NISSAN ALMERA 2001 Service Manual

ECM Terminals and Reference Value .....................578
Wiring Diagram ........................................................579
Diagnostic Procedure - Load Signal - .....................583
Diagnostic Procedure - Heater Control Panel
(Fan Switch) - ..........................................................589
Component Inspection .............................................590
MI & DATA LINK CONNECTORS..............................591
Wiring Diagram ........................................................591
SERVICE DATA AND SPECIFICATIONS (SDS).......593
Fuel Pressure Regulator..........................................593
Idle Speed and Ignition Timing ................................593
Mass Air Flow Sensor..............................................593
Intake Air Temperature Sensor ................................593
Engine Coolant Temperature Sensor ......................593
Throttle Position Sensor ..........................................593
Heated Oxygen Sensor 1 Heater (Front) ................593
Heated Oxygen Sensor 2 Heater (Rear).................593
Fuel Tank Temperature Sensor (Where Fitted) .......594
EGR Volume Control Valve (Where Fitted) .............594
EGR Temperature Sensor (Where Fitted) ...............594
EVAP Canister Purge Volume Control Valve ..........594
IACV-AAC Valve ......................................................594
Injector .....................................................................594
Ignition Coil with Power Transistor ..........................594
Condenser ...............................................................594
Fuel Pump ...............................................................594
Crankshaft Position Sensor (POS) ..........................595
Camshaft Position Sensor (PHASE) .......................595
YD
TROUBLE DIAGNOSIS - INDEX................................596
Alphabetical & P No. Index for DTC .......................596
PRECAUTIONS...........................................................598
Supplemental Restraint System (SRS)²AIR
BAG²and²SEAT BELT PRE-TENSIONER²...........598
Engine Fuel & Emission Control System ................599
Precautions ..............................................................600
Wiring Diagrams and Trouble Diagnosis .................601
PREPARATION...........................................................602
Special Service Tools ..............................................602
ENGINE AND EMISSION CONTROL OVERALL
SYSTEM.......................................................................603
Engine Control Component Parts Location .............603
Circuit Diagram ........................................................606
System Diagram ......................................................608
System Chart ...........................................................609
ENGINE AND EMISSION BASIC CONTROL
SYSTEM DESCRIPTION.............................................610
Fuel Injection Control System .................................610
Fuel Injection Timing Control System...................... 611
Air Conditioning Cut Control ....................................612Fuel Cut Control (at no load & high engine
speed) ......................................................................612
Crankcase Ventilation System .................................613
BASIC SERVICE PROCEDURE.................................614
Injection Tube and Injection Nozzle ........................614
Electronic Control Fuel Injection Pump ...................618
Fuel Filter .................................................................625
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION.............................................................627
DTC and MI Detection Logic ...................................627
Diagnostic Trouble Code (DTC) ..............................627
Malfunction Indicator (MI) ........................................628
CONSULT-II .............................................................632
TROUBLE DIAGNOSIS - INTRODUCTION................637
Introduction ..............................................................637
Work Flow ................................................................639
TROUBLE DIAGNOSIS - BASIC INSPECTION.........641
Basic Inspection.......................................................641
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION.............................................................646
Symptom Matrix Chart .............................................646
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................656
Major Sensor Reference Graph in Data Monitor
Mode ........................................................................658
ECM Terminals and Reference Value .....................659
TROUBLE DIAGNOSIS FOR INTERMITTENT
INCIDENT.....................................................................665
Description ...............................................................665
Diagnostic Procedure ..............................................665
TROUBLE DIAGNOSIS FOR POWER SUPPLY........666
Main Power Supply and Ground Circuit ..................666
DTC P0100 MASS AIR FLOW SEN...........................673
Component Description ...........................................673
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................673
ECM Terminals and Reference Value .....................673
On Board Diagnosis Logic.......................................673
DTC Confirmation Procedure ..................................673
Wiring Diagram ........................................................675
Diagnostic Procedure ..............................................677
DTC P0115 COOLANT TEMP SEN............................680
Description ...............................................................680
