CVT-128
< SERVICE INFORMATION >[RE0F08B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005397955
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
On Board Diagn
osis LogicINFOID:0000000005397956
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1745” with CONSULT-III is detected when TCM detects the unexpected line pres-
sure.
Possible CauseINFOID:0000000005397957
TCM
DTC Confirmation ProcedureINFOID:0000000005397958
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (cool down the fluid)
3. If DTC is detected, go to CVT-128, "
Diagnosis Procedure" .
Diagnosis ProcedureINFOID:0000000005397959
1.CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
3. Erase self-diagnostic results. Refer to CVT-27, "
OBD-II Diagnostic Trouble Code (DTC)".
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)" .
Is the
“P1745” displayed?
YES >> Replace TCM. Refer to CVT-159, "Removal and Installation" .
NO >> INSPECTION END
Revision: January 20102010 Versa
P1777 STEP MOTORCVT-129
< SERVICE INFORMATION > [RE0F08B]
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P1777 STEP MOTOR
DescriptionINFOID:0000000005397960
• The step motor is included in the control valve assembly.
• The step motor changes the step with turning 4 coils ON/OF F according to the signal from TCM. As a result,
the flow of line pressure to primary pu lley is changed and pulley ratio is controlled
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397961
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397962
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1777” with CONSULT-III is detected under the following conditions.
- When operating step motor ON and OFF, there is no proper change in the voltage of TCM terminal which
corresponds to it.
Possible CauseINFOID:0000000005397963
• Step motor
• Harness or connectors(Step motor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397964
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Drive vehicle for at least 5 consecutive seconds.
3. If DTC is detected, go to CVT-131, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name ConditionDisplay value (Approx.)
STM STEP
During driving(−
20) - (+180) step
SMCOIL A
Changes on⇔off.
SMCOIL B
SMCOIL C
SMCOIL D
Revision: January 20102010 Versa
P1778 STEP MOTORCVT-133
< SERVICE INFORMATION > [RE0F08B]
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P1778 STEP MOTOR
DescriptionINFOID:0000000005397968
• The step motor is included in the control valve assembly.
• The step motor's 4 aspects of ON/OFF change according to the signal from TCM. As a result, the flow of line pressure to primary pulley is changed and pulley ratio is controlled.
• This diagnosis item is detected when electrical system is OK, but mechanical system is NG.
• This diagnosis item is detected when the state of the changing the speed mechanism in unit does not oper- ate normally.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397969
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397970
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1778” with CONSULT-III is detected under the following conditions.
- When not changing the pulley ratio according to the instruction of TCM.
Possible CauseINFOID:0000000005397971
Step motor
DTC Confirmation ProcedureINFOID:0000000005397972
CAUTION:
• Always drive vehicle at a safe speed.
• Before starting “DTC Confirmation Procedure”, confirm “Hi” or “Mid” or “Low” fixation by “PRI
SPEED” and “VEHICLE SPEED” on “DATA MONITOR MODE”.
• If hi-geared fixation occurred, go to CVT-134, "
Diagnosis Procedure".
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
4. Start engine and maintain the following conditions for at least 30 consecutive seconds. TEST START FROM 0 km/h (0 MPH)
CONSTANT ACCELERATION: Keep 30 sec or more
VEHICLE SPEED: 10 km/h (6 MPH) or more
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
ENG SPEED: 450 rpm or more
5. If DTC is detected, go to CVT-134, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
STM STEP During driving(−
20) - (+180) step
GEAR RATIO 2.56 - 0.43
Revision: January 20102010 Versa
SERVICE DATA AND SPECIFICATIONS (SDS)CVT-177
< SERVICE INFORMATION > [RE0F08B]
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Solenoid ValvesINFOID:0000000005398018
CVT Fluid Temperature SensorINFOID:0000000005398019
Primary Speed SensorINFOID:0000000005398020
Secondary Speed SensorINFOID:0000000005398021
Removal and InstallationINFOID:0000000005398022
Name Resistance (Approx.) Terminal
secondary pressure solenoid valve 3 - 9 Ω3
Line pressure solenoid valve 2
Torque converter clutch solenoid valve 12
Lock-up select solenoid valve 6 - 19Ω 13
NameCondition CONSULT-III “DATA MONI TOR” (Approx.) Resistance (Approx.)
AT F T E M P S E N 20
°C (68 °F) 2.0 V 6.5 kΩ
80 °C (176 °F) 1.0 V 0.9 kΩ
Name ConditionData (Approx.)
Primary speed sensor When driving [“L” position, 20 km/h (12 MPH)]. 1250 Hz
NameConditionData (Approx.)
Secondary speed sensor When driving [“D” position, 20 km/h (12 MPH)]. 570 Hz
Distance between end of converter housing and torque converter 14.4 mm (0.57 in)
Revision: January 20102010 Versa
EC-1
ENGINE
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CONTENTS
ENGINE CONTROL SYSTEM
HR16DE
BASIC INSPECTION ....... ............................
