2001 NISSAN ALMERA N16 Code

AUTOMATIC TRANSAXLE
SECTION
AT
CONTENTS
EURO-OBD
TROUBLE DIAGNOSIS - INDEX....................................5
Alphabetical & P No. Index for DTC ...........................5
PRECAUTIONS...............................................................7
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...............7
Precautions for On Board Diagnostic (EURO-
OBD) System of A/T and Engine - Euro-OBD - ..........7
Precautions ..................................................................7
Service Notice or Precautions .....................................9
Wiring Diagrams and Trouble Diagnosis ...................10
PREPARATION............................................................. 11
Special Service Tools ................................................ 11
Commercial Service Tools .........................................13
A/T FLUID......................................................................15
Checking A/T Fluid ....................................................15
Changing A/T Fluid ....................................................15
OVERALL SYSTEM......................................................16
A/T Electrical Parts Location .....................................16
Circuit Diagram ..........................................................17
Cross-sectional View - ...............................................18
Hydraulic Control Circuit ............................................19
Shift Mechanism ........................................................20
Control System ..........................................................29
Control Mechanism ....................................................30
Control Valve .............................................................35
EXCEPT FOR EURO-OBD
ON BOARD DIAGNOSTIC SYSTEM............................37
CONSULT-II ...............................................................37
Diagnostic Procedure Without CONSULT-II ..............42
EURO-OBD
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................48Introduction ................................................................48
EURO-OBD Function for A/T System .......................48
One or Two Trip Detection Logic of EURO-OBD ......48
EURO-OBD Diagnostic Trouble Code (DTC)............48
Malfunction Indicator (MI) ..........................................52
CONSULT-II ...............................................................52
Diagnostic Procedure Without CONSULT-II ..............61
EXCEPT FOR EURO-OBD
TROUBLE DIAGNOSIS -...............................................67
Introduction ................................................................67
Work Flow ..................................................................71
EURO-OBD
TROUBLE DIAGNOSIS - INTRODUCTION..................72
Introduction ................................................................72
Work Flow ..................................................................76
TROUBLE DIAGNOSIS - BASIC INSPECTION...........78
A/T Fluid Check .........................................................78
Stall Test ....................................................................78
Line Pressure Test .....................................................82
Road Test...................................................................83
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................103
Symptom Chart ........................................................103
TCM Terminals and Reference Value...................... 116
TROUBLE DIAGNOSIS FOR POWER SUPPLY........121
Wiring Diagram - AT - MAIN ....................................121
Diagnostic Procedure ..............................................122
EXCEPT FOR EURO-OBD
VEHICLE SPEED SENSOR.A/T..................................124
Description ...............................................................124
Wiring Diagram - AT - VSSA/T ................................126
Diagnostic Procedure ..............................................127

AAT470A
+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.
MEF040DA
+Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions prop-
erly or not. (See page AT-116.)
SAT964I
+After 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.
+Before proceeding with disassembly, thoroughly clean the out-
side of the transaxle. It is important to prevent the internal parts
from becoming contaminated by dirt or other foreign matter.
+Disassembly should be done in a clean work area.
+Use lint-free cloth or towels for wiping parts clean. Common
shop rags can leave fibers that could interfere with the opera-
tion of the transaxle.
+Place disassembled parts in order for easier and proper
assembly.
+All parts should be carefully cleaned with a general purpose,
non-flammable solvent before inspection or reassembly.
+Gaskets, seals and O-rings should be replaced any time the
transaxle is disassembled.
+It is very important to perform functional tests whenever they
are indicated.
+The valve body contains precision parts and requires extreme
care when parts are removed and serviced. Place disas-
sembled valve body parts in order for easier and proper
assembly. Care will also prevent springs and small parts from
becoming scattered or lost.
+Properly installed valves, sleeves, plugs, etc. will slide along
bores in valve body under their own weight.
+Before assembly, apply a coat of recommended ATF to all
PRECAUTIONS
Precautions (Cont'd)
AT-8

6 CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp. Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-45.
NAT352
©DIAGNOSIS END
JUDGEMENT OF SELF-DIAGNOSIS CODENJAT0230S02
O/D OFF indicator lamp:
All judgement flickers are the same.
SAT436F
All circuits that can be confirmed by self-diagnosis are OK.1st judgement flicker is longer than others.
SAT437F
Revolution sensor circuit is short-circuited or disconnected.
ÞGo to VEHICLE SPEED SENSOR´A/T (REVOLUTION SEN-
SOR).
General: AT-124
2nd judgement flicker is longer than others.
SAT439F
Vehicle speed sensor circuit is short-circuited or disconnected.
ÞGo to VEHICLE SPEED SENSOR´MTR.
General: AT-1293rd judgement flicker is longer than others.SAT441F
Throttle position sensor circuit is short-circuited or disconnected.
ÞGo to THROTTLE POSITION SENSOR.
General: AT-132
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION
EXCEPT FOR EURO-OBD
Diagnostic Procedure Without CONSULT-II (Cont'd)
AT-45

