fuel system NISSAN NAVARA 2005 Repair User Guide
[x] Cancel search | Manufacturer: NISSAN, Model Year: 2005, Model line: NAVARA, Model: NISSAN NAVARA 2005Pages: 3171, PDF Size: 49.59 MB
Page 929 of 3171
COMBINATION METERS
DI-19
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PRELIMINARY CHECK
1.CHECK WARNING LAMPS ILLUMINATION
1. Turn ignition switch ON.
2. Make sure warning lamps (such as malfunction indicator lamp and oil pressure warning indicator) illumi-
nate.
Do warning lamps illuminate?
YES >> GO TO 2.
NO >> Check ignition power supply system of combination meter. Refer toDI-19, "
Power Supply and
Ground Circuit Inspection".
2.CHECK COMBINATION METER (SELF-DIAGNOSIS MODE)
Perform self-diagnosis mode of combination meter function. Refer toDI-13, "
Self-Diagnosis Mode of Combi-
nation Meter".
Does self-diagnosis mode operate normally?
YES >> GO TO 3.
NO >> Check applicable parts, and repair or replace corresponding parts.
3.CHECK COMBINATION METER (CONSULT-II)
Perform self-diagnosis of combination meter. Refer toDI-15, "
CONSULT-II Function (METER)".
Self-diagnosis results
No malfunction detected>>INSPECTION END
Malfunction detected>>Check applicable parts, and repair or replace corresponding parts.
Symptom ChartEKS00L8P
Power Supply and Ground Circuit InspectionEKS00L8O
1.CHECK FUSE
Check for blown fuse of combination meter.
OK or NG
OK >> GO TO 2.
NG >> Be sure to eliminate cause of malfunction before installing new fuse. Refer toPG-4, "
POWER
SUPPLY ROUTING CIRCUIT".
Symptom Possible cause
Speedometer and odo/trip meter indication is malfunction. Refer toDI-20, "
Vehicle Speed Signal Inspection".
Tachometer indication is malfunction. Refer toDI-21, "
Engine Speed Signal Inspection".
Water temperature gauge indication is malfunction. Refer toDI-21, "
Engine Coolant Temperature Signal Inspection".
Fuel gauge indication is malfunction.
Refer toDI-22, "
Fuel Level Sensor Signal Inspection".
Low-fuel warning lamp indication is irregular.
A/T indication is malfunction. Refer toDI-50, "
A/T Indicator Does Not Illuminate".
Ambient air temperature indication is malfunction. Refer toDI-24, "
Ambient Sensor Signal Inspection".
Power source Fuse No.
Battery 19
Ignition switch ON or START 14
Page 936 of 3171
DI-26
COMBINATION METERS
4.QUESTION 4
During driving, does the fuel gauge pointer move gradually toward EMPTY position?
YES >> Check the fuel level sensor unit. Refer toDI-27, "FUEL LEVEL SENSOR UNIT CHECK".
NO >> The float arm may interfere or bind with any of the components in the fuel tank.
DTC [U1000] CAN Communication CircuitEKS00L8X
Symptom: Displays “CAN COMM CIRC [U1000]” at the self-diagnosis result for combination meter.
1.CHECK CAN COMMUNICATION
1. Select “SELF-DIAG RESULTS” mode for “METER” with CONSULT-II.
2. Print out CONSULT-II screen.
>> Go to “LAN SYSTEM”. Refer toLAN-3, "
Precautions When Using CONSULT-II".
DTC [B2205] Vehicle Speed CircuitEKS00L8Y
Symptom: Displays “VEHICLE SPEED CIRC [B2205]” at the self-diagnosis result for combination meter.
Perform the ABS actuator and electric unit (control unit) self-diagnosis, and repair or replace malfunctioning
parts. Refer toBRC-17, "
CONSULT- II Functions".