15
DIAGNOSIS AND REPAIR WORK FLOW .... ....15
Work Flow ........................................................... ....15
Diagnostic Work Sheet ............................................18
INSPECTION AND ADJUSTMENT ....................20
BASIC INSPECTION .................................................20
BASIC INSPECTION : Spec ial Repair Require-
ment .................................................................... ....
20
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT .................................................... ....
23
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Description ................................
23
ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement .....
23
IDLE SPEED .......................................................... ....24
IDLE SPEED : Description ........................ ..............24
IDLE SPEED : Special R epair Requirement ...........24
IGNITION TIMING .................................................. ....24
IGNITION TIMING : Description ..............................24
IGNITION TIMING : Special Repair Requirement ....24
VIN REGISTRATION ............................................. ....24
VIN REGISTRATION : Description .........................24
VIN REGISTRATION : Special Repair Require-
ment ........................................................................
25
ACCELERATOR PEDAL RELEASED POSITION
LEARNING ............................................................ ....
25
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Description .........................................
25
ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Special Repair Requirement ..............
25
THROTTLE VALVE CLOSED POSITION LEARN-
ING ......................................................................... ....
25
THROTTLE VALVE CLOSED POSITION
LEARNING : Description .........................................
25
THROTTLE VALVE CLOSED POSITION
LEARNING : Special Repair Requirement ..............
25
IDLE AIR VOLUME LEARNING ............................ ....25
IDLE AIR VOLUME LEARNING : Description .........25
IDLE AIR VOLUME LEARNI NG : Special Repair
Requirement ........................................................ ....
26
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR ................................................................... ....
27
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Description ................................................
27
MIXTURE RATIO SELF-LEARNING VALUE
CLEAR : Special Repair Requirement .....................
27
FUNCTION DIAGNOSIS ..............................29
ENGINE CONTRO L SYSTEM ..........................29
System Diagram ................................................. ....29
System Description ..................................................30
Component Parts Location ....................................30
Component Description ...........................................34
MULTIPORT FUEL INJECTION SYSTEM .......36
System Diagram .....................................................36
System Description ..................................................36
Component Parts Location ....................................39
Component Description ...........................................43
ELECTRIC IGNITION SYSTEM ........................45
System Diagram .....................................................45
System Description ..................................................45
Component Parts Location ....................................46
Component Description ...........................................50
AIR CONDITIONING CUT CONTROL ..............52
System Diagram ......................................................52
System Description ..................................................52
Component Parts Location ....................................53
Component Description ...........................................57
Revision: January 20102010 Versa
EC-2
CAN COMMUNICATION ...................................59
System Description .................................................59
COOLING FAN CONTROL ...............................60
System Diagram .................................................. ...60
System Description .................................................60
Component Parts Location ...................................62
Component Description ..........................................66
EVAPORATIVE EMISSION SYSTEM ...............68
System Diagram .................................................. ...68
System Description .................................................68
Component Parts Location ...................................72
Component Description .........................................76
INTAKE VALVE TIMING CONTROL .................78
System Diagram .................................................. ...78
System Description .................................................78
Component Parts Location ...................................79
Component Description ..........................................83
ON BOARD DIAGNOSTIC (OBD) SYSTEM .....84
Diagnosis Description .......................................... ...84
CONSULT-III Function ...........................................98
Diagnosis Tool Function ......................................104
COMPONENT DIAGNOSIS .......................106
TROUBLE DIAGNOSIS - SPECIFICATION
VALUE ............................................................ .
106
Description ........................................................... ..106
Component Function Check ..................................106
Diagnosis Procedure .............................................107
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT ........................................................