On Board Diagnosis Logic.......................................680
DTC Confirmation Procedure ..................................680
Wiring Diagram ........................................................682
Diagnostic Procedure ..............................................683
DTC P0120 ACCEL POS SENSOR............................685
Description ...............................................................685
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................685
ECM Terminals and Reference Value .....................685
CONTENTS(Cont'd)
EC-7

On Board Diagnosis Logic.......................................686
DTC Confirmation Procedure ..................................686
Wiring Diagram ........................................................687
Diagnostic Procedure ..............................................688
DTC P0335 CRANK POS SEN (TDC)........................695
Description ...............................................................695
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................695
ECM Terminals and Reference Value .....................695
On Board Diagnosis Logic.......................................695
DTC Confirmation Procedure ..................................696
Wiring Diagram ........................................................697
Diagnostic Procedure ..............................................698
DTC P0500 VEHICLE SPEED SEN............................701
Description ...............................................................701
ECM Terminals and Reference Value .....................701
On Board Diagnosis Logic.......................................701
Overall Function Check ...........................................701
Wiring Diagram ........................................................703
Diagnostic Procedure ..............................................705
DTC P0571 BRAKE SW..............................................706
Description ...............................................................706
ECM Terminals and Reference Value .....................706
On Board Diagnosis Logic.......................................706
DTC Confirmation Procedure ..................................706
Wiring Diagram ........................................................708
Diagnostic Procedure ..............................................710
DTC P1107 ECM 10....................................................714
Description ...............................................................714
On Board Diagnosis Logic.......................................714
DTC Confirmation Procedure ..................................714
Diagnostic Procedure ..............................................715
DTC P1180 P9.FUEL TEMP SEN...............................716
Description ...............................................................716
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................716
ECM Terminals and Reference Value .....................717
On Board Diagnosis Logic.......................................717
DTC Confirmation Procedure ..................................717
Wiring Diagram ........................................................719
Diagnostic Procedure ..............................................721
DTC P1202 FUEL CUT SYSTEM2.............................723
Description ...............................................................723
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................723
ECM Terminals and Reference Value .....................724
On Board Diagnosis Logic.......................................724
DTC Confirmation Procedure ..................................724
Wiring Diagram ........................................................726
Diagnostic Procedure ..............................................728
DTC P1217 OVER HEAT............................................730
Description ...............................................................730CONSULT-II Reference Value in Data Monitor
Mode ........................................................................730
ECM Terminals and Reference Value .....................730
On Board Diagnosis Logic.......................................731
Overall Function Check ...........................................732
Wiring Diagram ........................................................733
Diagnostic Procedure ..............................................735
Main 12 Causes of Overheating..............................756
DTC P1241 P7.F/INJ TIMG FB...................................757
Description ...............................................................757
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................757
ECM Terminals and Reference Value .....................758
On Board Diagnosis Logic.......................................758
DTC Confirmation Procedure ..................................758
Wiring Diagram ........................................................760
Diagnostic Procedure ..............................................762
DTC P1251 P4.SPILL/V CIRC....................................764
Description ...............................................................764
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................764
ECM Terminals and Reference Value .....................765
On Board Diagnosis Logic.......................................765
DTC Confirmation Procedure ..................................765
Wiring Diagram ........................................................767
Diagnostic Procedure ..............................................769
DTC P1337 P2.DTC PULSE SIG................................771
Description ...............................................................771
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................771
