2007 NISSAN LATIO wiring

EC-6Revision: June 20062007 Versa On Board Diagnosis Logic ....................................485
Diagnostic Procedure ...........................................485
DTC P1715 INPUT SPEED SENSOR (PRIMARY
SPEED SENSOR) ...................................................486
Description ............................................................486
CONSULT-II Reference Value in Data Monitor Mode
.486
On Board Diagnosis Logic ....................................486
DTC Confirmation Procedure ...............................486
Diagnostic Procedure ...........................................487
DTC P1805 BRAKE SWITCH .................................488
Description ............................................................488
CONSULT-II Reference Value in Data Monitor Mode
.488
On Board Diagnosis Logic ....................................488
DTC Confirmation Procedure ...............................488
Wiring Diagram .....................................................489
Diagnostic Procedure ...........................................490
Component Inspection ..........................................492
DTC P2100, P2103 THROTTLE CONTROL MOTOR
RELAY .....................................................................493
Component Description ........................................493
CONSULT-II Reference Value in Data Monitor Mode
.493
On Board Diagnosis Logic ....................................493
DTC Confirmation Procedure ...............................493
Wiring Diagram .....................................................495
Diagnostic Procedure ...........................................496
DTC P2101 ELECTRIC THROTTLE CONTROL
FUNCTION ..............................................................499
Description ............................................................499
On Board Diagnosis Logic ....................................499
DTC Confirmation Procedure ...............................499
Wiring Diagram .....................................................500
Diagnostic Procedure ...........................................501
Component Inspection ..........................................505
Removal and Installation ......................................505
DTC P2118 THROTTLE CONTROL MOTOR .........506
Component Description ........................................506
On Board Diagnosis Logic ....................................506
DTC Confirmation Procedure ...............................506
Wiring Diagram .....................................................507
Diagnostic Procedure ...........................................508
Component Inspection ..........................................509
Removal and Installation ......................................510
DTC P2119 ELECTRIC THROTTLE CONTROL
ACTUATOR .............................................................511
Component Description ........................................511
On Board Diagnosis Logic ....................................511
DTC Confirmation Procedure ...............................511
Diagnostic Procedure ...........................................512
DTC P2122, P2123 APP SENSOR .........................513
Component Description ........................................513
CONSULT-II Reference Value in Data Monitor Mode
.513
On Board Diagnosis Logic ....................................513
DTC Confirmation Procedure ...............................514
Wiring Diagram .....................................................515
Diagnostic Procedure ...........................................516Component Inspection .......................................... 518
Removal and Installation ....................................... 518
DTC P2127, P2128 APP SENSOR ......................... 519
Component Description ........................................ 519
CONSULT-II Reference Value in Data Monitor Mode
. 519
On Board Diagnosis Logic .................................... 519
DTC Confirmation Procedure ................................ 520
Wiring Diagram ..................................................... 521
Diagnostic Procedure ............................................ 523
Component Inspection .......................................... 525
Removal and Installation ....................................... 525
DTC P2135 TP SENSOR ........................................ 526
Component Description ........................................ 526
CONSULT-II Reference Value in Data Monitor Mode
. 526
On Board Diagnosis Logic .................................... 526
DTC Confirmation Procedure ................................ 527
Wiring Diagram ..................................................... 528
Diagnostic Procedure ............................................ 529
Component Inspection .......................................... 531
Removal and Installation ....................................... 531
DTC P2138 APP SENSOR ...................................... 532
Component Description ........................................ 532
CONSULT-II Reference Value in Data Monitor Mode
. 532
On Board Diagnosis Logic .................................... 532
DTC Confirmation Procedure ................................ 533
Wiring Diagram ..................................................... 534
Diagnostic Procedure ............................................ 536
Component Inspection .......................................... 539
Removal and Installation ....................................... 539
DTC P2A00 A/F SENSOR 1 .................................... 540
Component Description ........................................ 540
CONSULT-II Reference Value in Data Monitor Mode
. 540
On Board Diagnosis Logic .................................... 540
DTC Confirmation Procedure ................................ 541
Wiring Diagram ..................................................... 542
Diagnostic Procedure ............................................ 543
Removal and Installation ....................................... 548
ASCD BRAKE SWITCH .......................................... 549
Component Description ........................................ 549
CONSULT-II Reference Value in Data Monitor Mode
. 549
Wiring Diagram ..................................................... 550
Diagnostic Procedure ............................................ 552
Component Inspection .......................................... 557
ASCD INDICATOR .................................................. 559
Component Description ........................................ 559
CONSULT-II Reference Value in Data Monitor Mode
. 559
Wiring Diagram ..................................................... 560
Diagnostic Procedure ............................................ 561
ELECTRICAL LOAD SIGNAL ................................ 562
CONSULT-II Reference Value in Data Monitor Mode
. 562
Diagnostic Procedure ............................................ 562
FUEL INJECTOR ..................................................... 564

