2001 NISSAN X-TRAIL sensor

EC-19
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ECA ECM Terminals and Reference Value .................1508
On Board Diagnosis Logic ..................................1508
Overall Function Check .......................................1509
Wiring Diagram ...................................................1510
Diagnostic Procedure ..........................................1511
Main 12 Causes of Overheating ..........................1517
Component Inspection ........................................1518
DTC P1233 - P1234 SUCTION CONTROL VALVE 1519
Description ..........................................................1519
CONSULT-II Reference Value in Data Monitor Mode
1519
ECM Terminals and Reference Value .................1519
On Board Diagnosis Logic ..................................1520
DTC Confirmation Procedure ..............................1521
Wiring Diagram ...................................................1522
Diagnostic Procedure ..........................................1523
Component Inspection ........................................1523
Removal and Installation .....................................1524
DTC P1301 - P1304 FUEL INJECTOR ADJUST-
MENT RESISTOR .................................................. 1525
Description ..........................................................1525
ECM Terminals and Reference Value .................1525
On Board Diagnosis Logic ..................................1525
DTC Confirmation Procedure ..............................1525
Wiring Diagram ...................................................1526
Diagnostic Procedure ..........................................1527
Component Inspection ........................................1528
Removal and Installation .....................................1528
DTC P1305 FUEL LEAK .......................................1529
On Board Diagnosis Logic ..................................1529
DTC Confirmation Procedure ..............................1529
Diagnostic Procedure ..........................................1529
Removal and Installation .....................................1529
DTC P1510 ACCELERATOR PEDAL RELEASED
POSITION SWITCH ...............................................1531
Description ..........................................................1531
CONSULT-II Reference Value in Data Monitor Mode
1531
ECM Terminals and Reference Value .................1531
On Board Diagnosis Logic ..................................1532
DTC Confirmation Procedure ..............................1532
Wiring Diagram ...................................................1533
Diagnostic Procedure ..........................................1534
Component Inspection ........................................1535
Removal and Installation .....................................1535
DTC P1606 ECM ...................................................1536
Description ..........................................................1536
On Board Diagnosis Logic ..................................1536
DTC Confirmation Procedure ..............................
1536
Diagnostic Procedure ..........................................1536
DTC P1621 ECM RELAY .......................................1538
ECM Terminals and Reference valve ..................1538
On Board Diagnosis Logic ..................................1538
DTC Confirmation Procedure ..............................1538
Wiring Diagram ...................................................1539
Diagnostic Procedure ..........................................1540
Component Inspection ........................................1541DTC P1660 BATTERY VOLTAGE .........................1542
On Board Diagnosis Logic ...................................1542
DTC Confirmation Procedure ..............................1542
Diagnostic Procedure ..........................................1542
GLOW CONTROL SYSTEM ..................................1544
Description ...........................................................1544
ECM Terminals and Reference Value ..................1544
Wiring Diagram ....................................................1545
Diagnostic Procedure ..........................................1546
Component Inspection .........................................1550
Removal and Installation .....................................1550
EGR VOLUME CONTROL SYSTEM .....................1551
Description ...........................................................1551
CONSULT-II Reference Value in Data Monitor Mode
1551
ECM Terminals and Reference Value ..................1552
Wiring Diagram ....................................................1553
Diagnostic Procedure ..........................................1554
Component Inspection .........................................1556
Removal and Installation .....................................1557
BRAKE SWITCH ....................................................1558
Description ...........................................................1558
ECM Terminals and Reference Value ..................1558
Wiring Diagram ....................................................1559
Diagnostic Procedure ..........................................1560
Component Inspection .........................................1561
PARK/NEUTRAL POSITION (PNP) SWITCH .......1562
Description ...........................................................1562
CONSULT-II Reference Value in Data Monitor Mode
1562
ECM Terminals and Reference Value ..................1562
Wiring Diagram ....................................................1563
Diagnostic Procedure ..........................................1564
START SIGNAL .....................................................1566
Wiring Diagram ....................................................1566
Diagnostic Procedure ..........................................1567
POWER STEERING OIL PRESSURE SWITCH ....1568
Component Description .......................................1568
CONSULT-II Reference Value in Data Monitor Mode
1568
ECM Terminals and Reference Value ..................1568
Wiring Diagram ....................................................1569
Diagnostic Procedure ..........................................1570
Component Inspection .........................................1571
Removal and Installation .....................................1571
AIR CONDITIONER CONTROL ............................1572
Wiring Diagram ....................................................1572
MI & DATA LINK CONNECTORS ..........................1573
Wiring Diagram ....................................................1573
SERVICE DATA AND SPECIFICATIONS (SDS) ...1574
General Specifications ......................................... 1574
Mass Air Flow Sensor ..........................................1574
Engine Coolant Temperature Sensor ..................1574
Common Rail Fuel Pressure Sensor ...................1574
Crankshaft Position Sensor (TDC) ......................1574
Camshaft Position Sensor ...................................1574
Glow Plug ............................................................1574
EGR Volume Control Valve .................................1574

