2003 NISSAN ALMERA N16 DIAGRAM

AT-1
AUTOMATIC TRANSAXLE
C TRANSMISSION/TRANSAXLE
CONTENTS
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SECTION
A
B
AT
AUTOMATIC TRANSAXLE
PRECAUTIONS .......................................................... 5
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 5
Precautions for On Board Diagnostic (EURO-OBD)
System of A/T and Engine — Euro-OBD — ............. 5
Precautions for Trouble Diagnosis ........................... 5
Precautions for Harness Repair ............................... 5
Precautions .............................................................. 6
Service Notice or Precautions .................................. 7
Wiring Diagrams and Trouble Diagnosis .................. 8
PREPARATION ........................................................... 9
Special Service Tools ............................................... 9
Commercial Service Tools ...................................... 12
A/T FLUID ................................................................. 13
Checking A/T Fluid ................................................. 13
Changing A/T Fluid ............................................. ... 13
OVERALL SYSTEM ................................................. 14
A/T Electrical Parts Location .................................. 14
Circuit Diagram ...................................................... 15
Cross-Sectional View ............................................. 16
Hydraulic Control Circuit ........................................ 17
Shift Mechanism ..................................................... 18
Control System ....................................................... 27
Control Mechanism ................................................ 28
Control Valve .......................................................... 34
EURO-OBD
TROUBLE DIAGNOSIS — INDEX ........................... 35
Alphabetical & P No. Index for DTC ....................... 35
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION .......................................................................... 37
Introduction ............................................................ 37
EURO-OBD Function for A/T System .................... 37
One or Two Trip Detection Logic of EURO-OBD ... 37
EURO-OBD Diagnostic Trouble Code (DTC) ......... 37
Malfunction Indicator (MI) ....................................... 41
CONSULT-II ........................................................... 41
Diagnostic Procedure Without CONSULT-II ........... 50TROUBLE DIAGNOSIS — INTRODUCTION ........... 56
Introduction ............................................................. 56
Work Flow ............................................................... 60
TROUBLE DIAGNOSIS — BASIC INSPECTION .... 63
A/T Fluid Check ...................................................... 63
Stall Test ................................................................. 64
Line Pressure Test .................................................. 67
Road Test ............................................................... 68
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION .......................................................................... 86
Symptom Chart ....................................................... 86
TCM Terminals and Reference Value ...................106
CAN COMMUNICATION .........................................109
System Description ...............................................109
CAN Communication Unit .....................................109
DTC P0705 PARK/NEUTRAL POSITION (PNP)
SWITCH ...................................................................111
Description .............................................................111
Wiring Diagram — AT — PNP/SW .......................113
Diagnostic Procedure ...........................................114
Component Inspection ..........................................116
DTC P0710 A/T FLUID TEMPERATURE SENSOR
CIRCUIT ..................................................................117
Description ............................................................117
Wiring Diagram — AT — FTS ..............................119
Diagnostic Procedure ...........................................120
Component Inspection ..........................................122
DTC P0720 VEHICLE SPEED SENSOR A/T (REV-
OLUTION SENSOR) ...............................................123
Description ............................................................123
Wiring Diagram — AT — VSSA/T ........................126
Diagnostic Procedure ...........................................127
DTC P0725 ENGINE SPEED SIGNAL ...................129
Description ............................................................129
Wiring Diagram — AT — ENGSS .........................130
Diagnostic Procedure ..........................................
.131
DTC P0731 A/T 1ST GEAR FUNCTION ................133
Description ............................................................133
Wiring Diagram — AT — 1ST ...............................136