Page 961 of 3171
WARNING CHIME
DI-51
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WARNING CHIMEPFP:24814
System DescriptionEKS00L9D
lBuzzer for warning chime system is installed in the combination meter.
lThe buzzer sounds at the following conditions:
–When combination meter receives buzzer output signal with CAN communication line
–When combination meter judges warning chime sound condition is found
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
lthrough 50A fusible link (letterG, located in the fuse and fusible link box)
lto BCM terminal 57.
With ignition switch in the ON or START position, power is supplied
lthrough 10A fuse [No. 1, located in the fuse block (J/B)]
lto BCM terminal 3.
Ground is supplied
lto BCM terminal 55
lthrough grounds M21, M80 and M83.
LIGHT WARNING CHIME
With ignition switch in OFF or ACC position, driver's door open, and lighting switch in 1ST or 2ND position, the
light warning chime will sound.
lBCM detects ignition switch in OFF or ACC position, front door switch (driver side) ON, and lighting switch
in 1ST or 2ND position. And then transmits buzzer output signal (light warning chime) to combination
meter with CAN communication line.
lWhen combination meter receives buzzer output signal (light warning chime), it sounds the buzzer.
NOTE:
For further details of combination switch, refer toBCS-3, "
COMBINATION SWITCH READING FUNCTION".
KEY REMINDER WARNING CHIME
Key reminder chime sounds, at the same time, when key reminder system starts operating.
key reminder chime also sounds when the following three conditions are simultaneously met.
lKey is inserted in the ignition key cylinder
lDriver¢s door is opened
lThe setting of driver¢s door lock knob is “LOCK”
For information regarding key reminder system, refer toBL-21, "
POWER DOOR LOCK SYSTEM".
LOW-FUEL WARNING CHIME
Low-fuel warning chime sounds, when low-fuel warning lamp is turned ON.
Combination meter sounds warning chime three times when low-fuel warning lamp turns ON.
Page 981 of 3171
EC-1
ENGINE CONTROL SYSTEM
B ENGINE
CONTENTS
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SECTIONEC
A
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ENGINE CONTROL SYSTEM
INDEX FOR DTC ........................................................ 6
DTC No. Index ......................................................... 6
Alphabetical Index .................................................... 8
PRECAUTIONS ........................................................ 10
Precautions for Supplemental Restraint System
(SRS)“AIRBAG”and“SEATBELTPRE-TEN-
SIONER” ................................................................ 10
On Board Diagnostic (OBD) System of Engine ...... 10
Precautions ............................................................ 10
Wiring Diagrams and Trouble Diagnosis ................ 13
PREPARATION ......................................................... 14
Special Service Tools ............................................. 14
Commercial Service Tools ...................................... 14
ENGINE CONTROL SYSTEM .................................. 15
System Diagram ..................................................... 15
Vacuum Hose Drawing ........................................... 16
System Chart ......................................................... 18
Fuel Injection Control System ................................ 18
Fuel Injection Timing Control System ..................... 20
Air Conditioning Cut Control ................................... 20
Fuel Cut Control (At No Load & High Engine Speed)... 20
Crankcase Ventilation System ............................... 21
CAN Communication .............................................. 22
BASIC SERVICE PROCEDURE .............................. 23
Fuel Filter ............................................................... 23
Fuel Pump Learning Value Clearing ...................... 24
Injector Adjustment Value Registration .................. 25
ON BOARD DIAGNOSTIC (OBD) SYSTEM ............ 27
DTC Detection Logic .............................................. 27
Diagnostic Trouble Code (DTC) ............................. 27
Freeze Frame Data ................................................ 28
NATS (Nissan Anti-theft System) ........................... 28
Malfunction Indicator (MI) ....................................... 28
Relationship Between MI, DTC, CONSULT-II and
Driving Patterns ...................................................... 31
TROUBLE DIAGNOSIS ............................................ 33
Trouble Diagnosis Introduction ............................... 33
DTC Inspection Priority Chart ................................ 37
Basic Inspection ..................................................... 38
Symptom Matrix Chart ........................................... 42Engine Control Component Parts Location ............ 46
Circuit Diagram ....................................................... 50
ECM Harness Connector Terminal Layout ............. 52
ECM Terminals And Reference Value .................... 52
CONSULT-II Function (ENGINE) ............................ 59
CONSULT-II Reference Value in Data Monitor Mode
... 66
Major Sensor Reference Graph in Data Monitor
Mode ....................................................................... 69