EC-20
[QR25(WITH EURO-OBD)]
INDEX FOR DTC
[QR25(WITH EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00M01
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the “Type approval number” on the
identification plate. Refer to GI-43, "
IDENTIFICATION PLATE" .
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-122
.
×: Applicable –: Not applicable
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
APP SENSOR P2138 2138 1×EC-373
APP SEN 1/CIRC P2122 2122 1×EC-355
APP SEN 1/CIRC P2123 2123 1×EC-355
APP SEN 2/CIRC P2127 2127 1×EC-361
APP SEN 2/CIRC P2128 2128 1×EC-361
A/T 1ST GR FNCTN P0731 0731 2×AT- 1 3 1
A/T 2ND GR FNCTN P0732 0732 2×AT- 1 3 7
A/T 3RD GR FNCTN P0733 0733 2×AT- 1 4 3
A/T 4TH GR FNCTN P0734 0734 2×AT- 1 4 9
ATF TEMP SEN/CIRC P0710 0710 2×AT- 11 6
BRAKE SW/CIRCUIT P1805 1805 2 –EC-349
CAN COMM CIRCUIT*6U1000
1000*51×EC-122
CKP SEN/CIRCUIT P0335 0335 2×EC-227
CMP SEN/CIRCUIT P0340 0340 2×EC-233
CTP LEARNING P1225 1225 2 –EC-337
CTP LEARNING P1226 1226 2 –EC-339
CYL 1 MISFIRE P0301 0301 2×EC-217
CYL 2 MISFIRE P0302 0302 2×EC-217
CYL 3 MISFIRE P0303 0303 2×EC-217
CYL 4 MISFIRE P0304 0304 2×EC-217
ECM P0605 0605 1 or 2× or –EC-260
ECM BACK UP/CIRC P1065 1065 2×EC-267
ECT SEN/CIRCUIT P0117 0117 1×EC-149
ECT SEN/CIRCUIT P0118 0118 1×EC-149
ENG OVER TEMP P1217 1217 1×EC-323
ENGINE SPEED SIG P0725 0725 2×AT- 1 2 7
ETC ACTR P1121 1121 1 or 2×EC-276
ETC FUNCTION/CIRC P1122 1122 1×EC-278
ETC MOT P1128 1128 1×EC-290
ETC MOT PWR P1124 1124 1×EC-285
ETC MOT PWR P1126 1126 1×EC-285
FUEL SYS-LEAN-B1 P0171 0171 2×EC-200
FUEL SYS-RICH-B1 P0172 0172 2×EC-206
HO2S1 (B1) P0132 0132 2×EC-163
HO2S1 (B1) P0133 0133 2×EC-169

INDEX FOR DTC
EC-21
[QR25(WITH EURO-OBD)]
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ECHO2S1 (B1) P0134 0134 2×EC-178
HO2S1 (B1) P1143 1143 2×EC-295
HO2S1 (B1) P1144 1144 2×EC-301
HO2S1 HTR (B1) P0031 0031 2×EC-128
HO2S1 HTR (B1) P0032 0032 2×EC-128
HO2S2 (B1) P0138 0138 2×EC-185
HO2S2 (B1) P0139 0139 2×EC-192
HO2S2 (B1) P1146 1146 2×EC-307
HO2S2 (B1) P1147 1147 2×EC-315
HO2S2 HTR (B1) P0037 0037 2×EC-133
HO2S2 HTR (B1) P0038 0038 2×EC-133
IAT SENSOR P0127 0127 2×EC-160
IAT SEN/CIRCUIT P0112 0112 2×EC-144
IAT SEN/CIRCUIT P0113 0113 2×EC-144
INT/V TIM CONT-B1 P0011 0011 2×EC-125
INT/V TIM V/CIR-B1 P1111 1111 2×EC-271
KNOCK SEN/CIRC-B1 P0327 0327 2 –EC-222
KNOCK SEN/CIRC-B1 P0328 0328 2 –EC-222
L/PRESS SOL/CIRC P0745 0745 2×AT-163
MAF SEN/CIRCUIT P0102 0102 1×EC-138
MAF SEN/CIRCUIT P0103 0103 1×EC-138
MIL/CIRC P0650 0650 2 –EC-263
MULTI CYL MISFIRE P0300 0300 2×EC-217
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 –EC-58
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4–
Flashing*4EC-59
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000–– –
O/R CLTCH SOL/CIRC P1760 1760 2×AT-185
P-N POS SW/CIRCUIT P1706 1706 2×EC-345
PNP SW/CIRC P0705 0705 2×AT- 11 0
PURG VOLUME CONT/V P0444 0444 2×EC-244
PURG VOLUME CONT/V P0445 0445 2×EC-244
PW ST P SEN/CIRC P0550 0550 2 –EC-255
SENSOR POWER/CIRC P1229 1229 1×EC-341
SFT SOL A/CIRC P0750 0750 1×AT-170
SFT SOL B/CIRC P0755 0755 1×AT-175
TCC SOLENOID/CIRC P0740 0740 2×AT-158
TP SEN 2/CIRC P0122 0122 1×EC-154
TP SEN 2/CIRC P0123 0123 1×EC-154
TP SENSOR P2135 2135 1×EC-367
TP SEN/CIRC A/T P1705 1705 1×AT-180
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