EC-7
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Revision: June 20062007 Versa Component Description ........................................ 564
CONSULT-II Reference Value in Data Monitor Mode
. 564
Wiring Diagram .................................................... 565
Diagnostic Procedure ........................................... 566
Component Inspection ......................................... 569
Removal and Installation ...................................... 569
FUEL PUMP ........................................................... 570
Description ........................................................... 570
CONSULT-II Reference Value in Data Monitor Mode
. 570
Wiring Diagram .................................................... 571
Diagnostic Procedure ........................................... 572
Component Inspection ......................................... 575
Removal and Installation ...................................... 575
IGNITION SIGNAL .................................................. 576
Component Description ........................................ 576
Wiring Diagram .................................................... 577
Diagnostic Procedure ........................................... 580
Component Inspection ......................................... 584
Removal and Installation ...................................... 585REFRIGERANT PRESSURE SENSOR ..................586
Component Description ........................................586
Wiring Diagram .....................................................587
Diagnostic Procedure ...........................................588
Removal and Installation ......................................591
MIL AND DATA LINK CONNECTOR ......................592
Wiring Diagram .....................................................592
SERVICE DATA AND SPECIFICATIONS (SDS) ....594
Fuel Pressure .......................................................594
Idle Speed and Ignition Timing .............................594
Calculated Load Value ..........................................594
Mass Air Flow Sensor ...........................................594
Intake Air Temperature Sensor .............................594
Engine Coolant Temperature Sensor ...................594
Air Fuel Ratio (A/F) Sensor 1 Heater ....................594
Heated Oxygen sensor 2 Heater ..........................594
Crankshaft Position Sensor (POS) .......................594
Camshaft Position Sensor (PHASE) ....................595
Throttle Control Motor ...........................................595
Fuel Injector ..........................................................595
Fuel Pump ............................................................595

EC-16Revision: June 2006
PRECAUTIONS
2007 Versa
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
UBS00QB3
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WAR NIN G:

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 per-
formed by an authorized NISSAN/INFINITI dealer.

Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
Precautions for Procedures without Cowl Top CoverUBS00RCH
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc.
On Board Diagnostic (OBD) System of Engine and A/T, CVTUBS00QB4
The ECM has an on board diagnostic system. It will light up the malfunction indicator lamp (MIL) to warn the
driver of a malfunction causing emission deterioration.
CAUTION:

Be sure to turn the ignition switch OFF and disconnect the battery ground cable before any repair
or inspection work. The open/short circuit of related switches, sensors, solenoid valves, etc. will
cause the MIL to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MIL to light up due to the open circuit. (Be sure the connector is free from water, grease,
dirt, bent terminals, etc.)

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 PG-68, "
HAR-
NESS CONNECTOR" .

Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the MIL to light up due to the short circuit.

Be sure to connect rubber tubes properly after work. A misconnected or disconnected rubber tube
may cause the MIL to light up due to the malfunction of the fuel injection system, etc.

Be sure to erase the unnecessary malfunction information (repairs completed) from the ECM and
TCM (Transmission control module) before returning the vehicle to the customer.
PIIB3706J

EC-30Revision: June 2006
CAN COMMUNICATION
2007 Versa
CAN COMMUNICATIONPFP:23710
System DescriptionUBS00PJX
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.
Refer to LAN-47, "
CAN System Specification Chart" , about CAN communication for detail.

EC-70Revision: June 2006
BASIC SERVICE PROCEDURE
2007 Versa
BASIC SERVICE PROCEDUREPFP:00018
Basic InspectionUBS00QBK
1. INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for
scheduled maintenance.
2. Open engine hood and check the following:
–Harness connectors for improper connections
–Wiring harness for improper connections, pinches and cut
–Vacuum hoses for splits, kinks and improper connections
–Hoses and ducts for leaks
–Air cleaner clogging
–Gasket
3. Confirm that electrical or mechanical loads are not applied.
–Headlamp switch is OFF.
–Air conditioner switch is OFF. (Models with A/C)
–Rear window defogger switch is OFF.
–Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature
indicator points the middle of gauge.
Ensure engine stays below 1,000 rpm.
5. Run engine at about 2,000 rpm for about 2 minutes under no
load.
6. Make sure that no DTC is displayed with CONSULT-II or GST.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
SEF 9 83 U
SEF 9 76 U
SEF 9 77 U

TROUBLE DIAGNOSIS
EC-83
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Revision: June 20062007 Versa
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionUBS00PKE
INTRODUCTION
The engine has an ECM to control major systems such as fuel con-
trol, ignition control, idle air control system, etc. The ECM accepts
input signals from sensors and instantly drives actuators. It is essen-
tial that both input and output signals are proper and stable. At the
same time, it is important that there are no malfunctions such as vac-
uum leaks, fouled spark plugs, or other malfunctions with the engine.
It is much more difficult to diagnose an incident that occurs intermit-
tently rather than continuously. Most intermittent incidents are
caused by poor electric connections or improper wiring. In this case,
careful checking of suspected circuits may help prevent the replace-
ment of good parts.
A visual check only may not find the cause of the incidents. A road
test with CONSULT-II (or GST) or a circuit tester connected should
be performed. Follow the Work Flow on EC-84, "
WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such incidents, especially
intermittent ones. Find out what symptoms are present and under
what conditions they occur. A Diagnostic Worksheet like the example
on EC-88, "
Worksheet Sample" should be used.
Start your diagnosis by looking for conventional malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
MEF036D
SEF 2 33 G
SEF 2 34 G

EC-144Revision: June 2006
POWER SUPPLY AND GROUND CIRCUIT
2007 Versa
POWER SUPPLY AND GROUND CIRCUITPFP:24110
Wiring DiagramUBS00PKX
BBWA2625E

EC-146Revision: June 2006
POWER SUPPLY AND GROUND CIRCUIT
2007 Versa
4. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body.
Refer to EC-150, "
Ground Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Repair or replace ground connections.
5. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 10, 11, 108 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F8, E8

Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E
Continuity should exist.