114
Description ........................................................... ..114
Diagnosis Procedure .............................................114
POWER SUPPLY AND GROUND CIRCUIT ...115
Wiring Diagram .................................................... ..115
Diagnosis Procedure .............................................115
Ground Inspection .................................................119
U0101 CAN COMM CIRCUIT ..........................120
Description ........................................................... ..120
DTC Logic ..............................................................120
Wiring Diagram ......................................................121
Diagnosis Procedure .............................................121
U0140 CAN COMM CIRCUIT ..........................122
Description ........................................................... ..122
DTC Logic ..............................................................122
Wiring Diagram ......................................................123
Diagnosis Procedure .............................................123
U1001 CAN COMM CIRCUIT ..........................124
Description ........................................................... ..124
DTC Logic ..............................................................124
Wiring Diagram ......................................................125
Diagnosis Procedure .............................................125
P0011 IVT CONTROL ......................................126
DTC Logic ............................................................ .126
Diagnosis Procedure .............................................127
Component Inspection ..........................................128
P0031, P0032 A/F SENSOR 1 HEATER ..........130
Description ........................................................... .130
DTC Logic .............................................................130
Wiring Diagram .....................................................131
Diagnosis Procedure .............................................131
Component Inspection ..........................................133
P0037, P0038 HO2S2 HEATER .......................134
Description ........................................................... .134
DTC Logic .............................................................134
Wiring Diagram .....................................................135
Diagnosis Procedure .............................................135
Component Inspection ..........................................137
P0075 IVT CONTROL SOLENOID VALVE ......138
Description ........................................................... .138
DTC Logic .............................................................138
Wiring Diagram .....................................................139
Diagnosis Procedure .............................................139
Component Inspection ..........................................140
P0101 MAF SENSOR .......................................142
Description ........................................................... .142
DTC Logic .............................................................142
Component Function Check .................................143
Wiring Diagram .....................................................145
Diagnosis Procedure .............................................145
Component Inspection ..........................................147
P0102, P0103 MAF SENSOR ..........................150
Description ........................................................... .150
DTC Logic .............................................................150
Wiring Diagram .....................................................151
Diagnosis Procedure .............................................151
Component Inspection ..........................................153
P0112, P0113 IAT SENSOR ............................156
Description ............................................................156
DTC Logic .............................................................156
Wiring Diagram .....................................................157
Diagnosis Procedure .............................................157
Component Inspection ..........................................158
P0116 ECT SENSOR .......................................159
Description ............................................................159
DTC Logic .............................................................159
Diagnosis Procedure .............................................160
Component Inspection ..........................................160
P0117, P0118 ECT SENSOR ...........................161
Description ............................................................161
DTC Logic .............................................................161
Wiring Diagram .....................................................162
Diagnosis Procedure .............................................162
Component Inspection ..........................................163
Revision: January 20102010 Versa
EC-4
DTC Logic ..............................................................257
Wiring Diagram ......................................................258
Diagnosis Procedure .............................................259
Component Inspection ...........................................261
P0340 CMP SENSOR (PHASE) ......................262
Description ........................................................... ..262
DTC Logic ..............................................................262
Wiring Diagram ......................................................264
Diagnosis Procedure .............................................264
Component Inspection ...........................................266
P0420 THREE WAY CATALYST FUNCTION .267
DTC Logic ..............................................................267
Component Function Check ..................................268
Diagnosis Procedure .............................................269
P0441 EVAP CONTROL SYSTEM ..................272
DTC Logic ............................................................ ..272
Component Function Check ..................................273
Diagnosis Procedure .............................................274
Component Inspection (Drain filter) .......................277
P0442 EVAP CONTROL SYSTEM ..................278
DTC Logic ............................................................ ..278
Diagnosis Procedure .............................................279
Component Inspection (Fuel filler cap) ..................283
Component Inspection (Drain filter) .......................283
P0443 EVAP CANISTER PURGE VOLUME
CONTROL SOLENOID VALVE .......................
285
Description ........................................................... ..285
DTC Logic ..............................................................285
Wiring Diagram ......................................................287
Diagnosis Procedure .............................................287
Component Inspection ...........................................290
P0444, P0445 EVAP CANISTER PURGE
VOLUME CONTROL SOLENOID VALVE ......
291
Description ........................................................... ..291
DTC Logic ..............................................................291
Wiring Diagram ......................................................292
Diagnosis Procedure .............................................292
Component Inspection ...........................................294
P0447 EVAP CANISTER VENT CONTROL
VALVE .............................................................
295
Description ........................................................... ..295
DTC Logic ..............................................................295
Wiring Diagram ......................................................296
Diagnosis Procedure .............................................296
Component Inspection ...........................................298
P0448 EVAP CANISTER VENT CONTROL
VALVE .............................................................
300
Description ........................................................... ..300
DTC Logic ..............................................................300
Wiring Diagram ......................................................302
Diagnosis Procedure .............................................302
Component Inspection ...........................................304
P0451 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ................................................
306
Description ........................................................... .306
DTC Logic .............................................................306
Diagnosis Procedure .............................................306
Component Inspection ..........................................308
P0452 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ................................................
309
Description ........................................................... .309
DTC Logic .............................................................309
Wiring Diagram .....................................................311
Diagnosis Procedure .............................................311
Component Inspection ..........................................314
P0453 EVAP CONTROL SYSTEM PRES-
SURE SENSOR ................................................