TROUBLE DIAGNOSIS FOR INTERMITTENT INCI-
DENT ......................................................................... 70
Description .............................................................. 70
Diagnostic Procedure ............................................. 70
POWER SUPPLY AND GROUND CIRCUIT ............. 71
ECM Terminals and Reference Value ..................... 71
Wiring Diagram ....................................................... 72
Diagnostic Procedure ............................................. 73
Ground Inspection .................................................. 78
DTC U1000 CAN COMMUNICATION LINE .............. 79
Description .............................................................. 79
On Board Diagnosis Logic ...................................... 79
DTC Confirmation Procedure ................................. 79
Wiring Diagram ....................................................... 80
Diagnostic Procedure ............................................. 81
DTC P0016 CKP - CMP CORRELATION ................. 82
On Board Diagnosis Logic ...................................... 82
DTC Confirmation Procedure ................................. 82
Diagnostic Procedure ............................................. 82
DTC P0088 FUEL SYSTEM ...................................... 84
On Board Diagnosis Logic ...................................... 84
DTC Confirmation Procedure ................................. 84
Diagnostic Procedure ............................................. 84
Removal and Installation ........................................ 85
DTC P0089 FUEL PUMP .......................................... 86
On Board Diagnosis Logic ...................................... 86
DTC Confirmation Procedure ................................. 86
Diagnostic Procedure ............................................. 87
Removal and Installation ........................................ 87
DTC P0093 FUEL SYSTEM ...................................... 88
On Board Diagnosis Logic ...................................... 88
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EC-2
DTC Confirmation Procedure ................................. 88
Diagnostic Procedure ............................................. 89
Component Inspection ............................................ 90
Removal and Installation ........................................ 91
DTC P0102, P0103 MAF SENSOR ........................... 92
Component Description .......................................... 92
CONSULT-II Reference Value in Data Monitor Mode
... 92
ECM Terminals and Reference Value ..................... 92
On Board Diagnosis Logic ...................................... 93
DTC Confirmation Procedure ................................. 93
Wiring Diagram ....................................................... 94
Diagnostic Procedure ............................................. 95
Component Inspection ............................................ 96
Removal and Installation ........................................ 97
DTC P0112, P0113 IAT SENSOR ............................. 98
Component Description .......................................... 98
On Board Diagnosis Logic ...................................... 98
DTC Confirmation Procedure ................................. 98
Wiring Diagram .....................................................100
Diagnostic Procedure ...........................................101
Component Inspection ..........................................102
Removal and Installation ......................................102
DTC P0117, P0118 ECT SENSOR ..........................103
Description ............................................................103
On Board Diagnosis Logic ....................................103
DTC Confirmation Procedure ...............................103
Wiring Diagram .....................................................105
Diagnostic Procedure ...........................................106
Component Inspection ..........................................107
Removal and Installation ......................................107
DTC P0122, P0123 APP SENSOR .........................108
Description ............................................................108
CONSULT-II Reference Value in Data Monitor Mode
.108
ECM Terminals and Reference Value ...................108
On Board Diagnosis Logic ....................................109
DTC Confirmation Procedure ...............................109
Wiring Diagram .....................................................110
Diagnostic Procedure ............................................111
Component Inspection ..........................................112
Removal and Installation ......................................112
DTC P0182, P0183 FUEL PUMP TEMPERATURE
SENSOR ..................................................................113
Description ............................................................113
CONSULT-II Reference Value in Data Monitor Mode
.113
ECM Terminals and Reference Value ...................113
On Board Diagnosis Logic ....................................113
DTC Confirmation Procedure ...............................114
Wiring Diagram .....................................................115
Diagnostic Procedure ...........................................116
