure control
CVT indicator (warning) lamp
CVT fluid temperature sensor Lock-up control
(Hyper CVT M6 only)
CVT fluid pressure sensor c Fail-safe control c Torque converter clutch
Primary speed sensor Self-diagnosis
solenoid valve
Secondary speed sensor CONSULT-II communication
Line pressure solenoid valve
Stop lamp switch line control
SPORT indicator lamp (Hyper
Sport mode switch (Hyper CVT Duet-EU control
CVT only)
only) On board diagnosis
Indicator control unit (Hyper CVT
M6 only)
ABS control unit
AT-12
OVERALL SYSTEM
Control System (Cont'd)
CONTROL SYSTEM NCAT0014S02
Transaxle
Differential Belt and Forward and
Torque Engine
Wheel gear Final gear Pulley reverse
converter
change
Parking Oil pump
system
Oil pressure control
Control device
Electrical control
Sport mode SW or
manual mode SW
Control valve
Engine speed sensor
[Hyper CVT-M6] Primary pulley
speed and
secondary pulley
speed sensor Throttle
Position
indicator opening
sensor
CVT indicator
(warning) lamp or
SPORT indicator lamp
Indicator C/U
TCM ECM
Mechanical system
ABS C/U
Oil system
Electrical system
PNP switch Stop lamp SW
NAT310
AT-13
OVERALL SYSTEM
Control System (Cont'd)
TCM FUNCTION =NCAT0014S03
The function of the TCM is to:
+ Receive input signals sent from various switches and sensors.
+ Determine required line pressure, shifting point and lock-up operation.
+ Send required output signals to the step motor and the respective solenoids.
INPUT/OUTPUT SIGNAL OF TCM NCAT0014S04
Sensors and actuators Function
PNP 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.
Detects a throttle valve position of greater than 1/2 of full throttle and
Wide open throttle position switch
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.
Input
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.
Sends a signal to the TCM relaying the operation condition of the brake
Stop lamp switch
pedal.
Sends a signal to the TCM relaying the operation condition of the sport
Sport mode switch
mode switch.
Sends a signal to the TCM operation condition of the manual mode switch
Indicator control unit*1
in control device.
ABS control unit Sends a signal to the TCM operation condition of the ABS.
Step motor Regulates pulley position in relation to a signal sent from TCM.
Regulates (or decreases) line pressure suited to driving conditions in rela-
Line pressure solenoid valve
tion to a signal sent from TCM.
Torque converter clutch solenoid Regulates (or decreases) lock-up pressure suited to driving conditions in
Output valve 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
Receives the information of gear position on manual mode from TCM, and
Indicator control unit *1
sends a signal to indicator.
*1: Hyper CVT M6 models only
*2: Hyper CVT M6 models
*3: Hyper CVT models
AT-14
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
Introduction
Introduction NCAT0017
The 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 System NCAT0018
The 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) NCAT0020
HOW TO READ DTC AND 1ST TRIP DTC NCAT0020S01
DTC 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-
Diagnostic Results) Examples: 0705, 0710, 0715, 0720, etc. For details, refer to EC section [``Malfunction
Indicator (MI)'', ``ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION''].
These DTCs are controlled by NISSAN.
2. ( with CONSULT-II or GST) 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.)
+ 1st trip DTC No. is the same as DTC No.
+ Output 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 ``ENGINE'' with CONSULT-II. Time data indicates how many times
the vehicle was driven after the last detection of a DTC.
SAT651J
If the DTC is being detected currently, the time data will be ``0''.
AT-15
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD Diagnostic Trouble Code (DTC) (Cont'd)
SAT581J
If a 1st trip DTC is stored in the ECM, the time data will be ``1t''.
SAT582J
Freeze Frame Data and 1st Trip Freeze Frame Data NCAT0020S0101
The 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 (``CONSULT-II'', ``ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION'').
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- Items
ity
1 Freeze frame data Misfire -- DTC: P0300 - P0306 (0300 - 0306)
Fuel Injection System Function -- 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 DTC NCAT0020S02
The diagnostic trouble code can be erased by CONSULT-II, GST or ECM DIAGNOSTIC TEST MODE as
described following.
+ If the battery terminal is disconnected, the diagnostic trouble code will be lost within 24 hours.
+ When you erase the DTC, using CONSULT-II or GST is easier and quicker than switching the mode
selector on the ECM.
AT-16
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD Diagnostic Trouble Code (DTC) (Cont'd)
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to OBD. For details, refer to EC section (``Emission-related Diagnostic Information'', ``ON BOARD
DIAGNOSTIC SYSTEM DESCRIPTION'').
+ Diagnostic trouble codes (DTC)
+ 1st trip diagnostic trouble codes (1st trip DTC)
+ Freeze frame data
+ 1st trip freeze frame data
+ System readiness test (SRT) codes
+ Test values
+ Distance traveled while MI is activated
+ Others
HOW TO ERASE DTC (WITH CONSULT-II) NCAT0020S03
+ If 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 ``ON'' after repair work, be sure to turn ignition switch ``OFF'' once. Wait at least
5 seconds and then turn it ``ON'' (engine stopped) again.