ECM Terminals and Reference Value .....................772
On Board Diagnosis Logic.......................................772
DTC Confirmation Procedure ..................................772
Wiring Diagram ........................................................774
Diagnostic Procedure ..............................................776
DTC P1341 P1.CAM POS SEN..................................778
Description ...............................................................778
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................778
ECM Terminals and Reference Value .....................779
On Board Diagnosis Logic.......................................779
DTC Confirmation Procedure ..................................779
Wiring Diagram ........................................................781
Diagnostic Procedure ..............................................783
DTC P1600 P3.PUMP COMM LINE............................785
Description ...............................................................785
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................785
ECM Terminals and Reference Value .....................786
On Board Diagnosis Logic.......................................786
DTC Confirmation Procedure ..................................786
Wiring Diagram ........................................................788
CONTENTS(Cont'd)
EC-8

Diagnostic Procedure ..............................................790
DTC P1603 ECM 12, DTC P1607 ECM 2...................792
Description ...............................................................792
On Board Diagnosis Logic.......................................792
DTC Confirmation Procedure ..................................792
Diagnostic Procedure ..............................................793
DTC P1620 ECM RLY.................................................794
ECM Terminals and Reference Value .....................794
On Board Diagnosis Logic.......................................794
DTC Confirmation Procedure ..................................794
Wiring Diagram ........................................................795
Diagnostic Procedure ..............................................797
DTC P1621 ECM 15....................................................799
Description ...............................................................799
On Board Diagnosis Logic.......................................799
DTC Confirmation Procedure ..................................799
Diagnostic Procedure ..............................................800
DTC P1660 BATTERY VOLTAGE..............................801
On Board Diagnosis Logic.......................................801
DTC Confirmation Procedure ..................................801
Diagnostic Procedure ..............................................801
DTC P1690 P5.PUMP C/MODULE.............................803
Description ...............................................................803
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................803
ECM Terminals and Reference Value .....................804
On Board Diagnosis Logic.......................................804
DTC Confirmation Procedure ..................................804
Diagnostic Procedure ..............................................805
GLOW CONTROL SYSTEM.......................................806
Description ...............................................................806
ECM Terminals and Reference Value .....................807Wiring Diagram ........................................................808
Diagnostic Procedure ..............................................809
EGR VOLUME CONTROL SYSTEM..........................815
Description ...............................................................815
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................816
ECM Terminals and Reference Value .....................816
Wiring Diagram ........................................................817
Diagnostic Procedure ..............................................819
START SIGNAL...........................................................823
Wiring Diagram ........................................................823
Diagnostic Procedure ..............................................824
PARK/NEUTRAL POSITION (PNP) SWITCH
(WHERE FITTED)........................................................826
Description ...............................................................826
CONSULT-II Reference Value in Data Monitor
Mode ........................................................................826
ECM Terminals and Reference Value .....................826
Wiring Diagram ........................................................827
Diagnostic Procedure ..............................................828
AIR CONDITIONER CONTROL..................................830
Wiring Diagram ........................................................830
MI & DATA LINK CONNECTORS..............................831
Wiring Diagram ........................................................831
SERVICE DATA AND SPECIFICATIONS (SDS).......834
General Specifications .............................................834
Injection Nozzle .......................................................834
Engine Coolant Temperature Sensor ......................834
Crankshaft Position Sensor (TDC) ..........................834
Glow Plug ................................................................834
Accelerator Position Sensor ....................................834
EGR Volume Control Valve .....................................834
CONTENTS(Cont'd)
EC-9

Alphabetical & P No. Index for DTCNJEC0001Check if the vehicle is a model with the Euro-OBD (E-OBD) system or not by referring to the ªType approval
numberº on the identification plate.
Refer to GI-40, ªIDENTIFICATION PLATEº.