316
Description ........................................................... .316
DTC Logic .............................................................316
Wiring Diagram .....................................................318
Diagnosis Procedure .............................................318
Component Inspection ..........................................322
P0455 EVAP CONTROL SYSTEM ..................323
DTC Logic .............................................................323
Diagnosis Procedure .............................................324
Component Inspection (Fuel filler cap) .................327
Component Inspection (Drain filter) ......................328
P0456 EVAP CONTROL SYSTEM ..................329
DTC Logic .............................................................329
Component Function Check .................................331
Diagnosis Procedure .............................................331
Component Inspection (Fuel filler cap) .................334
Component Inspection (Drain filter) ......................335
P0460 FUEL LEVEL SENSOR .........................336
Description ........................................................... .336
DTC Logic .............................................................336
Diagnosis Procedure .............................................336
P0461 FUEL LEVEL SENSOR .........................337
Description ........................................................... .337
DTC Logic .............................................................337
Component Function Check .................................337
Diagnosis Procedure .............................................338
P0462, P0463 FUEL LEVEL SENSOR ............339
Description ........................................................... .339
DTC Logic .............................................................339
Diagnosis Procedure .............................................339
P0500 VSS ........................................................341
Description ........................................................... .341
DTC Logic .............................................................341
Component Function Check .................................342
Diagnosis Procedure .............................................342
P0506 ISC SYSTEM .........................................343
Description ........................................................... .343
DTC Logic .............................................................343
Revision: January 20102010 Versa
EC-6
Wiring Diagram ......................................................402
Diagnosis Procedure .............................................402
Component Inspection ...........................................404
Special Repair Requirement ..................................404
P2138 APP SENSOR ..................................... .405
Description ........................................................... ..405
DTC Logic ..............................................................405
Wiring Diagram ......................................................406
Diagnosis Procedure .............................................406
Component Inspection ...........................................409
Special Repair Requirement ..................................409
P2A00 A/F SENSOR 1 ................................... .410
Description ........................................................... ..410
DTC Logic ..............................................................410
Wiring Diagram ......................................................411
Diagnosis Procedure .............................................412
COOLING FAN ................................................415
Description ........................................................... ..415
Component Function Check ..................................415
Wiring Diagram ......................................................416
Diagnosis Procedure .............................................417
Component Inspection ...........................................419
ELECTRICAL LOAD SIGNAL .........................421
Description ........................................................... ..421
Component Function Check ..................................421
Diagnosis Procedure .............................................421
FUEL INJECTOR .............................................423
Description ........................................................... ..423
Component Function Check ..................................423
Wiring Diagram ......................................................424
Diagnosis Procedure .............................................424
Component Inspection ...........................................425
FUEL PUMP .....................................................427
Description ........................................................... ..427
Component Function Check ..................................427
Wiring Diagram ......................................................428
Diagnosis Procedure .............................................428
Component Inspection ...........................................430
IGNITION SIGNAL ...........................................432
Description ........................................................... ..432
Component Function Check ..................................432
Wiring Diagram ......................................................433
Diagnosis Procedure .............................................434
Component Inspection (Ignition Coil with Power
Transistor) .............................................................
437
Component Inspection (Condenser-2) ..................438
MALFUNCTION INDICATOR LAMP ...............439
Description ........................................................... ..439
Component Function Check ..................................439
Wiring Diagram ......................................................440
Diagnosis Procedure .............................................441
ON BOARD REFUELING VAPOR RECOV-
ERY (ORVR) .....................................................
443
Description ........................................................... .443
Component Function Check .................................443
Diagnosis Procedure .............................................443
Component Inspection (Refueling EVAP vapor cut
valve) ................................................................... .
446
Component Inspection (Drain filter) ......................448
POSITIVE CRANKCASE VENTILATION .........449
Description ........................................................... .449
Component Inspection ..........................................449
REFRIGERANT PRESSURE SENSOR ...........450
Description ........................................................... .450
Component Function Check .................................450
Wiring Diagram .....................................................451
Diagnosis Procedure .............................................451
ECU DIAGNOSIS ......................................454
ECM ................................................................ ..454
Reference Value .................................................. .454
Wiring Diagram — ENGINE CONTROL SYSTEM
— ..........................................................................
464
Fail Safe ...............................................................465
DTC Inspection Priority Chart .............................467
DTC Index ............................................................468
How to Set SRT Code .......................................471
How to Erase Permanent DTC .............................473
Test Value and Test Limit .....................................477
SYMPTOM DIAGNOSIS ...........................484
ENGINE CONTROL SYSTEM SYMPTOMS .. ..484
Symptom Table .................................................... .484
NORMAL OPERATING CONDITION ...............488
Description ........................................................... .488
PRECAUTION ...........................................489
PRECAUTIONS .............................................. ..489
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" .............................................................. .
489
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ................................
489
Precaution for Procedure without Cowl Top Cover .490
On Board Diagnosis (OBD) System of Engine and
A/T ........................................................................
490
General Precautions .............................................490
PREPARATION .........................................494
PREPARATION .............................................. ..494
Special Service Tools .......................................... .494
Commercial Service Tools ....................................494
ON-VEHICLE MAINTENANCE .................496
Revision: January 20102010 Versa