IntroductionNJAT0251The A/T system has two self-diagnostic systems.
The first is the emission-related on board diagnostic system (EURO-OBD) performed by the TCM in combi-
nation 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 O/D OFF indicator lamp. The malfunction is
stored in the TCM memory. The detected items are overlapped with EURO-OBD self-diagnostic items. For
detail, refer to AT-53.
EURO-OBD Function for A/T SystemNJAT0252The ECM provides emission-related on board diagnostic (EURO-OBD) functions for the A/T system. One
function is to receive a signal from the TCM used with EURO-OBD-related parts of the A/T system. The sig-
nal is sent to the ECM when a malfunction occurs in the corresponding EURO-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 One or Two Trip Detection Logic when a malfunction is sensed in relation
to A/T system parts.
One or Two Trip Detection Logic of EURO-OBDNJAT0253ONE TRIP DETECTION LOGICNJAT0253S01If a malfunction is sensed during the first test drive, the MI will illuminate and the malfunction will be stored
in the ECM memory as a DTC. The TCM is not provided with such a memory function.
TWO TRIP DETECTION LOGICNJAT0253S02When a malfunction is sensed during the first test drive, it is stored in the ECM memory as a 1st trip DTC
(diagnostic trouble code) or 1st trip freeze frame data. At this point, the MI will not illuminate. Ð First Trip
If the same malfunction as that experienced during the first test drive is sensed during the second test drive,
the MI will illuminate. Ð Second Trip
A/T-related parts for which the MI illuminates during the first or second test drive are listed below.
ItemsMI
One trip detection Two trip detection
Shift solenoid valve A Ð DTC: P0750 X
Shift solenoid valve B Ð DTC: P0755 X
Throttle position sensor or switch Ð DTC: P1705 X
Except aboveX
The ªtripº in the ªOne or Two Trip Detection Logicº means a driving mode in which self-diagnosis is performed
during vehicle operation.
EURO-OBD Diagnostic Trouble Code (DTC)NJAT0254HOW TO READ DTC AND 1ST TRIP DTCNJAT0254S01DTC and 1st trip DTC can be read by the following methods.
(
with CONSULT-II orGST)CONSULT-II or GST (Generic Scan Tool) Examples: P0705, P0710, P0720,
P0725, etc.
These DTCs are prescribed by SAE J2012.
(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 in the following page. DTC or 1st trip DTC of a malfunc-
tion is displayed in SELF DIAGNOSIS mode for ªENGINEº with CONSULT-II. Time data indicates how many
times the vehicle was driven after the last detection of a DTC.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
Introduction
AT-48

SAT014K
If the DTC is being detected currently, the time data will be ª0º.
SAT015K
If a 1st trip DTC is stored in the ECM, the time data will be ª1tº.
SAT016K
Freeze Frame Data and 1st Trip Freeze Frame DataNJAT0254S0101The 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-81, ªCONSULT-IIº.
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.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
EURO-OBD Diagnostic Trouble Code (DTC) (Cont'd)
AT-49

Priority Items
1 Freeze frame data Misfire Ð DTC: P0300 - P0306
Fuel Injection System Function Ð DTC: P0171, P0172, P0174, P0175
2 Except the above items (Includes A/T 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 DTCNJAT0254S02The 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.
The following emission-related diagnostic information is cleared from the ECM memory when erasing DTC
related to EURO-OBD. For details, refer to EC-68, ªHow to Erase Emission-related Diagnostic Informationº.
+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
HOW TO ERASE DTC (WITH CONSULT-II)NJAT0254S03+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 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 ªA/Tº.
3. Touch ªSELF DIAGNOSISº.
4. Touch ªERASEº. (The DTC in the TCM will be erased.) Then touch ªBACKº twice.
5. Touch ªENGINEº.
6. Touch ªSELF DIAGNOSISº.
7. Touch ªERASEº. (The DTC in the ECM will be erased.)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
EURO-OBD Diagnostic Trouble Code (DTC) (Cont'd)
AT-50

SAT017K
HOW TO ERASE DTC (WITH GST)NJAT0254S041. 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. Perform ªEURO-OBD SELF-DIAGNOSTIC PROCEDURE (No Tools)º. Refer to AT-61. (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-92, ªGeneric Scan Tool (GST)º.
HOW TO ERASE DTC (NO TOOLS)NJAT0254S051. 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. Perform ªTCM SELF-DIAGNOSTIC PROCEDURE (No Tools)º. Refer to AT-61. (The engine warm-up step
can be skipped when performing the diagnosis only to erase the DTC.)
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
EURO-OBD Diagnostic Trouble Code (DTC) (Cont'd)
AT-51

6 CHECK SELF-DIAGNOSIS CODE
Check O/D OFF indicator lamp. Refer to JUDGEMENT OF SELF-DIAGNOSIS CODE, AT-64.
NAT352
©DIAGNOSIS END
JUDGEMENT OF SELF-DIAGNOSIS CODENJAT0352S02
O/D OFF indicator lamp:
All judgement flickers are the same.
SAT436F
All circuits that can be confirmed by self-diagnosis are OK.1st judgement flicker is longer than others.
SAT437F
Revolution sensor circuit is short-circuited or disconnected.
ÞGo to VEHICLE SPEED SENSOR´A/T (REVOLUTION SEN-
SOR).
EURO-OBD: AT-193
2nd judgement flicker is longer than others.
SAT439F
Vehicle speed sensor circuit is short-circuited or disconnected.
ÞGo to VEHICLE SPEED SENSOR´MTR.
EURO-OBD: AT-2783rd judgement flicker is longer than others.SAT441F
Throttle position sensor circuit is short-circuited or disconnected.
ÞGo to THROTTLE POSITION SENSOR.
EURO-OBD: AT-256
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTIONEURO-OBD
Diagnostic Procedure Without CONSULT-II (Cont'd)
AT-64