Type approval number Model
Available With Euro-OBD system
Not available Without Euro-OBD system
MODELS WITH EURO-OBD SYSTEMNJEC0001S03Alphabetical Index for DTCNJEC0001S0301
Items
(CONSULT-II screen terms)DTC*6
Reference page
CONSULT-II
GST*2ECM*1*7
Unable to access ECM Ð Ð EC-154
AIR TEMP SEN/CIRC P0110 0110 EC-194
A/T 1ST GR FNCTN P0731 0731 AT-204
A/T 2ND GR FNCTN P0732 0732 AT-211
A/T 3RD GR FNCTN P0733 0733 AT-217
A/T 4TH GR FNCTN P0734 0734 AT-223
A/T DIAG COMM LINE P1605 1605 EC-434
ATF TEMP SEN/CIRC P0710 0710 AT-189
CMP SEN/CIRCUIT P0340 0340 EC-335
CLOSED TP SW/CIRC*7 P0510 0510 EC-385
COOLANT T SEN/CIRC*3 P0115 0115 EC-201
CKP SEN/CIRCUIT P0335 0335 EC-328
CYL 1 MISFIRE P0301 0301 EC-318
CYL 2 MISFIRE P0302 0302 EC-318
CYL 3 MISFIRE P0303 0303 EC-318
CYL 4 MISFIRE P0304 0304 EC-318
ECM P0605 0605 EC-391
EGR SYSTEM*7 P0400 0400 EC-343
EGR SYSTEM*7 P1402 1402 EC-425
EGR TEMP SEN/CIRC*7 P1401 1401 EC-418
EGR VOL CON/V CIR*7 P0403 0403 EC-352
ENGINE SPEED SIG P0725 0725 AT-200
ENG OVER TEMP P1217 1217 EC-406
FUEL SYS-LEAN/BK1 P0171 0171 EC-297
FUEL SYS-RICH/BK1 P0172 0172 EC-305
FUEL TEMP SEN/CIRC*7 P0180 0180 EC-313
HO2S1 HTR (B1) P0135 0135 EC-252
HO2S1 (B1) P0130 0130 EC-216
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC
EC-10

Items
(CONSULT-II screen terms)DTC*6
Reference page
CONSULT-II
GST*2ECM*1*7
HO2S1 (B1) P0131 0131 EC-224
HO2S1 (B1) P0132 0132 EC-230
HO2S1 (B1) P0133 0133 EC-236
HO2S1 (B1) P0134 0134 EC-245
HO2S2 (B1) P0137 0137 EC-258
HO2S2 (B1) P0138 0138 EC-267
HO2S2 (B1) P0139 0139 EC-275
HO2S2 (B1) P0140 0140 EC-284
HO2S2 HTR (B1) P0141 0141 EC-291
IACV/AAC VLV/CIRC P0505 0505 EC-376
INT/V TIM V/CIR-B1 P1111 1111EC-393
KNOCK SEN/CIRC-B1 P0325 0325 EC-324
L/PRESS SOL/CIRC P0745 0745 AT-239
MAF SEN/CIRCUIT*3 P0100 0100 EC-187
MULTI CYL MISFIRE P0300 0300 EC-318
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EL-430
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ 0000 Ð
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ Flashing*5 EC-75
O/R CLTCH SOL/CIRC P1760 1760 AT-268
PNP SW/CIRC P0705 0705 AT-183
P-N POS SW/CIRCUIT P1706 1706 EC-437
PURG VOLUME CONT/V P0443 0443 EC-364
SFT SOL A/CIRC P0750 0750 AT-246
SFT SOL B/CIRC P0755 0755 AT-252
SWRL CONT SOL/V*7 P1131 1131 EC-399
TCC SOLENOID/CIRC P0740 0740 AT-233
THRTL POS SEN/CIRC*3 P0120 0120 EC-207
TP SEN/CIRC A/T P1705 1705 AT-258
TW CATALYST SYS-B1 P0420 0420 EC-359
VEH SPD SEN/CIR AT P0720 0720 AT-195
VEH SPEED SEN/CIRC*4 P0500 0500 EC-370
*1: In Diagnostic Test Mode II (Self-diagnostic results). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-11

*7: If so equipped
P No. Index for DTCNJEC0001S0302
DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1*7
Ð Ð Unable to access ECM EC-154
Ð Flashing*5NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.EC-75
Ð 0000NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.Ð
P0100 0100 MAF SEN/CIRCUIT*3 EC-187
P0110 0110 AIR TEMP SEN/CIRC EC-194