Removal and Installation ......................................117
DTC P0192, P0193 FRP SENSOR .........................118
Description ............................................................118
CONSULT-II Reference Value in Data Monitor Mode
.118
ECM Terminals and Reference Value ...................118
On Board Diagnosis Logic ....................................118DTC Confirmation Procedure ................................119
Wiring Diagram .....................................................120
Diagnostic Procedure ............................................121
Component Inspection ..........................................122
Removal and Installation .......................................122
DTC P0200 FUEL INJECTOR .................................123
On Board Diagnosis Logic ....................................123
DTC Confirmation Procedure ................................123
Diagnostic Procedure ............................................123
DTC P0201 - P0204 FUEL INJECTOR ...................125
Component Description ........................................125
CONSULT-II Reference Value in Data Monitor Mode
.125
ECM Terminals and Reference Value ...................125
On Board Diagnosis Logic ....................................126
DTC Confirmation Procedure ................................127
Wiring Diagram .....................................................128
Diagnostic Procedure ............................................129
Component Inspection ..........................................130
Removal and Installation .......................................131
DTC P0217 ENGINE OVER TEMPERATURE ........132
Description ............................................................132
CONSULT-II Reference Value in Data Monitor Mode
.133
On Board Diagnosis Logic ....................................133
Overall Function Check .........................................133
Wiring Diagram .....................................................135
Diagnostic Procedure ............................................137
Main 12 Causes of Overheating ...........................140
Component Inspection ..........................................141
DTC P0222, P0223 APP SENSOR .........................142
Description ............................................................142
CONSULT-II Reference Value in Data Monitor Mode
.142
ECM Terminals and Reference Value ...................142
On Board Diagnosis Logic ....................................143
DTC Confirmation Procedure ................................143
Wiring Diagram .....................................................144
Diagnostic Procedure ............................................145
Component Inspection ..........................................146
Removal and Installation .......................................146
DTC P0234 TC SYSTEM .........................................147
Description ............................................................147
ECM Terminals and Reference Value ...................147
On Board Diagnosis Logic ....................................148
Overall Function Check .........................................148
Wiring Diagram .....................................................149
Diagnostic Procedure ............................................150
Component Inspection ..........................................152
Removal and Installation .......................................152
DTC P0237, P0238 TC BOOST SENSOR ..............153
Component Description ........................................153
CONSULT-II Reference Value in Data Monitor Mode
.153
ECM Terminals and Reference Value ...................153
On Board Diagnosis Logic ....................................154
DTC Confirmation Procedure ................................154
Wiring Diagram .....................................................155
Diagnostic Procedure ............................................156
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EC-4
Wiring Diagram .....................................................234
Diagnostic Procedure ...........................................235
DTC P1268 - P1271 FUEL INJECTOR ...................237
Component Description ........................................237
CONSULT-II Reference Value in Data Monitor Mode
.237
ECM Terminals and Reference Value ...................237
On Board Diagnosis Logic ....................................238
DTC Confirmation Procedure ...............................239
Wiring Diagram .....................................................240
Diagnostic Procedure ...........................................241
Component Inspection ..........................................243
Removal and Installation ......................................244
DTC P1272 FUEL PUMP ........................................245
Description ............................................................245
CONSULT-II Reference Value in Data Monitor Mode
.245
ECM Terminals and Reference Value ...................245
On Board Diagnosis Logic ....................................246
DTC Confirmation Procedure ...............................246
Wiring Diagram .....................................................248
Diagnostic Procedure ...........................................249