2. Turn CONSULT-II ``ON'' and touch ``CVT''.
3. Touch ``SELF-DIAG RESULTS''.
4. Touch ``ERASE''. (The DTC in the TCM will be erased.) Then touch ``BACK'' twice.
5. Touch ``ENGINE''.
6. Touch ``SELF-DIAG RESULTS''.
7. Touch ``ERASE''. (The DTC in the ECM will be erased.)
How to erase DTC (With CONSULT-II)
1. If the ignition switch stays ``ON'' after repair work, be sure to turn ignition switch ``OFF'' once. Wait at least 5 seconds and then turn it ``ON''
(engine stopped) again.
.
2. Turn CONSULT-II ``ON'', and touch ``CVT''. 3. Turn ``SELF DIAGNOSIS''. 4. Touch ``ERASE''. (The DTC in
the TCM will be erased.)
Touch Touch
``BACK'' ``BACK''
.
5. Touch ``ENGINE''. 6. Touch ``SELF DIAGNOSIS''. 7. Touch ``ERASE''. (The DTC in the
ECM will be erased.)
SAT681J
AT-17
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
OBD Diagnostic Trouble Code (DTC) (Cont'd)
HOW TO ERASE DTC (WITH GST) NCAT0020S04
1. If the ignition switch stays ``ON'' after repair work, be sure to turn ignition switch ``OFF'' once. Wait at least
5 seconds and then turn it ``ON'' (engine stopped) again.
2. Perform ``OBD SELF-DIAGNOSTIC PROCEDURE (No Tools)''. Refer to AT-25. (The engine warm-up step
can be skipped when performing the diagnosis only to erase the DTC.)
3. Select Mode 4 with Generic Scan Tool (GST). For details, refer to EC section ``Generic Scan Tool (GST)''.
HOW TO ERASE DTC (NO TOOLS) NCAT0020S05
1. If the ignition switch stays ``ON'' after repair work, be sure to turn ignition switch ``OFF'' once. Wait at least
5 seconds and then turn it ``ON'' (engine stopped) again.
2. Perform ``TCM SELF-DIAGNOSTIC PROCEDURE (No Tools)''. Refer to AT-25. (The engine warm-up step
can be skipped when performing the diagnosis only to erase the DTC.)
3. Change the diagnostic test mode from Mode II to Mode I by turning the mode selector on the ECM.
Refer to EC section ``HOW TO SWITCH DIAGNOSTIC TEST MODES''.
Malfunction Indicator (MI) NCAT0021
1. The malfunction indicator will light up when the ignition switch
is turned ON without the engine running. This is for checking
the lamp.
+ If the malfunction indicator does not light up, refer to EL sec-
tion (``Warning Lamps/System Description'', ``WARNING
LAMPS AND CHIME'').
(Or see MI & Data Link Connectors in EC section.)
2. When the engine is started, the malfunction indicator should go
off.
SAT652J If the lamp remains on, the on board diagnostic system has
detected an emission-related (OBD) malfunction. For detail,
refer to EC section (``ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION'').
CONSULT-II NCAT0022
After performing ``SELF-DIAGNOSTIC PROCEDURE (WITH CON-
SULT-II)'' (AT-19), place check marks for results on the ``DIAGNOS-
TIC WORKSHEET'', AT-31. Reference pages are provided follow-
ing the items.
NOTICE:
+ Additional CONSULT-II information can be found in the Opera-
tion Manual supplied with the CONSULT-II unit.
AT-18
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
CONSULT-II (Cont'd)
SELF-DIAGNOSTIC PROCEDURE
(WITH CONSULT-II) NCAT0022S02
1. Turn on CONSULT-II and touch ``ENGINE'' for OBD detected
items or touch ``CVT'' 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
(``POWER SUPPLY ROUTING'').
SAT651J
2. Touch ``SELF DIAGNOSIS''.
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.
SAT584J
SELF-DIAGNOSTIC RESULT TEST MODE NCAT0022S03
TCM self-diagnosis OBD (DTC)
Detected items
(Screen terms for CONSULT-II, ``SELF
DIAGNOSIS'' test mode)
Malfunction is detected when ... Available by Available by
CVT or SPORT malfunction
indicator lamp indicator lamp*2,
``CVT'' ``ENGINE'' ``CVT'' on CON- ``ENGINE'' on CON-
SULT-II SULT-II or GST
PNP switch circuit + TCM does not receive the correct volt-
age signal (based on the gear posi- -- P0705
PNP SW/CIRCUIT PNP SW/CIRC tion) from the switch.
Primary speed sensor + TCM does not receive the proper volt-
age signal from the sensor. X P0715
PRI SPEED SIG/
I/P PULLY SPD SIG
CIRC
Secondary speed sensor + TCM does not receive the proper vol◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo