2007 NISSAN LATIO brake control system

CVT SHIFT LOCK SYSTEM
CVT-199
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CVT
Revision: June 20062007 Versa
Diagnostic ProcedureUCS006KN
SYMPTOM 1:

Selector lever cannot be moved from “P” position with ignition switch in ON position and brake
pedal depressed.

Selector lever can be moved from “P” position with ignition key in ON position and brake pedal
released.

Selector lever can be moved from “P” position when ignition switch is removed from key cylinder.
SYMPTOM 2:

Ignition key cannot be removed when selector lever is set to “P” position.

Ignition key can be removed when selector lever is set to any position except “P” position.
1. CHECK KEY INTERLOCK CABLE
Check key interlock cable for damage.
OK or NG
OK >> GO TO 2.
NG >> Repair key interlock cable. Refer to AT-239, "
Removal and Installation" .
2. CHECK CVT POSITION
Check CVT position. Refer to CVT-196, "
Checking of CVT Position" .
OK or NG
OK >> GO TO 3.
NG >> Adjust control cable. Refer to CVT-195, "
Adjustment of CVT Position" .
3. CHECK SHIFT LOCK SOLENOID AND PARK POSITION SWITCH
1. Turn ignition switch ON. (Do not start engine.)
2. Selector lever is set in “P” position.
3. Check operation sound.
OK or NG
OK >>INSPECTION END
NG - 1 >> With intelligent key: GO TO 4.
NG - 2 >> Without intelligent key: GO TO 5.
4. CHECK POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between CVT device harness connector terminal
5 and ground.
OK or NG
OK >> GO TO 8.
NG >> GO TO 6.
Condition Brake pedal Operation sound
When ignition switch is turned to ON position and selector lever is set in
“P” position.Depressed Yes
Released No
Voltage:
Brake pedal depressed: Battery voltage
Brake pedal released: 0V
SCIA7934E

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Revision: June 20062007 Versa DTC Confirmation Procedure ............................... 399
Diagnostic Procedure ........................................... 400
DTC P0456 EVAP CONTROL SYSTEM ................ 406
On Board Diagnosis Logic ................................... 406
DTC Confirmation Procedure ............................... 407
Overall Function Check ........................................ 408
Diagnostic Procedure ........................................... 409
DTC P0460 FUEL LEVEL SENSOR ...................... 415
Component Description ........................................ 415
On Board Diagnostic Logic .................................. 415
DTC Confirmation Procedure ............................... 415
Diagnostic Procedure ........................................... 416
Removal and Installation ...................................... 416
DTC P0461 FUEL LEVEL SENSOR ...................... 417
Component Description ........................................ 417
On Board Diagnostic Logic .................................. 417
Overall Function Check ........................................ 417
Diagnostic Procedure ........................................... 418
Removal and Installation ...................................... 418
DTC P0462, P0463 FUEL LEVEL SENSOR .......... 419
Component Description ........................................ 419
On Board Diagnostic Logic .................................. 419
DTC Confirmation Procedure ............................... 419
Diagnostic Procedure ........................................... 420
Removal and Installation ...................................... 420
DTC P0500 VSS ..................................................... 421
Description ........................................................... 421
On Board Diagnosis Logic ................................... 421
DTC Confirmation Procedure ............................... 421
Overall Function Check ........................................ 422
Diagnostic Procedure ........................................... 422
DTC P0506 ISC SYSTEM ....................................... 423
Description ........................................................... 423
On Board Diagnosis Logic ................................... 423
DTC Confirmation Procedure ............................... 423
Diagnostic Procedure ........................................... 424
DTC P0507 ISC SYSTEM ....................................... 425
Description ........................................................... 425
On Board Diagnosis Logic ................................... 425
DTC Confirmation Procedure ............................... 425
Diagnostic Procedure ........................................... 426
DTC P0605 ECM .................................................... 427
Component Description ........................................ 427
On Board Diagnosis Logic ................................... 427
DTC Confirmation Procedure ............................... 427
Diagnostic Procedure ........................................... 428
DTC P0643 SENSOR POWER SUPPLY ................ 430
On Board Diagnosis Logic ................................... 430
DTC Confirmation Procedure ............................... 430
Wiring Diagram .................................................... 431
Diagnostic Procedure ........................................... 433
DTC P0850 PNP SWITCH ...................................... 436
Component Description ........................................ 436
CONSULT-II Reference Value in Data Monitor Mode
. 436
On Board Diagnosis Logic ................................... 436
DTC Confirmation Procedure ............................... 436
Overall Function Check ........................................ 437Wiring Diagram .....................................................438
Diagnostic Procedure ...........................................439
DTC P1148 CLOSED LOOP CONTROL ................442
On Board Diagnosis Logic ....................................442
DTC P1217 ENGINE OVER TEMPERATURE ........443
System Description ...............................................443
CONSULT-II Reference Value in Data Monitor Mode
.444
On Board Diagnosis Logic ....................................445
Overall Function Check ........................................445
Wiring Diagram .....................................................448
Diagnostic Procedure ...........................................450
Main 13 Causes of Overheating ...........................458
Component Inspection ..........................................459
DTC P1225 TP SENSOR ........................................460
Component Description ........................................460
On Board Diagnosis Logic ....................................460
DTC Confirmation Procedure ...............................460
Diagnostic Procedure ...........................................461
Removal and Installation ......................................461
DTC P1226 TP SENSOR ........................................462
Component Description ........................................462
On Board Diagnosis Logic ....................................462
DTC Confirmation Procedure ...............................462
Diagnostic Procedure ...........................................463
Removal and Installation ......................................463
DTC P1421 COLD START CONTROL ...................464
Description ............................................................464
On Board Diagnosis Logic ....................................464
DTC Confirmation Procedure ...............................464
Diagnostic Procedure ...........................................464
DTC P1564 ASCD STEERING SWITCH ................466
Component Description ........................................466
CONSULT-II Reference Value in Data Monitor Mode
.466
On Board Diagnosis Logic ....................................466
DTC Confirmation Procedure ...............................467
Wiring Diagram .....................................................468
Diagnostic Procedure ...........................................469
Component Inspection ..........................................472
DTC P1572 ASCD BRAKE SWITCH ......................473
Component Description ........................................473
CONSULT-II Reference Value in Data Monitor Mode
.473
On Board Diagnosis Logic ....................................473
DTC Confirmation Procedure ...............................474
Wiring Diagram .....................................................475
Diagnostic Procedure ...........................................476
Component Inspection ..........................................481
DTC P1574 ASCD VEHICLE SPEED SENSOR .....483
Component Description ........................................483
On Board Diagnosis Logic ....................................483
DTC Confirmation Procedure ...............................483
Diagnostic Procedure ...........................................484
DTC P1715 INPUT SPEED SENSOR (TURBINE
REVOLUTION SENSOR) ........................................485
Description ............................................................485
CONSULT-II Reference Value in Data Monitor Mode
.485

EC-28Revision: June 2006
AUTOMATIC SPEED CONTROL DEVICE (ASCD)
2007 Versa
AUTOMATIC SPEED CONTROL DEVICE (ASCD)PFP:18930
System DescriptionUBS00QB6
INPUT/OUTPUT SIGNAL CHART
*: This signal is sent to the ECM through CAN communication line.
BASIC ASCD SYSTEM
Refer to Owner's Manual for ASCD operating instructions.
Automatic Speed Control Device (ASCD) allows a driver to keep vehicle at predetermined constant speed
without depressing accelerator pedal. Driver can set vehicle speed in advance between approximately 40 km/
h (25 MPH) and 144 km/h (89 MPH).
ECM controls throttle angle of electric throttle control actuator to regulate engine speed.
Operation status of ASCD is indicated by CRUISE indicator and SET indicator in combination meter. If any
malfunction occurs in ASCD system, it automatically deactivates control.
NOTE:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws.
SET OPERATION
Press MAIN switch. (The CRUISE indicator in combination meter illuminates.)
When vehicle speed reaches a desired speed between approximately 40 km/h (25 MPH) and 144 km/h (89
MPH), press SET/COAST switch. (Then SET indicator in combination meter illuminates.)
ACCELERATE OPERATION
If the RESUME/ACCELERATE switch is depressed during cruise control driving, increase the vehicle speed
until the switch is released or vehicle speed reaches maximum speed controlled by the system.
And then ASCD will keep the new set speed.
CANCEL OPERATION
When any of following conditions exist, cruise operation will be canceled.

CANCEL switch is pressed

More than two switches at ASCD steering switch are pressed at the same time (Set speed will be cleared)

Brake pedal is depressed

Clutch pedal is depressed or gear position is changed to the neutral position (M/T models)

Selector lever is changed to N, P, R position (A/T and CVT models)

Vehicle speed decreased to 13 km/h (8 MPH) lower than the set speed
When the ECM detects any of the following conditions, the ECM will cancel the cruise operation and inform
the driver by blinking indicator lamp.

Engine coolant temperature is slightly higher than the normal operating temperature, CRUISE lamp may
blink slowly.
When the engine coolant temperature decreases to the normal operating temperature, CRUISE lamp will
stop blinking and the cruise operation will be able to work by pressing SET/COAST switch or RESUME/
ACCELERATE switch.

Malfunction for some self-diagnoses regarding ASCD control: SET lamp will blink quickly.
If MAIN switch is turned to OFF during ASCD is activated, all of ASCD operations will be canceled and vehicle
speed memory will be erased.
Sensor Input signal to ECM ECM function Actuator
ASCD brake switch Brake pedal operation
ASCD vehicle speed controlElectric throttle control
actuator Stop lamp switch Brake pedal operation
ASCD clutch switch (M/T models) Clutch pedal operation
ASCD steering switch ASCD steering switch operation
Park/neutral position (PNP) switch Gear position
Combination meter Vehicle speed*
TCM (A/T and CVT models) Powertrain revolution*

EC-50Revision: June 2006
ON BOARD DIAGNOSTIC (OBD) SYSTEM
2007 Versa
ENGINE SPEED SIG P0725 0725 — — 2×AT- 11 3
A/T 1ST GR FNCTN P0731 0731 — — 2×AT- 11 7
A/T 2ND GR FNCTN P0732 0732 — — 2×AT- 1 2 1
A/T 3RD GR FNCTN P0733 0733 — — 2×AT- 1 2 4
A/T 4TH GR FNCTN P0734 0734 — — 2×AT- 1 2 8
TCC SOLENOID/CIRC P0740 0740 — — 2×AT- 1 3 4
A/T TCC S/V FNCTN P0744 0744 — — 2×AT- 1 3 9
(A/T),
CVT-110

(CVT)
L/PRESS SOL/CIRC P0745 0745 — — 2×AT- 1 4 5
PRS CNT SOL/A FCTN P0746 0746 — — 1×CVT-118
SFT SOL A/CIRC P0750 0750 — — 1×AT- 1 5 1
SFT SOL B/CIRC P0755 0755 — — 1×AT- 1 5 6
PRS CNT SOL/B FCTN P0776 0776 — — 2×CVT-121
PRS CNT SOL/B CIRC P0778 0778 — — 2×CVT-124
TR PRS SENS/A CIRC P0840 0840 — — 2×CVT-129
TR PRS SENS/B CIRC P0845 0845 — — 2×CVT-137
P-N POS SW/CIRCUIT P0850 0850 — — 2×EC-436
C L O S E D L O O P - B 1 P 11 4 8 11 4 8 — — 1×EC-442
ENG OVER TEMP P1217 1217 — — 1×EC-443
CTP LEARNING P1225 1225 — — 2 —EC-460
CTP LEARNING P1226 1226 — — 2 —EC-462
COLD START CONTROL P1421 1421 — — 2×EC-464
ASCD SW P1564 1564 — — 1 —EC-466
ASCD BRAKE SW P1572 1572 — — 1 —EC-473
ASCD VHL SPD SEN P1574 1574 — — 1 —EC-483
NATS MALFUNCTIONP1610 -
P16151610 - 1615 — — 2 —BL-212
TP SEN/CIRC A/T P1705 1705 — — 1×CVT-150
IN PULY SPEED P1715 1715 — — 2 —EC-485 (A/T),
EC-486
(CVT)
LU-SLCT SOL/CIRC P1740 1740 — — 2×CVT-158
O/R CLTCH SOL/CIRC P1760 1760 — — 2×AT- 1 6 1
STEP MOTR CIRC P1777 1777 — — 1×CVT-164
STEP MOTR FNC P1778 1778 — — 2×CVT-168
BRAKE SW/CIRCUIT P1805 1805 — — 2 —EC-488
ETC MOT PWR P2100 2100 — — 1×EC-493
ETC FUNCTION/CIRC P2101 2101 — — 1×EC-499
ETC MOT PWR P2103 2103 — — 1×EC-493
ETC MOT P2118 2118 — — 1×EC-506
ETC ACTR P2119 2119 — — 1×EC-511
APP SEN 1/CIRC P2122 2122 — — 1×EC-513
APP SEN 1/CIRC P2123 2123 — — 1×EC-513
APP SEN 2/CIRC P2127 2127 — — 1×EC-519
Items
(CONSULT-II screen terms)DTC*
1
SRT codeTe s t v a l u e /
Test limit
(GST only)TripMIL light-
ing upReference
page CONSULT-II
GST*
2ECM*3

EC-78Revision: June 2006
BASIC SERVICE PROCEDURE
2007 Versa
Throttle Valve Closed Position LearningUBS00QO9
DESCRIPTION
Throttle Valve Closed Position Learning is an operation to learn the fully closed position of the throttle valve by
monitoring the throttle position sensor output signal. It must be performed each time harness connector of
electric throttle control actuator or ECM is disconnected.
OPERATION PROCEDURE
1. Make sure that accelerator pedal is fully released.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
Make sure that throttle valve moves during above 10 seconds by confirming the operating sound.
Idle Air Volume LearningUBS00QOA
DESCRIPTION
Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific
range. It must be performed under any of the following conditions:

Each time electric throttle control actuator or ECM is replaced.

Idle speed or ignition timing is out of specification.
PREPARATION
Before performing Idle Air Volume Learning, make sure that all of the following conditions are satisfied.
Learning will be cancelled if any of the following conditions are missed for even a moment.

Battery voltage: More than 12.9V (At idle)

Engine coolant temperature: 70 - 95°C (158 - 203°F)

Park/neutral position (PNP) switch: ON

Electric load switch: OFF
[Air conditioner (models with A/C), headlamp, rear window defogger]
On vehicles equipped with daytime light systems, if the parking brake is applied before the engine
is started the headlamp will not be illuminated.

Steering wheel: Neutral (Straight-ahead position)

Vehicle speed: Stopped

Transmission: Warmed-up
–Models with CONSULT-II (A/T and CVT models)
 Drive vehicle until “FLUID TEMP SE” in “DATA MONITOR” mode of “A/T” or “CVT” system indicates less
than 0.9V.
–Models without CONSULT-II (A/T and CVT models) and M/T models
 Drive vehicle for 10 minutes.

EC-90Revision: June 2006
TROUBLE DIAGNOSIS
2007 Versa
2
P0031 P0032 Air fuel ratio (A/F) sensor 1 heater

P0037 P0038 Heated oxygen sensor 2 heater

P0075 Intake valve timing control solenoid valve

P0130 P0131 P0132 P0133 P2A00 Air fuel ratio (A/F) sensor 1

P0137 P0138 P0139 Heated oxygen sensor 2

P0441 EVAP control system purge flow monitoring

P0443 P0444 P0445 EVAP canister purge volume control solenoid valve

P0447 P0448 EVAP canister vent control valve

P0451 P0452 P0453 EVAP control system pressure sensor

P1217 Engine over temperature (OVERHEAT)

P1805 Brake switch

P2100 P2103 Throttle control motor relay

P2101 Electric throttle control function

P2118 Throttle control motor
3

P0011 Intake valve timing control

P0171 P0172 Fuel injection system function

P0300 - P0304 Misfire

P0420 Three way catalyst function

P0442 P0456 EVAP control system (SMALL LEAK, VERY SMALL LEAK)

P0455 EVAP control system (GROSS LEAK)

P0506 P0507 Idle speed control system

P0710 P0715 P0720 P0725 P0731 P0732 P0733 P0734 P0740 P0744 P0745 P0746 P0750 P0755 P0776 P0778
P0840 P0845 P1705 P1740 P1760 P1777 P1778 A/T or CVT related sensors, solenoid valves and switches

P1148 Closed loop control

P1421 Cold start control

P1564 ASCD steering switch

P1572 ASCD brake switch

P1574 ASCD vehicle speed sensor

P1715 Turbine revolution sensor (A/T), Primary speed sensor (CVT)

P2119 Electric throttle control actuator Priority Detected items (DTC)

TROUBLE DIAGNOSIS
EC-101
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Revision: June 20062007 Versa
1. Stop lamp switch 2. ASCD brake switch 3. ASCD clutch switch
4. Clutch pedal 5. ASCD steering switch 6. MAIN switch
7. CANCEL switch 8. SET/COAST switch 9. RESUME/ACCELERATOR switch
10. EVAP control system pressure sen-
sor (This illustration is a view from
under vehicle)11. EVAP canister 12. EVAP canister vent control valve
BBIA0728E

TROUBLE DIAGNOSIS
EC-111
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Revision: June 20062007 Versa
73 PIntake valve timing control
solenoid valve[Engine is running]

Warm-up condition

Idle speedBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Warm-up condition

When revving engine up to 2,000 rpm
quickly7 - 10V
74 WSensor power supply
(Refrigerant pressure
sensor)[Ignition switch: ON]Approximately 5V
75 BRSensor power supply
[Crankshaft position sensor
(POS)][Ignition switch: ON]Approximately 5V
76 WEVAP control system pres-
sure sensor power supply[Ignition switch: ON]Approximately 5V
78 OSensor power supply
[Camshaft position sensor
(PHASE)][Ignition switch: ON]Approximately 5V
83 P CAN communication line[Ignition switch: ON]Approximately 1.7 - 2.3V
Output voltage varies with the
communication status.
84 L CAN communication line[Ignition switch: ON]Approximately 2.6 - 3.2V
Output voltage varies with the
communication status.
88 LG DATA link connector[Ignition switch: ON]

CONSULT-II or GST: Disconnected.Approximately 10.5V
93 O Ignition switch[Ignition switch: OFF]0V
[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
94 R ASCD steering switch[Ignition switch: ON]

ASCD steering switch: OFFApproximately 4V
[Ignition switch: ON]

MAIN switch: PressedApproximately 0V
[Ignition switch: ON]

CANCEL switch: PressedApproximately 1V
[Ignition switch: ON]

RESUME/ACCELERATE switch: PressedApproximately 3V
[Ignition switch: ON]

SET/COAST switch: PressedApproximately 2V
95 BSensor ground
(ASCD steering switch)[Engine is running]

Warm-up condition

Idle speedApproximately 0V
99 R Stop lamp switch[Ignition switch: OFF]

Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly depressedBATTERY VOLTAGE
(11 - 14V) TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIA4937J