AT-2
Diagnostic Procedure ...........................................137
Component Inspection ..........................................138
DTC P0732 A/T 2ND GEAR FUNCTION ................139
Description ............................................................139
Wiring Diagram — AT — 2ND ..............................142
Diagnostic Procedure ...........................................143
Component Inspection ..........................................144
DTC P0733 A/T 3RD GEAR FUNCTION ................145
Description ............................................................145
Wiring Diagram — AT — 3RD ..............................148
Diagnostic Procedure ...........................................149
Component Inspection ..........................................150
DTC P0734 A/T 4TH GEAR FUNCTION ................151
Description ............................................................151
Wiring Diagram — AT — 4TH ...............................154
Diagnostic Procedure ...........................................155
Component Inspection ..........................................158
DTC P0740 TORQUE CONVERTER CLUTCH
SOLENOID VALVE .................................................159
Description ............................................................159
Wiring Diagram — AT — TCV ..............................161
Diagnostic Procedure ...........................................162
Component Inspection ..........................................163
DTC P0745 LINE PRESSURE SOLENOID VALVE .164
Description ............................................................164
Wiring Diagram — AT — LPSV ............................166
Diagnostic Procedure ...........................................167
Component Inspection ..........................................169
DTC P0750 SHIFT SOLENOID VALVE A ...............171
Description ............................................................171
Wiring Diagram — AT — SSV/A ...........................173
Diagnostic Procedure ...........................................174
Component Inspection ..........................................175
DTC P0755 SHIFT SOLENOID VALVE B ...............176
Description ............................................................176
Wiring Diagram — AT — SSV/B ...........................178
Diagnostic Procedure ...........................................179
Component Inspection ..........................................179
DTC P1705 ACCELERATOR PEDAL POSITION
(APP) SENSOR .......................................................181
Description ............................................................181
Wiring Diagram — AT — TPS ..............................184
Diagnostic Procedure ...........................................185
DTC P1760 OVERRUN CLUTCH SOLENOID
VALVE .....................................................................187
Description ............................................................187
Wiring Diagram — AT — OVRCSV ......................189
Diagnostic Procedure ...........................................190
Component Inspection ..........................................191
DTC U1000 CAN COMMUNICATION LINE ............192
Description ............................................................192
On Board Diagnosis Logic ....................................192
DTC Confirmation Procedure ...............................192
Wiring Diagram — AT ...........................................193
Diagnostic Procedure ...........................................194
DTC BATT/FLUID TEMP SEN (A/T FLUID TEMP
SENSOR CIRCUIT AND TCM POWER SOURCE) .195
Description ............................................................195
Wiring Diagram — AT — BA/FTS .........................197Diagnostic Procedure ............................................198
Component Inspection ..........................................200
DTC VEHICLE SPEED SENSOR MTR ...................201
Description ............................................................201
Wiring Diagram — AT — VSSMTR .......................203
Diagnostic Procedure ............................................204
DTC CONTROL UNIT (RAM), CONTROL UNIT
(ROM) ......................................................................205
Description ............................................................205
Diagnostic Procedure ............................................206
DTC CONTROL UNIT (EEP ROM) .........................207
Description ............................................................207
Diagnostic Procedure ............................................208
TROUBLE DIAGNOSES FOR SYMPTOMS ...........209
Wiring Diagram — AT — NONDTC ......................209
1. O/D OFF Indicator Lamp Does Not Come On ..211
2. Engine Cannot Be Started In “P” and “N” Position .212
3. In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed ...............................................213
4. In “N” Position, Vehicle Moves ..........................214
5. Large Shock. “N” → “R” Position ......................215
6. Vehicle Does Not Creep Backward In “R” Position .216
7. Vehicle Does Not Creep Forward In “D”, “2” Or
“1” Position ............................................................219
8. Vehicle Cannot Be Started From D
1 .................221
9. A/T Does Not Shift: D
1→ D2 Or Does Not Kick-
down: D
4→ D2 .....................................................223
10. A/T Does Not Shift: D
2→ D3 ..........................225
11. A/T Does Not Shift: D
3→ D4 ...........................227
12. A/T Does Not Perform Lock-up .......................230
13. A/T Does Not Hold Lock-up Condition ............231
14. Lock-up Is Not Released .................................232
15. Engine Speed Does Not Return To Idle (Light
Braking D
4→ D3 ) .................................................233
16. Vehicle Does Not Start From D
1 .....................234
17. A/T Does Not Shift: D
4→ D3 , W h e n O v e r d r i v e
Control Switch “ON” → “OFF” ...............................235
18. A/T Does Not Shift: D
3→ 22 , When Selector
Lever “D” → “2” Position .......................................235
19. A/T Does Not Shift: 2
2→ 11 , When Selector
Lever “2” → “1” Position ........................................236
20. Vehicle Does Not Decelerate By Engine Brake .237
21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position
Sensor Circuit Checks) .........................................237
EXC.F/EURO-OBD
ON BOARD DIAGNOSTIC SYSTEM DESCRIP-
TION ........................................................................244
CONSULT-II ..........................................................244
Diagnostic Procedure Without CONSULT-II .........250
TROUBLE DIAGNOSIS — INTRODUCTION .........255
Introduction ...........................................................255
Work Flow .............................................................259
TROUBLE DIAGNOSIS — BASIC INSPECTION ...261
A/T Fluid Check ....................................................261
Stall Test ................................................................262

