2006 NISSAN VERSA belt

PRECAUTION
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PRECAUTION PFP:00011
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EKS00I9C
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.
WA RN ING:

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.

COMBINATION METERS
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Combination Meter Harness Connector Terminal LayoutEKS00IAQ
Terminals and Reference Value for Combination MeterEKS00I0A
LKIA0698E
Te r -
minal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
1 L CAN-H — — —
2 P CAN-L — — —
3GVehicle speed signal output
(2-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)] NOTE:
Maximum voltage may be 5 V due to
specifications (connected units).
4SBVehicle speed signal output
(8-pulse)ONSpeedometer operated
[When vehicle speed is approx.
40 km/h (25 MPH)]NOTE:
Maximum voltage may be 12 V due to
specifications (connected units).
5WVehicle speed signal (without
ABS or CVT)ONSpeedometer operated
[When vehicle speed is approx.
20 km/h (12 MPH)]240 Hz
6 BR Fuel level sensor signal (+) — —Refer to DI-23, "
FUEL LEVEL SENSOR
UNIT CHECK" .
8 P O/D OFF switch ONO/D OFF switch pressed 0
O/D OFF switch released Battery voltage
9 Y Seat belt buckle switch LH ONUnfastened (ON) 0
Fastened (OFF) Battery voltage
10 SB Parking Brake switch ONParking brake applied 0
Parking brake released Battery voltage
11 LG Brake fluid level switch ONBrake fluid level low 0
Brake fluid level normal Battery voltage
12 BR Illumination control switch (+) — —Refer to LT-108, "
ILLUMINATION
OPERATION BY LIGHTING SWITCH" .
PKIC0642E
PKIC0643E

DI-12
COMBINATION METERS
Revision: June 20062007 Versa
13 B Illumination control switch (-) — —Refer to LT-108, "ILLUMINATION
OPERATION BY LIGHTING SWITCH" .
17 GWasher fluid level switch
(Canada models)ONWasher fluid level low 0
Washer fluid level normal Battery voltage
21
BGround — — 0 22
23
24 V Fuel level sensor ground (-) ON — 0
26 BVehicle speed sensor ground
(without ABS or CVT)ON — 0
27 G Battery power supply OFF — Battery voltage
28 SB Ignition switch ON or START ON — Battery voltage
29 GR Seat belt buckle switch RH ONUnfastened (ON) 0
Fastened (OFF) Battery voltage
30 G Stop lamp switch ONBrake pedal depressed Battery voltage
Brake pedal released 0
31 V A/T N-range input (with A/T) ONTransmission gear selector lever
in N positionBattery voltage
Transmission gear selector lever
other than N position0
32 W A/T P-range input (with A/T) ONTransmission gear selector lever
in P positionBattery voltage
Transmission gear selector lever
other than P position0
33 Y A/T PN output (with A/T) ONTransmission gear selector lever
in P or N position0
Transmission gear selector lever
other than P or N positionBattery voltage
35 BREngine coolant temperature
signal outputONAt idle [after warming up, approx.
80°C (176°F)]
NOTE:
The waveforms vary depending
on engine coolant temperature.
38 L Generator ONGenerator voltage low 0
Generator voltage normal Battery voltage Te r -
minal
No.Wire
colorItemCondition
Reference value (V)
(Approx.) Ignition
switchOperation or condition
SKIB3651J

