Belt NISSAN X-TRAIL 2003 Service Owner's Guide

OVERHEATING CAUSE ANALYSIS
CO-27
[YD22DDTi]
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OVERHEATING CAUSE ANALYSISPFP:00012
Troubleshooting ChartEBS00BAW
Symptom Check items
Cooling sys-
tem parts
malfunctionPoor heat transferWater pump malfunction Worn or loose drive belt
— Thermostat stuck closed —
Damaged finsDust contamination or
paper clogging
Physical damage
Clogged radiator cooling
tubeExcess foreign material
(rust, dirt, sand, etc.)
Reduced air flowCooling fan does not oper-
ateRefer to DTC in EC1217
(cooling system)
— High resistance to fan rota-
tion
Fan assembly
Damaged fan blades
Damaged radiator shroud — — —
Improper engine coolant
mixture ratio—— —
Poor engine coolant quality — Engine coolant density —
Insufficient engine coolantEngine coolant leaksCooling hoseLoose clamp
Cracked hose
Water pump Poor sealing
Radiator capLoose
Poor sealing
RadiatorO-ring for damage, deterio-
ration or improper fitting
Cracked radiator tank
Cracked radiator core
Reservoir tank Cracked reservoir tank
Overflowing reservoir tankExhaust gas leaks into
cooling systemCylinder head deterioration
Cylinder head gasket dete-
rioration

ENGINE COOLANT
CO-31
[YD22DDTi]
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ENGINE COOLANTPFP:KQ100
InspectionEBS00BAY
LEVEL CHECK

Check if the reservoir tank engine coolant level within MIN to
MAX when engine is cool.

Adjust engine coolant level as necessary.
CHECKING RADIATOR SYSTEM FOR LEAKS

To check for leaks, apply pressure to the cooling system with the
radiator cap tester (commercial service tool) and the radiator
cap tester adapter (special service tool).
WARNING:
Do not remove radiator cap when engine is hot. Serious
burns could occur from high pressure engine coolant
escaping from radiator.
CAUTION:
Higher test pressure than specified may cause radiator
damage.
NOTE:
In a case that engine coolant decreases, replenish radiator with engine coolant.

If anything is found, repair or replace damaged parts.
Changing Engine CoolantEBS00BAZ
WARNING:

To avoid being scalded, do not change engine coolant when engine is hot.

Wrap a thick cloth around cap and carefully remove radiator cap. First, turn radiator cap a quarter
of a turn to release built-up pressure. Then turn the cap all the way.
DRAINING ENGINE COOLANT
1. Remove engine undercover.
2. Open radiator drain plug at the bottom of radiator, and remove
radiator cap.
NOTE:

Be careful not to allow engine coolant to contact drive
belts.

Cover the exhaust tube heat shield to prevent from splashing
engine coolant.
When draining all engine coolant in the system, also perform the following steps.
SMA412B
Testing pressure:
157 kPa (1.57 bar, 1.6 kg/cm
2 , 23 psi)
SLC134B
PBIC0236E

CO-34
[YD22DDTi]
RADIATOR

RADIATORPFP:21400
Removal and InstallationEBS00BB0
WARNING:
Do not remove radiator cap when engine is hot. Serious burns could occur from high-pressure engine
coolant escaping from radiator.
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-31, "DRAINING ENGINE COOLANT" .
CAUTION:

Perform this step when engine is cold.

Do not spill engine coolant on drive belts.
2. Disconnect radiator hose (upper and lower), reservoir tank hose and radiator mounting bracket.
3. Remove radiator and cooling fan assembly.
CAUTION:
Do not damage or scratch radiator core when removing.
INSTALLATION
Install in the reverse order of removal.
INSPECTION AFTER INSTALLATION

Check for leaks of engine coolant using the radiator cap tester adapter (special service tool:
EG17650301) and the radiator cap tester (commercial service tool). Refer to CO-31, "
CHECKING RADIA-
TOR SYSTEM FOR LEAKS" .