Component Inspection ..........................................250
Removal and Installation ......................................250
DTC P1273 FUEL PUMP ........................................251
Description ............................................................251
CONSULT-II Reference Value in Data Monitor Mode
.251
ECM Terminals and Reference Value ...................251
On Board Diagnosis Logic ....................................252
DTC Confirmation Procedure ...............................252
Wiring Diagram .....................................................254
Diagnostic Procedure ...........................................255
Component Inspection ..........................................257
Removal and Installation ......................................257
DTC P1274 FUEL PUMP ........................................258
Description ............................................................258
CONSULT-II Reference Value in Data Monitor Mode
.258
ECM Terminals and Reference Value ...................258
On Board Diagnosis Logic ....................................259
DTC Confirmation Procedure ...............................259
Wiring Diagram .....................................................260
Diagnostic Procedure ...........................................261
Component Inspection ..........................................262
Removal and Installation ......................................262
DTC P1275 FUEL PUMP ........................................263
Description ............................................................263
CONSULT-II Reference Value in Data Monitor Mode
.263
ECM Terminals and Reference Value ...................263
On Board Diagnosis Logic ....................................264
DTC Confirmation Procedure ...............................264
Wiring Diagram .....................................................266
Diagnostic Procedure ...........................................267
Component Inspection ..........................................268
Removal and Installation ......................................268
DTC P1616 ECM .....................................................269
Description ............................................................269On Board Diagnosis Logic ....................................269
DTC Confirmation Procedure ................................269
Diagnostic Procedure ............................................270
DTC P1622 INJECTOR ADJUSTMENT VALUE .....271
Description ............................................................271
On Board Diagnosis Logic ....................................271
DTC Confirmation Procedure ................................271
Diagnostic Procedure ............................................272
DTC P1623 INJECTOR ADJUSTMENT VALUE .....273
Description ............................................................273
On Board Diagnosis Logic ....................................273
DTC Confirmation Procedure ................................273
Diagnostic Procedure ............................................274
DTC P2135 APP SENSOR ......................................275
Description ............................................................275
CONSULT-II Reference Value in Data Monitor Mode
.275
ECM Terminals and Reference Value ...................275
On Board Diagnosis Logic ....................................276
DTC Confirmation Procedure ................................276
Wiring Diagram .....................................................277
Diagnostic Procedure ............................................278
Component Inspection ..........................................279
Removal and Installation .......................................280
DTC P2146, P2149 FUEL INJECTOR POWER SUP-
PLY ..........................................................................281
Component Description ........................................281
CONSULT-II Reference Value in Data Monitor Mode
.281
ECM Terminals and Reference Value ...................281
On Board Diagnosis Logic ....................................282
DTC Confirmation Procedure ................................283
Wiring Diagram .....................................................284
Diagnostic Procedure ............................................285
DTC P2147, P2148 FUEL INJECTOR CIRCUIT .....286
Component Description ........................................286
CONSULT-II Reference Value in Data Monitor Mode
.286
ECM Terminals and Reference Value ...................286
On Board Diagnosis Logic ....................................287
DTC Confirmation Procedure ................................288
Wiring Diagram .....................................................289
Diagnostic Procedure ............................................290
Component Inspection ..........................................292
Removal and Installation .......................................292
DTC P2228, P2229 BARO SENSOR ......................293
Description ............................................................293
On Board Diagnosis Logic ....................................293
DTC Confirmation Procedure ................................293
Diagnostic Procedure ............................................294
GLOW CONTROL SYSTEM ...................................295
Description ............................................................295
Wiring Diagram .....................................................296
Diagnostic Procedure ............................................297
Component Inspection ..........................................301
Removal and Installation .......................................301
EGR VOLUME CONTROL SYSTEM ......................302
Description ............................................................302
CONSULT-II Reference Value in Data Monitor Mode
Page 985 of 3171
EC-5
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ECA . 303
ECM Terminals and Reference Value .................. 303
Wiring Diagram .................................................... 304
Diagnostic Procedure ........................................... 305
Component Inspection ......................................... 307
Removal and Installation ...................................... 308
TC BOOST CONTROL SOLENOID VALVE ........... 309
Description ........................................................... 309
ECM Terminals and Reference Value .................. 310
Wiring Diagram ..................................................... 311
Diagnostic Procedure ........................................... 312
Component Inspection ......................................... 313
Removal and Installation ...................................... 313
INTAKE AIR CONTROL VALVE CONTROL SOLE-
NOID VALVE ........................................................... 314
Description ........................................................... 314
ECM Terminals and Reference Value .................. 314
Wiring Diagram .................................................... 315
Diagnostic Procedure ........................................... 316
Component Inspection ......................................... 318
HEAT UP SWITCH .................................................. 319
Description ........................................................... 319
CONSULT-II Reference Value in Data Monitor Mode
. 319
ECM Terminals and Reference Value .................. 319
Wiring Diagram .................................................... 320
Diagnostic Procedure ........................................... 321
Component Inspection ......................................... 324
REFRIGERANT PRESSURE SENSOR ................. 325
Component Description ........................................ 325
ECM Terminals and Reference Value .................. 325
Wiring Diagram .................................................... 326
Diagnostic Procedure ........................................... 327
Removal and Installation ...................................... 329
BRAKE SWITCH .................................................... 330
Description ........................................................... 330
CONSULT-II Reference Value in Data Monitor Mode.330
ECM Terminals and Reference Value ...................330
Wiring Diagram .....................................................331
Diagnostic Procedure ...........................................332
Component Inspection ..........................................341
PNP SWITCH ..........................................................342
Description ............................................................342
CONSULT-II Reference Value in Data Monitor Mode
.342
ECM Terminals and Reference Value ...................342
Wiring Diagram .....................................................343
Diagnostic Procedure ...........................................344
START SIGNAL ......................................................348
Wiring Diagram .....................................................348
Diagnostic Procedure ...........................................349
ASCD INDICATOR ..................................................351
Component Description ........................................351
Wiring Diagram .....................................................352
Diagnostic Procedure ...........................................353
MI & DATA LINK CONNECTORS ...........................354
Wiring Diagram .....................................................354
AUTOMATIC SPEED CONTROL DEVICE (ASCD). 355
System Description ...............................................355
Component Description ........................................356
SERVICE DATA AND SPECIFICATIONS (SDS) ....357
General Specifications ..........................................357
Mass Air Flow Sensor ...........................................357
Intake Air Temperature Sensor .............................357
Engine Coolant Temperature Sensor ...................357
Fuel Rail Pressure Sensor ....................................357
Fuel Injector ..........................................................357
Glow Plug .............................................................357
EGR Volume Control Valve ..................................357
Crankshaft Position Sensor ..................................357
Camshaft Position Sensor ....................................357
Fuel Pump ............................................................358
Page 986 of 3171
EC-6
INDEX FOR DTC
INDEX FOR DTC
PFP:00024
DTC No. IndexEBS01KC3
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-79, "
DTC U1000 CAN COMMUNICATION LINE".