AT-3
D
E
F
G
H
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K
L
MA
B
AT Line Pressure Test ............................................... 265
Road Test ............................................................. 266
TROUBLE DIAGNOSIS — GENERAL DESCRIP-
TION ........................................................................ 283
Symptom Chart .................................................... 283
TCM Terminals and Reference Value ................... 302
CAN COMMUNICATION ........................................ 305
System Description .............................................. 305
CAN Communication Unit .................................... 305
TROUBLE DIAGNOSES FOR SYMPTOMS .......... 307
Wiring Diagram — AT — NONDTC ...................... 307
1. O/D OFF Indicator Lamp Does Not Come On . 309
2. Engine Cannot Be Started In “P” and “N” Position . 309
3. In “P” Position, Vehicle Moves Forward Or Back-
ward When Pushed .............................................. 310
4. In “N” Position, Vehicle Moves .......................... 311
5. Large Shock. “N” → “R” Position ...................... 312
6. Vehicle Does Not Creep Backward In “R” Position . 313
7. Vehicle Does Not Creep Forward In “D”, “2” Or
“1” Position ........................................................... 316
8. Vehicle Cannot Be Started From D
1 ................. 317
9. A/T Does Not Shift: D
1→ D2 Or Does Not Kick
down: D
4→ D2 ..................................................... 320
10. A/T Does Not Shift: D
2→ D3 ......................... 322
11. A/T Does Not Shift: D
3→ D4 .......................... 324
12. A/T Does Not Perform Lock-up ...................... 326
13. A/T Does Not Hold Lock-up Condition ........... 326
14. Lock-up Is Not Released ................................ 328
15. Engine Speed Does Not Return To Idle (Light
Braking D
4→ D3 ) ................................................ 328
16. Vehicle Does Not Start From D
1 ..................... 330
17. A/T Does Not Shift: D
4→ D3 , When Overdrive
Control Switch “ON” → “OFF” .............................. 330
18. A/T Does Not Shift: D
3→ 22 , When Selector
Lever “D” → “2” Position ...................................... 331
19. A/T Does Not Shift: 2
2→ 11 , When Selector
Lever “2” → “1” Position ....................................... 332
20. Vehicle Does Not Decelerate By Engine Brake . 333
21. TCM Self-diagnosis Does Not Activate (PNP &
Overdrive Control Switches, and Throttle Position
Sensor Circuit Checks) ........................................ 333
ALL
MAIN POWER SUPPLY AND GROUND CIRCUIT . 340
Wiring Diagram — AT — MAIN ............................ 340
Diagnostic Procedure ........................................... 341
VEHICLE SPEED SENSOR - A/T (REVOLUTION
SENSOR) ................................................................ 343
Description ........................................................... 343
Wiring Diagram — AT — VSSAT ......................... 345
Diagnostic Procedure ........................................... 346
DTC VEHICLE SPEED SENSOR MTR .................. 348
Description ........................................................... 348
Wiring Diagram — AT — VSSMTR ...................... 350
Diagnostic Procedure ........................................... 351
ACCELE RATOR PEDAL POSITION (APP) SEN-
SOR ........................................................................ 352
Description ........................................................... 352Wiring Diagram — AT — TPS ..............................354
Diagnostic Procedure ...........................................355
SHIFT SOLENOID VALVE A ..................................357
Description ............................................................357
Wiring Diagram — AT — SSV/A ...........................359
Diagnostic Procedure ...........................................360
Component Inspection ..........................................360
SHIFT SOLENOID VALVE B ..................................362
Description ............................................................362
Wiring Diagram — AT — SSV/B ...........................364
Diagnostic Procedure ...........................................365
Component Inspection ..........................................365
OVERRUN CLUTCH SOLENOID VALVE ...............367
Description ............................................................367
Wiring Diagram — AT — OVRCSV ......................369
Diagnostic Procedure ...........................................370
Component Inspection ..........................................371
TORQUE CONVERTER CLUTCH SOLENOID
VALVE .....................................................................372
Description ............................................................372
Wiring Diagram — AT — TCV ..............................374
Diagnostic Procedure ...........................................375
Component Inspection ..........................................375
BATT/FLUID TEMP SEN (A/T FLUID TEMP SEN-
SOR CIRCUIT AND TCM POWER SOURCE) .......377
Description ............................................................377
Wiring Diagram — AT — BA/FTS .........................379
Diagnostic Procedure ...........................................380
Component Inspection ..........................................382
ENGINE SPEED SIGNAL .......................................383
Description ............................................................383
Wiring Diagram — AT — ENGSS .........................385
Diagnostic Procedure ...........................................386
LINE PRESSURE SOLENOID VALVE ...................388
Description ............................................................388
Wiring Diagram — AT — LPSV ............................390
Diagnostic Procedure ...........................................391
Component Inspection ..........................................393
CAN COMMUNICATION LINE ...............................395
Description ............................................................395
On Board Diagnosis Logic ....................................395
Self-Diagnosis Code Confirmation Procedure ......395
Wiring Diagram — AT — CAN ..............................396
Diagnostic Procedure ...........................................397
A/T SHIFT LOCK SYSTEM ....................................398
Description ............................................................398
Shift Lock System Electrical Parts Location .........398
Wiring Diagram — SHIFT — ................................399
Diagnostic Procedure ...........................................400
KEY INTERLOCK CABLE ......................................404
Components .........................................................404
Removal ...............................................................404
Installation ............................................................405
ON-VEHICLE SERVICE ..........................................406
Control Valve Assembly and Accumulators ..........406
Control Cable Adjustment .....................................408
Park/Neutral Position (PNP) Switch Adjustment ..408
Differential Side Oil Seal Replacement ................409
Revolution Sensor Replacement ..........................409