P0115 0115 COOLANT T SEN/CIRC*3 EC-201
P0120 0120 THRTL POS SEN/CIRC*3 EC-207
P0130 0130 HO2S1 (B1) EC-216
P0131 0131 HO2S1 (B1) EC-224
P0132 0132 HO2S1 (B1) EC-230
P0133 0133 HO2S1 (B1) EC-236
P0134 0134 HO2S1 (B1) EC-245
P0135 0135 HO2S1 HTR (B1) EC-252
P0137 0137 HO2S2 (B1) EC-258
P0138 0138 HO2S2 (B1) EC-267
P0139 0139 HO2S2 (B1) EC-275
P0140 0140 HO2S2 (B1) EC-284
P0141 0141 HO2S2 HTR (B1) EC-291
P0171 0171 FUEL SYS-LEAN/BK1 EC-297
P0172 0172 FUEL SYS-RICH/BK1 EC-305
P0180 0180 FUEL TEMP SEN/CIRC*7 EC-313
P0300 0300 MULTI CYL MISFIRE EC-318
P0301 0301 CYL 1 MISFIRE EC-318
P0302 0302 CYL 2 MISFIRE EC-318
P0303 0303 CYL 3 MISFIRE EC-318
P0304 0304 CYL 4 MISFIRE EC-318
P0325 0325 KNOCK SEN/CIRC-B1 EC-324
P0335 0335 CKP SEN/CIRCUIT EC-328
P0340 0340 CMP SEN/CIRCUIT EC-335
P0400 0400 EGR SYSTEM*7 EC-343
P0403 0403 EGR VOL CON/V CIR*7 EC-352
P0420 0420 TW CATALYST SYS-B1 EC-359
P0443 0443 PURG VOLUME CONT/V EC-364
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-12

DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1*7
P0500 0500 VEH SPEED SEN/CIRC*4 EC-370
P0505 0505 IACV/AAC VLV/CIRC EC-376
P0510 0510 CLOSED TP SW/CIRC*7 EC-385
P0605 0605 ECM EC-391
P0705 0705 PNP SW/CIRC AT-183
P0710 0710 ATF TEMP SEN/CIRC AT-189
P0720 0720 VEH SPD SEN/CIR AT AT-195
P0725 0725 ENGINE SPEED SIG AT-200
P0731 0731 A/T 1ST GR FNCTN AT-204
P0732 0732 A/T 2ND GR FNCTN AT-211
P0733 0733 A/T 3RD GR FNCTN AT-217
P0734 0734 A/T 4TH GR FNCTN AT-223
P0740 0740 TCC SOLENOID/CIRC AT-233
P0745 0745 L/PRESS SOL/CIRC AT-239
P0750 0750 SFT SOL A/CIRC AT-246
P0755 0755 SFT SOL B/CIRC AT-252
P 1111 1111INT/V TIM V/CIR-B1 EC-393
P1131 1131 SWRL CONT SOL/V*7 EC-399
P1217 1217 ENG OVER TEMP EC-406
P1401 1401 EGR TEMP SEN/CIRC*7 EC-418
P1402 1402 EGR SYSTEM*7 EC-425
P1605 1605 A/T DIAG COMM LINE EC-434
P1610 - 1615 1610 - 1615 NATS MALFUNCTION EL-430
P1705 1705 TP SEN/CIRC A/T AT-258
P1706 1706 P-N POS SW/CIRCUIT EC-437
P1760 1760 O/R CLTCH SOL/CIRC AT-268
*1: In Diagnostic Test Mode II (Self-diagnostic results). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
*7: If so equipped
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-13

MODELS WITHOUT EURO-OBD SYSTEMNJEC0001S04Alphabetical Index for DTCNJEC0001S0401
Items
(CONSULT-II screen terms)DTC*6
Reference page
CONSULT-II
GST*2ECM*1
Unable to access ECM Ð Ð EC-154
CKP SEN/CIRCUIT P0335 0335 EC-328
CMP SEN/CIRCUIT P0340 0340 EC-335
COOLANT T SEN/CIRC*3 P0115 0115 EC-201
ENG OVER TEMP P1217 1217 EC-406
HO2S1 (B1) P0130 0130 EC-216
KNOCK SEN/CIRC-B1 P0325 0325 EC-324
MAF SEN/CIRCUIT*3 P0100 0100 EC-187
NATS MALFUNCTION P1610 - P1615 1610 - 1615 EL-430
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ 0000 Ð
NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIREDÐ Flashing*5 EC-75
THRTL POS SEN/CIRC*3 P0120 0120 EC-207
VEH SPEED SEN/CIRC*4 P0500 0500 EC-370
*1: In Diagnostic Test Mode II (Self-diagnostic results) (If so equipped). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6.