Start and warm up engine. Visually check if there is no leaks of engine coolant.
1. Radiator 2. Radiator mounting bracket 3. Mounting rubber (upper)
4. Radiator cap 5. Mounting rubber (lower) 6. O-ring
7. Drain plug 8. Radiator hose (lower) 9. Cooling fan assembly
10. Reservoir tank bracket 11. Reservoir tank 12. Reservoir tank hose
13. Radiator hose (upper)
PBIC2383E

CO-36
[YD22DDTi]
COOLING FAN

COOLING FANPFP:21140
Removal and InstallationEBS011WO
REMOVAL
1. Drain engine coolant from radiator. Refer to CO-31, "Changing Engine Coolant" .
CAUTION:
Perform when engine is cold.
2. Remove air duct (inlet) and air duct assembly. Refer to EM-133, "
AIR CLEANER AND AIR DUCT" .
3. Disconnect radiator hose (upper) at radiator side. Refer to CO-12, "
RADIATOR" .
CAUTION:
Do not spill engine coolant on drive belt.
4. Disconnect harness connectors from fan motors, and move them to aside.
5. Remove radiator cooling fan assembly. Refer to CO-34, "
RADIATOR" .
CAUTION:
Be careful not to damage or scratch on radiator core.
INSTALLATION
Install in the reverse order of removal.

Cooling fans are controlled by ECM. For details, refer to EC-1011, "DTC P0217 ENGINE OVER TEM-
PERATURE" (WITH EURO-OBD), EC-1320, "DTC P0217 ENGINE OVER TEMPERATURE" (WITHOUT
EURO-OBD).
DISASSEMBLY AND ASSEMBLY
Disassembly
1. Remove cooling fans.
2. Remove cooling fan motors from cooling fan shroud.
1. Cooling fan motors 2. Cooling fan shroud 3. Cooling fan (RH)
4. Cooling fan (LH)
PBIC2252E

CO-42
[YD22DDTi]
WATER PUMP

WATE R P U M PPFP:21020
Removal and InstallationEBS00BB4
WARNING:
Do not remove radiator cap when the engine is hot. Serious burns could occur from high pressure
engine coolant escaping from the radiator.
REMOVAL
1. Remove RH engine undercover.
2. Remove drive belt. Refer to EM-131, "
DRIVE BELTS" .
3. Drain engine coolant. Refer to CO-31, "
DRAINING ENGINE COOLANT" .
CAUTION:
Perform when engine is cold.
4. Support the bottom of oil pan with a floor jack etc, and remove RH engine mounting insulator (front side of
engine). Refer to EM-208, "
ENGINE ASSEMBLY" .
5. Remove water pump pulley.

Loosen the pulley bolts after fixing the pulley using a screwdriver etc.
6. Remove RH engine mounting bracket.
7. Remove water pump.

Engine coolant will leak from cylinder block, so have a receptacle ready below.
CAUTION:

Handle the water pump vane so that it does not contact any other parts.

Water pump cannot be disassembled and should be replaced as a unit.
1. Gasket 2. Water pump 3. RH engine mounting bracket
4. Water pump pulley
PBIC2384E

EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTION EC
A
EC

ENGINE CONTROL SYSTEM
QR (WITH EURO-OBD)
INDEX FOR DTC ...................................................... 19
Alphabetical Index .................................................. 19
DTC No. Index ....................................................... 21
PRECAUTIONS ........................................................ 24
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ................................................................ 24
On Board Diagnostic (OBD) System of Engine and
A/T .......................................................................... 24
Precaution .............................................................. 24
Wiring Diagrams and Trouble Diagnosis ................ 27
PREPARATION ......................................................... 28
Special Service Tools ............................................. 28
Commercial Service Tools ...................................... 29
ENGINE CONTROL SYSTEM .................................. 30
System Diagram ..................................................... 30
Vacuum Hose Drawing ........................................... 32
System Chart ......................................................... 34
Multiport Fuel Injection (MFI) System .................... 34
Electronic Ignition (EI) System ............................... 37
Air Conditioning Cut Control ................................... 37
Fuel Cut Control (at No Load and High Engine
Speed) .................................................................... 38
CAN Communication Unit ...................................... 38
BASIC SERVICE PROCEDURE .............................. 44
Idle Speed and Ignition Timing Check .................... 44
Accelerator Pedal Released Position Learning ...... 45
Throttle Valve Closed Position Learning ................ 46
Idle Air Volume Learning ........................................ 46
Fuel Pressure Check .............................................. 48
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 51
Introduction ............................................................ 51
Two Trip Detection Logic ........................................ 51
Emission-related Diagnostic Information ................ 52
NATS (Nissan Anti-theft System) ........................... 64
Malfunction Indicator (MI) ....................................... 64
OBD System Operation Chart ................................ 67
TROUBLE DIAGNOSIS ............................................ 73
Trouble Diagnosis Introduction ............................... 73DTC Inspection Priority Chart ................................. 76
Fail-safe Chart ........................................................ 77
Basic Inspection ..................................................... 79
Symptom Matrix Chart ............................................ 84
Engine Control Component Parts Location ............ 88
Circuit Diagram ....................................................... 93
ECM Harness Connector Terminal Layout ............. 95
ECM Terminals and Reference Value ..................... 95
CONSULT-II Function ...........................................102
Generic Scan Tool (GST) Function .......................112
CONSULT-II Reference Value in Data Monitor Mode
.114
Major Sensor Reference Graph in Data Monitor
Mode .....................................................................116
TROUBLE DIAGNOSIS - SPECIFICATION VALUE .119
Description ............................................................119
Testing Condition ..................................................119
Inspection Procedure ............................................119
Diagnostic Procedure ...........................................120
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT .......................................................................123
Description ............................................................123
Diagnostic Procedure ...........................................123
POWER SUPPLY AND GROUND CIRCUIT ...........124
Wiring Diagram .....................................................124
Diagnostic Procedure ...........................................125
Component Inspection ..........................................131
Ground Inspection ................................................131
DTC U1000, U1001 CAN COMMUNICATION LINE .132
Description ............................................................132
On Board Diagnosis Logic ....................................132
DTC Confirmation Procedure ...............................132
Wiring Diagram .....................................................133
Diagnostic Procedure ...........................................134
DTC P0011 IVT CONTROL .....................................135
Description ............................................................135
CONSULT-II Reference Value in Data Monitor Mode
.135
On Board Diagnosis Logic ....................................136