X: Applicable —: Not applicable
DTC
Items
(CONSULT-II screen item)MI lighting up Reference page
CONSULT-II*
1ECM*2
U1000
1000*3CAN COMM CIRCUIT —EC-79
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.——
P0016 0016 CMP/CKP RELATION —EC-82
P0088 0088 HIGH FUEL PRESS´EC-84
P0089 0089 FUEL PUMP —EC-86
P0093 0093 FUEL LEAK´EC-88
P0102 0102 MAF SEN/CIRCUIT —EC-92
P0103 0103 MAF SEN/CIRCUIT —EC-92
P0112 0112 IAT SEN/CIRCUIT —EC-98
P0113 0113 IAT SEN/CIRCUIT —EC-98
P0117 0117 ECT SEN/CIRCUIT —EC-103
P0118 0118 ECT SEN/CIRCUIT —EC-103
P0122 0122 APP SEN 1/CIRCUIT —EC-108
P0123 0123 APP SEN 1/CIRCUIT —EC-108
P0182 0182 FUEL TEMP SEN/CIRC —EC-113
P0183 0183 FUEL TEMP SEN/CIRC —EC-113
P0192 0192 FRP SEN/CIRC —EC-118
P0193 0193 FRP SEN/CIRC —EC-118
P0200 0200 INJECTOR´EC-123
P0201 0201 CYL1 INJECTOR´EC-125
P0202 0202 CYL2 INJECTOR´EC-125
P0203 0203 CYL3 INJECTOR´EC-125
P0204 0204 CYL4 INJECTOR´EC-125
P0217 0217 ENG OVER TEMP´EC-132
P0222 0222 APP SEN 2/CIRCUIT —EC-142
P0223 0223 APP SEN 2/CIRCUIT —EC-142
P0234 0234 TC SYSTEM —EC-147
P0237 0237 TC BOOST SEN/CIRC —EC-153
P0238 0238 TC BOOST SEN/CIRC —EC-153
P0335 0335 CKP SEN/CIRCUIT´EC-159
P0336 0336 CKP SENSOR´EC-165
P0340 0340 CMP SEN/CIRCUIT´EC-171
P0341 0341 CMP SENSOR´EC-177
P0501 0501 VEHICLE SPEED —EC-183
P0502 0502 VEHICLE SPEED —EC-185
P0503 0503 VEHICLE SPEED —EC-187
Page 990 of 3171
EC-10
PRECAUTIONS
PRECAUTIONS
PFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS01KC5
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:
lTo 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.
lImproper 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.
lDo 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 EngineEBS01KC6
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:
lBe sure to turn the ignition switch OFF and disconnect the battery negative 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.
lBe 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.)
lCertain 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 toPG-75, "
HAR-
NESS CONNECTOR".
lBe 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.
lBe 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 system, etc.
lBe sure to erase the unnecessary malfunction information (repairs completed) from the ECM
before returning the vehicle to the customer.
PrecautionsEBS01KC7
lAlways use a 12 volt battery as power source.
lDo not attempt to disconnect battery cables while engine is
running.
lBefore connecting or disconnecting the ECM harness con-
nector, turn ignition switch OFF and disconnect battery
negative cable. Failure to do so may damage the ECM
because battery voltage is applied to ECM even if ignition
switch is turned off.
lBefore removing parts, turn ignition switch OFF and then
disconnect battery negative cable.
SEF289H
Page 992 of 3171
EC-12
PRECAUTIONS
lAfter performing each TROUBLE DIAGNOSIS, perform DTC
Confirmation Procedure or Overall Function Check.
The DTC should not be displayed in the DTC Confirmation
Procedure if the repair is completed. The Overall Function
Check should be a good result if the repair is completed.
lWhen measuring ECM signals with a circuit tester, never
allow the two tester probes to contact.
Accidental contact of probes will cause a short circuit and
damage the ECM power transistor.
lDo not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM's
transistor. Use a ground other than ECM terminals, such as
the ground.
lDo not disassemble fuel pump.
If NG, take proper action.
lDo not disassemble fuel injector.
If NG, replace fuel injector.
lDo not depress accelerator pedal when staring.
lImmediately after staring, do not rev up engine unnecessar-
ily.
lDo not rev up engine just prior to shutdown.
lWhen installing C.B. ham radio or a mobile phone, be sure
to observe the following as it may adversely affect elec-
tronic control systems depending on installation location.
–Keep the antenna as far as possible from the electronic
control units.
–Keep the antenna feeder line more than 20 cm (8 in) away
from the harness of electronic controls.
Do not let them run parallel for a long distance.
–Adjust the antenna and feeder line so that the standingwave
radio can be kept smaller.
–Be sure to ground the radio to vehicle body.
SAT652J
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