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
P No. Index for DTCNJEC0001S0402
DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1
Ð Ð Unable to access ECM EC-154
Ð Flashing*5NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.EC-75
Ð 0000NO DTC IS DETECTED.
FURTHER TESTING MAYBE REQUIRED.Ð
P0100 0100 MAF SEN/CIRCUIT*3 EC-187
P0115 0115 COOLANT T SEN/CIRC*3 EC-201
P0120 0120 THRTL POS SEN/CIRC*3 EC-207
P0130 0130 HO2S1 (B1) EC-216
P0325 0325 KNOCK SEN/CIRC-B1 EC-324
P0335 0335 CKP SEN/CIRCUIT EC-328
P0340 0340 CMP SEN/CIRCUIT EC-335
P0500 0500 VEH SPEED SEN/CIRC*4 EC-370
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-14

DTC*6
Items
(CONSULT-II screen terms)Reference page
CONSULT-II
GST*2ECM*1
P1217 1217 ENG OVER TEMP EC-406
P1610 - 1615 1610 - 1615 NATS MALFUNCTION EL-430
*1: In Diagnostic Test Mode II (Self-diagnostic results) (If so equipped). These numbers are controlled by NISSAN.
*2: These numbers are prescribed by ISO 15031-6
*3: When the fail-safe operation occurs, the MI illuminates.
*4: The MI illuminates when the ªRevolution sensor signalº and the ªVehicle speed sensor signalº meet the fail-safe condition at the
same time.
*5: While engine is running.
*6: 1st trip DTC No. is the same as DTC No.
TROUBLE DIAGNOSIS Ð INDEXQG
Alphabetical & P No. Index for DTC (Cont'd)
EC-15

Supplemental Restraint System (SRS) ªAIR
BAGº and ªSEAT BELT PRE-TENSIONERº
NJEC0002The Supplemental Restraint System such as ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº used along with
a seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of
collision. The SRS system composition which is available to NISSAN MODEL N16 is as follows (The compo-
sition varies according to the destination and optional equipment.):
+For a frontal collision
The Supplemental Restraint System consists of driver air bag module (located in the center of the steer-
ing wheel), front passenger air bag module (located on the instrument panel on passenger side), front seat
belt pre-tensioners, a diagnoses sensor unit, warning lamp, wiring harness and spiral cable.
+For a side collision
The Supplemental Restraint System consists of front side air bag module (located in the outer side of front
seat), side air bag (satellite) sensor, diagnoses sensor unit (one of components of air bags for a frontal
collision), wiring harness, warning lamp (one of components of air bags for a frontal collision).
Information necessary to service the system safely is included in theRS sectionof 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 should be per-
formed by an authorized NISSAN 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 RS section.
+Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harness can be identified by yellow harness connector.
Precautions for On Board Diagnostic (OBD)
System of Engine and A/T
NJEC0003The 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 ªOFFº and disconnect the negative battery terminal 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 EL section, ªDescriptionº, ªHARNESS CONNEC-
TORº.
+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 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.
PRECAUTIONSQG
Supplemental Restraint System (SRS) ªAIR BAGº and ªSEAT BELT PRE-TENSIONERº
EC-16