AT-8
PRECAUTIONS
●Internal failure of stator roller clutch.
●Heavy clutch debris due to overheating (blue converter).
●Steel particles or clutch lining material found in fluid filter or on magnet when no internal parts in unit are
worn or damaged — indicates that lining material came from converter.
The torque converter should not be replaced if:
●The fluid has an odor, is discolored, and there is no evidence of metal or clutch facing particles.
●The threads in one or more of the converter bolt holes are damaged.
●Transaxle failure did not display evidence of damaged or worn internal parts, steel particles or clutch plate
lining material in unit and inside the fluid filter.
●Vehicle has been exposed to high mileage (only). The exception may be where the torque converter
clutch dampener plate lining has seen excess wear by vehicles operated in heavy and/or constant traffic,
such as taxi, delivery or police use.
EURO-OBD SELF-DIAGNOSIS — EURO-OBD —
●A/T self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the O/D OFF indicator lamp or the malfunction indicator (MI). Refer to the table on
AT- 4 2 , "
SELF-DIAGNOSTIC RESULT TEST MODE" 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 AT- 3 9 , "
HOW TO ERASE DTC" to complete the repair and avoid
unnecessary blinking of the MI.
●The following self-diagnostic items can be detected using ECM self-diagnostic results mode* only when
the O/D OFF indicator lamp does not indicate any malfunctions.
–PNP switch
–A/T 1st, 2nd, 3rd, or 4th gear function
*: For details of EURO-OBD, refer to AT-37, "
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION" .
●Certain systems and components, especially those related to EURO-OBD, may use a new style
slide-locking type harness connector.
For description and how to disconnect, refer to EL-7, "HARNESS CONNECTOR".
Wiring Diagrams and Trouble DiagnosisECS007N9
When you read wiring diagrams, refer to the following:
●GI-12, "How to Read Wiring Diagrams".
●EL-11, "POWER SUPPLY ROUTING".
When you perform trouble diagnosis, refer to the following:
●GI-22, "How to Perform Efficient Diagnosis for an Electrical Incident".
●GI-32, "How to Follow Trouble Diagnosis".

OVERALL SYSTEM
AT-15
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MA
B
AT
Circuit DiagramECS007NF
YAT 3 5 3

CAN COMMUNICATION
AT-109
[EURO-OBD]
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AT
CAN COMMUNICATIONPFP:23710
System DescriptionECS007O2
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitECS007O3
×:Applicable
TYPE1
System diagram
Input/output signal chart
T: Transmit R: Receive Body type Sedan/ 5DH/B/ 3DH/B
Axle2WD
Engine QG18DE QG15DE/QG18DE
Transmission A/T M/T
Brake controlABS
CAN communication unit
ECM××
TCM×
Smart entrance control unit××
Data link connector××
Combination meter××
CAN communication type AT-109, "
TYPE1"AT-110, "TYPE 2"
SEL825Y
Signals ECM TCMSmart entrance
control unitCombination meter
Engine speed signal T R
Brake switch signal R T
Rear window defogger signal R T
Heater fan switch signal R T
Air conditioner switch signal R T
MI signal T R
Current gear position signal T R
Engine coolant temperature signal T R
Fuel consumption signal T R

AT-110
[EURO-OBD]
CAN COMMUNICATION
TYPE 2
System diagram
Input/output signal chart
T: Transmit R: Receive Vehicle speed signal R T
Seat belt reminder signalRT
Headlamp switch signalTR
Flashing indicator signalTR
Engine cooling fan speed signal T R
Child lock indicator signalTR
Door switches state signalTR
A/C compressor signal T R
Accelerator pedal position signal T R
Output shaft revolution signal R T
OD OFF switch signal R T
OD OFF indicator signal T R
A/T self-diagnosis signal R TSignals ECM TCMSmart entrance
control unitCombination meter
SEL826Y
Signals ECMSmart entrance control
unitCombination meter
Engine speed signal T R
Rear window defogger signal R T
Heater fan switch signal R T
Air conditioner switch signal R T
MI signal T R
Engine coolant temperature signal T R
Fuel consumption signal T R
Vehicle speed signal R T
Seat belt reminder signal R T
Headlamp switch signal T R
Flashing indicator signal T R
Engine cooling fan speed signal T R
Child lock indicator signal T R
Door switches state signal T R
A/C compressor signal T R

DTC P0705 PARK/NEUTRAL POSITION (PNP) SWITCH
AT-113
[EURO-OBD]
D
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AT
Wiring Diagram — AT — PNP/SWECS007O5
YAT 3 5 5