EC-5
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ECA
Diagnostic Procedure ........................................... 382
Component Inspection ......................................... 384
DTC P2122, P2123 APP SENSOR ........................ 386
Component Description ........................................ 386
CONSULT-II Reference Value in Data Monitor Mode
. 386
On Board Diagnosis Logic ................................... 386
DTC Confirmation Procedure ............................... 387
Wiring Diagram .................................................... 388
Diagnostic Procedure ........................................... 390
Component Inspection ......................................... 392
Removal and Installation ...................................... 392
DTC P2127, P2128 APP SENSOR ........................ 393
Component Description ........................................ 393
CONSULT-II Reference Value in Data Monitor Mode
. 393
On Board Diagnosis Logic ................................... 393
DTC Confirmation Procedure ............................... 393
Wiring Diagram .................................................... 395
Diagnostic Procedure ........................................... 397
Component Inspection ......................................... 400
Removal and Installation ...................................... 400
DTC P2135 TP SENSOR ........................................ 401
Component Description ........................................ 401
CONSULT-II Reference Value in Data Monitor Mode
. 401
On Board Diagnosis Logic ................................... 401
DTC Confirmation Procedure ............................... 401
Wiring Diagram .................................................... 403
Diagnostic Procedure ........................................... 405
Component Inspection ......................................... 408
Removal and Installation ...................................... 408
DTC P2138 APP SENSOR ..................................... 409
Component Description ........................................ 409
CONSULT-II Reference Value in Data Monitor Mode
. 409
On Board Diagnosis Logic ................................... 409
DTC Confirmation Procedure ............................... 410
Wiring Diagram ..................................................... 411
Diagnostic Procedure ........................................... 413
Component Inspection ......................................... 416
Removal and Installation ...................................... 416
IGNITION SIGNAL .................................................. 417
Component Description ........................................ 417
Wiring Diagram .................................................... 418
Diagnostic Procedure ........................................... 421
Component Inspection ......................................... 426
Removal and Installation ...................................... 427
INJECTOR CIRCUIT ............................................... 428
Component Description ........................................ 428
CONSULT-II Reference Value in Data Monitor Mode
. 428
Wiring Diagram .................................................... 429
Diagnostic Procedure ........................................... 430
Component Inspection ......................................... 433
Removal and Installation ...................................... 433
VIAS ........................................................................ 434
Description ........................................................... 434
CONSULT-II Reference Value in Data Monitor Mode .435
Wiring Diagram .....................................................436
Diagnostic Procedure ...........................................438
Component Inspection ..........................................441
Removal and Installation ......................................442
FUEL PUMP CIRCUIT ............................................443
Description ............................................................443
CONSULT-II Reference Value in Data Monitor Mode
.443
Wiring Diagram .....................................................444
Diagnostic Procedure ...........................................447
Component Inspection ..........................................450
Removal and Installation ......................................450
REFRIGERANT PRESSURE SENSOR ..................451
Component Description ........................................451
Wiring Diagram .....................................................452
Diagnostic Procedure ...........................................453
Removal and Installation ......................................455
ELECTRICAL LOAD SIGNAL ................................456
CONSULT-II Reference Value in Data Monitor Mode
.456
Wiring Diagram .....................................................457
Diagnostic Procedure ...........................................464
MI & DATA LINK CONNECTORS ...........................469
Wiring Diagram .....................................................469
EVAPORATIVE EMISSION SYSTEM .....................473
Description ............................................................473
Component Inspection ..........................................476
POSITIVE CRANKCASE VENTILATION ...............478
Description ............................................................478
Component Inspection ..........................................478
SERVICE DATA AND SPECIFICATIONS (SDS) ....480
Fuel Pressure .......................................................480
Idle Speed and Ignition Timing .............................480
Calculated Load Value ..........................................480
Mass Air Flow Sensor ...........................................480
Intake Air Temperature Sensor .............................480
Engine Coolant Temperature Sensor ...................480
Heated Oxygen Sensor 1 Heater .........................480
Heated Oxygen sensor 2 Heater ..........................481
Crankshaft Position Sensor (POS) .......................481
Camshaft Position Sensor (PHASE) ....................481
Throttle Control Motor ...........................................481
Injector ..................................................................481
Fuel Pump ............................................................481
QR (WITHOUT EURO-OBD)
INDEX FOR DTC .....................................................482
Alphabetical Index ................................................482
DTC No. Index ......................................................484
PRECAUTIONS ......................................................486
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................486
On Board Diagnostic (OBD) System of Engine ....486
Precaution ............................................................486
Wiring Diagrams and Trouble Diagnosis ..............489

EC-9
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ECA
Wiring Diagram .................................................... 793
Diagnostic Procedure ........................................... 794
Component Inspection ......................................... 796
Removal and Installation ...................................... 797
IGNITION SIGNAL .................................................. 798
Component Description ........................................ 798
Wiring Diagram .................................................... 799
Diagnostic Procedure ........................................... 802
Component Inspection ......................................... 807
Removal and Installation ...................................... 808
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 809
Description ........................................................... 809
CONSULT-II Reference Value in Data Monitor Mode
. 809
Wiring Diagram .................................................... 810
Diagnostic Procedure ........................................... 812
Component Inspection ......................................... 815
Removal and Installation ...................................... 815
PNP SWITCH .......................................................... 816
Component Description ........................................ 816
CONSULT-II Reference Value in Data Monitor Mode
. 816
Wiring Diagram .................................................... 817
Diagnostic Procedure ........................................... 818
INJECTOR CIRCUIT ............................................... 820
Component Description ........................................ 820
CONSULT-II Reference Value in Data Monitor Mode
. 820
Wiring Diagram .................................................... 821
Diagnostic Procedure ........................................... 822
Component Inspection ......................................... 825
Removal and Installation ...................................... 825
VIAS ........................................................................ 826
Description ........................................................... 826
CONSULT-II Reference Value in Data Monitor Mode
. 827
Wiring Diagram .................................................... 828
Diagnostic Procedure ........................................... 830
Component Inspection ......................................... 833
Removal and Installation ...................................... 834
FUEL PUMP CIRCUIT ............................................ 835
Description ........................................................... 835
CONSULT-II Reference Value in Data Monitor Mode
. 835
Wiring Diagram .................................................... 836
Diagnostic Procedure ........................................... 839
Component Inspection ......................................... 842
Removal and Installation ...................................... 842
REFRIGERANT PRESSURE SENSOR ................. 843
Component Description ........................................ 843
Wiring Diagram .................................................... 844
Diagnostic Procedure ........................................... 845
Removal and Installation ...................................... 847
ELECTRICAL LOAD SIGNAL ................................ 848
CONSULT-II Reference Value in Data Monitor Mode
. 848
Wiring Diagram .................................................... 849
Diagnostic Procedure ........................................... 856MI & DATA LINK CONNECTORS ...........................861
Wiring Diagram .....................................................861
Wiring Diagram – ..................................................863
EVAPORATIVE EMISSION SYSTEM .....................865
Description ............................................................865
Component Inspection ..........................................868
POSITIVE CRANKCASE VENTILATION ...............870
Description ............................................................870
Component Inspection ..........................................870
SERVICE DATA AND SPECIFICATIONS (SDS) ....872
Fuel Pressure .......................................................872
Idle Speed and Ignition Timing .............................872
Mass Air Flow Sensor ...........................................872
Intake Air Temperature Sensor .............................872
Engine Coolant Temperature Sensor ...................872
Heated Oxygen Sensor 1 Heater .........................872
Heated Oxygen sensor 2 Heater ..........................872
Crankshaft Position Sensor (POS) .......................872
Camshaft Position Sensor (PHASE) ....................873
Throttle Control Motor ...........................................873
Injector ..................................................................873
Fuel Pump ............................................................873
YD (WITH EURO-OBD)
INDEX FOR DTC .....................................................874
Alphabetical Index ................................................874
DTC No. Index ......................................................876
PRECAUTIONS ......................................................878
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ...............................................................878
On Board Diagnostic (OBD) System of Engine ....878
Precautions ...........................................................878
Wiring Diagrams and Trouble Diagnosis ..............881
PREPARATION .......................................................882
Special Service Tools ...........................................882
Commercial Service Tools ....................................882
ENGINE CONTROL SYSTEM ................................883
System Diagram ...................................................883
Vacuum Hose Drawing .........................................884
System Chart ........................................................885
Fuel Injection Control System ...............................885
Fuel Injection Timing Control System ...................887
Air Conditioning Cut Control .................................887
Fuel Cut Control (At No Load & High Engine Speed) .887
Crankcase Ventilation System ..............................888
CAN Communication ............................................888
BASIC SERVICE PROCEDURE .............................890
Fuel Filter ..............................................................890
Fuel Pump Learning Value Clearing .....................890
ON BOARD DIAGNOSTIC (OBD) SYSTEM ..........892
Introduction ...........................................................892
Three Trip Detection Logic and One Trip Detection
Logic .....................................................................892
Emission-related Diagnostic Information ..............892
NATS (Nissan Anti-theft System) .........................896
Malfunction Indicator (MI) .....................................896
OBD System Operation Chart ..............................898

EC-14 Crankshaft Position Sensor .................................1204
Camshaft Position Sensor ...................................1204
YD (WITHOUT EURO-OBD)
INDEX FOR DTC ....................................................1205
Alphabetical Index ...............................................1205
DTC No. Index .....................................................1206
PRECAUTIONS ......................................................1209
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ..............................................................1209
On Board Diagnostic (OBD) System of Engine ...1209
Precautions ..........................................................1209
Wiring Diagrams and Trouble Diagnosis .............1212
PREPARATION ......................................................1213
Special Service Tools ..........................................1213
Commercial Service Tools ...................................1213
ENGINE CONTROL SYSTEM ...............................1214
System Diagram ..................................................1214
Vacuum Hose Drawing ........................................1215
System Chart .......................................................1216
Fuel Injection Control System ..............................1216
Fuel Injection Timing Control System ..................1218
Air Conditioning Cut Control ................................1218
Fuel Cut Control (At No Load & High Engine Speed) 1218
Crankcase Ventilation System .............................1219
CAN Communication ...........................................1219
BASIC SERVICE PROCEDURE ............................1221
Fuel Filter .............................................................1221
Fuel Pump Learning Value Clearing ....................1221
ON BOARD DIAGNOSTIC (OBD) SYSTEM .........1223
DTC and MI Detection Logic ...............................1223
Diagnostic Trouble Code (DTC) ..........................1223
Freeze Frame Data ..............................................1223
NATS (Nissan Anti-theft System) .........................1224
Malfunction Indicator (MI) ....................................1224
TROUBLE DIAGNOSIS .........................................1227
Trouble Diagnosis Introduction ............................1227
DTC Inspection Priority Chart ..............................1230
Basic Inspection ..................................................1231
Symptom Matrix Chart .........................................1235
Engine Control Component Parts Location .........1239
Circuit Diagram ....................................................1243
ECM Harness Connector Terminal Layout ..........1245
ECM Terminals And Reference Value .................1245
CONSULT-II Function ..........................................1251
CONSULT-II Reference Value in Data Monitor Mode
1257
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................1259
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ......................................................................1260
Description ...........................................................1260
Diagnostic Procedure ..........................................1260
MAIN POWER SUPPLY AND GROUND CIRCUIT 1261
ECM Terminals and Reference Value ..................1261
Wiring Diagram ....................................................1262
Diagnostic Procedure ..........................................1263Component Inspection .........................................1266
Ground Inspection ................................................1267
DTC U1000 CAN COMMUNICATION LINE ...........1268
Description ...........................................................1268
On Board Diagnosis Logic ...................................1268
DTC Confirmation Procedure ...............................1268
Wiring Diagram ....................................................1269
Diagnostic Procedure ...........................................1270
DTC P0016 CKP - CMP CORRELATION ..............1271
On Board Diagnosis Logic ...................................1271
DTC Confirmation Procedure ...............................1271
Diagnostic Procedure ...........................................1271
DTC P0088 FUEL SYSTEM ...................................1273
On Board Diagnosis Logic ...................................1273
DTC Confirmation Procedure ...............................1273
Diagnostic Procedure ...........................................1273
Removal and Installation ......................................1274
DTC P0089 FUEL PUMP .......................................1275
On Board Diagnosis Logic ...................................1275
DTC Confirmation Procedure ...............................1275
Diagnostic Procedure ...........................................1275
Removal and Installation ......................................1276
DTC P0093 FUEL SYSTEM ...................................1277
On Board Diagnosis Logic ...................................1277
DTC Confirmation Procedure ...............................1277
Diagnostic Procedure ...........................................1277
Component Inspection .........................................1278
Removal and Installation ......................................1279
DTC P0102, P0103 MAF SENSOR ........................1280
Component Description .......................................1280
CONSULT-II Reference Value in Data Monitor Mode
1280
ECM Terminals and Reference Value ..................1280
On Board Diagnosis Logic ...................................1280
DTC Confirmation Procedure ...............................1280
Wiring Diagram ....................................................1282
Diagnostic Procedure ...........................................1283
Component Inspection .........................................1285
Removal and Installation ......................................1285
DTC P0112, P0113 IAT SENSOR ...........................1286
Component Description .......................................1286
On Board Diagnosis Logic ...................................1286
DTC Confirmation Procedure ...............................1286
Wiring Diagram ....................................................1287
Diagnostic Procedure ...........................................1288
Component Inspection .........................................1290
Removal and Installation ......................................1290
DTC P0117, P0118 ECT SENSOR .........................1291
Description ...........................................................1291
On Board Diagnosis Logic ...................................1291
DTC Confirmation Procedure ...............................1291
Wiring Diagram ....................................................1293
Diagnostic Procedure ...........................................1294
Component Inspection .........................................1296
Removal and Installation ......................................1296
DTC P0122, P0123 APP SENSOR ........................1297
Description ...........................................................1297
CONSULT-II Reference Value in Data Monitor Mode
1297

EC-24
[QR (WITH EURO-OBD)]
PRECAUTIONS

PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS010L0
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. Information necessary to service the system safely is included in the SRS and SB section of
this Service Manual.
WARNING:

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.
On Board Diagnostic (OBD) System of Engine and A/TEBS010L1
The ECM has an on board diagnostic system. It will light up the malfunction indicator (MI) 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 MI to light up.

Be sure to connect and lock the connectors securely after work. A loose (unlocked) connector will
cause the MI 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-70, "
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 MI 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 MI 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.
PrecautionEBS010L2

Always use a 12 volt battery as power source.

Do not attempt to disconnect battery cables while engine is
running.

Before connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
ground cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned OFF.

Before removing parts, turn ignition switch OFF and then
disconnect battery ground cable.
SEF289H