COMBINATION METERS
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DATA MONITOR
Display Item List
Display item [Unit]MAIN
SIGNALSSELECTION
FROM MENUContents
SPEED METER [km/h] X XThe value of vehicle speed signal, which is input from ABS
actuator and electric unit (control unit).
SPEED OUTPUT [km/h] X XThe value of vehicle speed signal, which is transmitted to each
unit with CAN communication.
TACHO METER [rpm] X X The value of engine speed signal, which is input from ECM.
W TEMP METER [°C] X XThe value of engine coolant temperature signal, which is input
from ECM.
FUEL METER [lit.] X XThe value, which processes a resistance signal from fuel
gauge.
DISTANCE [km] X XThe value, which is calculated by vehicle speed signal from
ABS actuator and electric unit (control unit), fuel gauge and
fuel consumption signal from ECM.
FUEL W/L [ON/OFF] X X Indicates [ON/OFF] condition of low-fuel warning lamp.
C-ENG W/L [ON/OFF] XIndicates [ON/OFF] condition of malfunction indicator lamp
(MIL).
AIR PRES W/L XIndicates [ON/OFF] condition of low tire pressure warning
lamp.
SEAT BELT W/L X Indicates [ON/OFF] condition of seat belt warning lamp.
BUZZER [ON/OFF] X X Indicates [ON/OFF] condition of buzzer.
DOOR W/L [ON/OFF] X Indicates [ON/OFF] condition of door warning lamp.
HI-BEAM IND [ON/OFF] X Indicates [ON/OFF] condition of high beam indicator lamp.
TURN IND [ON/OFF] X Indicates [ON/OFF] condition of turn indicator.
OIL W/L [ON/OFF] X Indicates [ON/OFF] condition of oil pressure warning lamp.
ABS W/L [ON/OFF] X Indicates [ON/OFF] condition of ABS warning lamp.
BRAKE W/L [ON/OFF] X Indicates [ON/OFF] condition of brake warning lamp.*
KEY G W/L [ON/OFF] X Indicates [ON/OFF] condition of KEY warning lamp (green).
KEY R W/L [ON/OFF] X Indicates [ON/OFF] condition of KEY warning lamp (red).
KEY KNOB W/L [ON/OFF] X Indicates [ON/OFF] condition of LOCK warning lamp.
PNP P SW [ON/OFF] X X Indicates [ON/OFF] condition of inhibitor P switch.
PNP N SW [ON/OFF] X X Indicates [ON/OFF] condition of inhibitor N switch.
O/D OFF SW [ON/OFF] X Indicates [ON/OFF] condition of O/D OFF switch.
BRAKE SW [ON/OFF] X Indicates [ON/OFF] condition of parking brake switch.
P RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T or CVT shift P range indi-
cator.
R RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T or CVT shift R range indi-
cator.
N RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T or CVT shift N range indi-
cator.
D RANGE IND [ON/OFF] X XIndicates [ON/OFF] condition of A/T or CVT shift D range indi-
cator.
2 RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift 2 range indicator.
L RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of CVT shift L range indicator.
1 RANGE IND [ON/OFF] X X Indicates [ON/OFF] condition of A/T shift 1 range indicator.
CRUISE IND [ON/OFF] X Indicates [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Indicates [ON/OFF] condition of SET indicator.
O/D OFF W/L [ON/OFF] X Indicates [ON/OFF] condition of O/D OFF indicator lamp.

DI-52
WARNING CHIME
Revision: June 20062007 Versa
Terminals and Reference Values for BCMEKS00I12
Refer to BCS-12, "Terminals and Reference Values for BCM" .
CONSULT-II Function (BCM)EKS00I13
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II START PROCEDURE
Refer to GI-38, "CONSULT-II Start Procedure" .
DATA MONITOR
Display Item List
ACTIVE TEST
Display Item List
SELF-DIAG RESULTS
Display Item List
NOTE:
If “CAN communication [U1000]” is indicated, after printing the monitor item, go to “LAN system”. Refer to
LAN-44, "
TROUBLE DIAGNOSIS" .
BCM diagnostic
test itemDiagnostic mode Description
Inspection by partWORK SUPPORTSupports inspections and adjustments. Commands are transmitted to the BCM
for setting the status suitable for required operation, input/output signals are
received from the BCM and received data is displayed.
DATA MONITOR Displays BCM input/output data in real time.
ACTIVE TEST Operation of electrical loads can be checked by sending drive signal to them.
SELF-DIAG RESULTS Displays BCM self-diagnosis results.
CAN DIAG SUPPORT MNTR The result of transmit/receive diagnosis of CAN communication can be read.
ECU PART NUMBER BCM part number can be read.
CONFIGURATION Performs BCM configuration read/write functions.
Monitored item ALL SIGNALSSELECTION
FROM MENUContents
IGN ON SW X X Indicates [ON/OFF] condition of ignition switch.
KEY ON SW X X Indicates [ON/OFF] condition of key switch.
DOOR SW-DR X X Indicates [ON/OFF] condition of front door switch LH.
LIGHT SW 1ST X X Indicates [ON/OFF] condition of lighting switch.
BUCKLE SW X X Indicates [ON/OFF] condition of seat belt buckle switch LH.
Test item Malfunction is detected when···
IGN KEY WARN ALM This test is able to check key warning chime operation.
LIGHT WARN ALM This test is able to check light warning chime operation.
SEAT BELT WARN TEST This test is able to check seat belt warning chime operation.
Display item [Code] Malfunction is detected when...
CAN communication [U1000] Malfunction is detected in CAN communication.

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
A
EC
Revision: June 20062007 Versa INDEX FOR DTC ........................................................ 8
DTC No. Index ......................................................... 8
Alphabetical Index .................................................. 12
PRECAUTIONS ........................................................ 16
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 16
Precautions for Procedures without Cowl Top Cover ... 16
On Board Diagnostic (OBD) System of Engine and
A/T, CVT ................................................................. 16
Precaution .............................................................. 17
PREPARATION ......................................................... 20
Special Service Tools ............................................. 20
Commercial Service Tools ...................................... 21
ENGINE CONTROL SYSTEM .................................. 22
System Diagram ..................................................... 22
Multiport Fuel Injection (MFI) System .................... 23
Electronic Ignition (EI) System ............................... 25
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 26
AIR CONDITIONING CUT CONTROL ..................... 27
Input/Output Signal Chart ....................................... 27
System Description ................................................ 27
AUTOMATIC SPEED CONTROL DEVICE (ASCD) ... 28
System Description ................................................ 28
Component Description .......................................... 29
CAN COMMUNICATION .......................................... 30
System Description ................................................ 30
EVAPORATIVE EMISSION SYSTEM ....................... 31
Description ............................................................. 31
Component Inspection ........................................... 34
Removal and Installation ........................................ 35
How to Detect Fuel Vapor Leakage ....................... 35
ON BOARD REFUELING VAPOR RECOVERY
(ORVR) ...................................................................... 38
System Description ................................................ 38
Diagnostic Procedure ............................................. 39
Component Inspection ........................................... 42
POSITIVE CRANKCASE VENTILATION ................. 44Description .............................................................. 44
Component Inspection ............................................ 44
NVIS (NISSAN VEHICLE IMMOBILIZER SYSTEM-
NATS) ........................................................................ 46
Description .............................................................. 46
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 47
Introduction ............................................................. 47
Two Trip Detection Logic ........................................ 47
Emission-related Diagnostic Information ................ 48
Malfunction Indicator Lamp (MIL) ........................... 61
OBD System Operation Chart ................................ 65
BASIC SERVICE PROCEDURE ............................... 70
Basic Inspection ..................................................... 70
Idle Speed and Ignition Timing Check .................... 75
Procedure After Replacing ECM ............................ 77
VIN Registration ..................................................... 77
Accelerator Pedal Released Position Learning ...... 77
Throttle Valve Closed Position Learning ................. 78
Idle Air Volume Learning ........................................ 78
Fuel Pressure Check .............................................. 81
TROUBLE DIAGNOSIS ............................................ 83
Trouble Diagnosis Introduction ............................... 83
DTC Inspection Priority Chart ................................. 89
Fail-Safe Chart ....................................................... 91
Symptom Matrix Chart ............................................ 92
Engine Control Component Parts Location ............ 96
Vacuum Hose Drawing .........................................102
Circuit Diagram .....................................................103
ECM Harness Connector Terminal Layout ...........105
ECM Terminals and Reference Value ...................105
CONSULT-II Function (ENGINE) ..........................113
Generic Scan Tool (GST) Function .......................126
CONSULT-II Reference Value in Data Monitor .....128
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................131
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .133
Description ............................................................133
Testing Condition ..................................................133
Inspection Procedure ............................................133
Diagnostic Procedure ...........................................134

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

TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-139
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16. CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “DATA MONITOR (SPEC)” mode, and make sure that the indication is within
the SP value.
OK or NG
OK >>INSPECTION END
NG >> Detect malfunctioning part according to EC-92, "
Symptom Matrix Chart" .
17. CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “DATA MONITOR (SPEC)” mode, and
make sure that the indication is within the SP value.
OK or NG
OK >>INSPECTION END
NG (More than the SP value)>>GO TO 18.
NG (Less than the SP value)>>GO TO 25.
18. DETECT MALFUNCTIONING PART
1. Check for the cause of large engine friction. Refer to the following.
–Engine oil level is too high
–Engine oil viscosity
–Belt tension of alternator, A/C compressor (models with A/C), etc. is excessive
–Noise from engine
–Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
–Valve clearance malfunction
–Intake valve timing control function malfunction
–Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 30.
19. CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.

Crushed air ducts

Malfunctioning seal of air cleaner element

Uneven dirt of air cleaner element

Improper specification of intake air system
OK or NG
OK >> GO TO 21.
NG >> Repair or replace malfunctioning part, and then GO TO 20.
PBIB2332E