EC-22
[QR25(WITH EURO-OBD)]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: For A/T models.
*7: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates.
DTC No. IndexEBS00M02
Check if the vehicle is a model with Euro-OBD (E-OBD) system or not by the “Type approval number” on the
identification plate. Refer to GI-43, "
IDENTIFICATION PLATE" .
NOTE:
If DTC U1000 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000. Refer to
EC-122
.
×: Applicable –: Not applicable TP SEN 1/CIRC P0222 0222 1×EC-212
TP SEN 1/CIRC P0223 0223 1×EC-212
TW CATALYST SYS-B1 P0420 0420 2×EC-239
VEH SPD SEN/CIR AT*7P0720 0720 2×AT- 1 2 2
VEH SPEED SEN/CIRC*7P0500 0500 2×EC-250
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
No DTC
Flashing*4NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.–
Flashing*4EC-59
U1000
1000*5CAN COMM CIRCUIT*61×EC-122
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.–– –
P0011 0011 INT/V TIM CONT-B1 2×EC-125
P0031 0031 HO2S1 HTR (B1) 2×EC-128
P0032 0032 HO2S1 HTR (B1) 2×EC-128
P0037 0037 HO2S2 HTR (B1) 2×EC-133
P0038 0038 HO2S2 HTR (B1) 2×EC-133
P0102 0102 MAF SEN/CIRCUIT 1×EC-138
P0103 0103 MAF SEN/CIRCUIT 1×EC-138
P0112 0112 IAT SEN/CIRCUIT 2×EC-144
P0113 0113 IAT SEN/CIRCUIT 2×EC-144
P0117 0117 ECT SEN/CIRCUIT 1×EC-149
P0118 0118 ECT SEN/CIRCUIT 1×EC-149
P0122 0122 TP SEN 2/CIRC 1×EC-154
P0123 0123 TP SEN 2/CIRC 1×EC-154
P0127 0127 IAT SENSOR 2×EC-160
P0132 0132 HO2S1 (B1) 2×EC-163
P0133 0133 HO2S1 (B1) 2×EC-169
P0134 0134 HO2S1 (B1) 2×EC-178

EC-24
[QR25(WITH EURO-OBD)]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: These numbers are prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*4: When engine is running.
*5: The trouble shooting for this DTC needs CONSULT-II.
*6: For A/T models.
*7: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates. P1144 1144 HO2S1 (B1) 2×EC-301
P1146 1146 HO2S2 (B1) 2×EC-307
P1147 1147 HO2S2 (B1) 2×EC-315
P1217 1217 ENG OVER TEMP 1×EC-323
P1225 1225 CTP LEARNING 2 –EC-337
P1226 1226 CTP LEARNING 2 –EC-339
P1229 1229 SENSOR POWER/CIRC 1×EC-341
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 –EC-58
P1705 1705 TP SEN/CIRC A/T 1×AT-180
P1706 1706 P-N POS SW/CIRCUIT 2×EC-345
P1760 1760 O/R CLTCH SOL/CIRC 2×AT-185
P1805 1805 BRAKE SW/CIRCUIT 2 –EC-349
P2122 2122 APP SEN 1/CIRC 1×EC-355
P2123 2123 APP SEN 1/CIRC 1×EC-355
P2127 2127 APP SEN 2/CIRC 1×EC-361
P2128 2128 APP SEN 2/CIRC 1×EC-361
P2135 2135 TP SENSOR 1×EC-367
P2138 2138 APP SENSOR 1×EC-373
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

PRECAUTIONS
EC-25
[QR25(WITH EURO-OBD)]
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EC
PRECAUTIONSPFP:00001
Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT
BELT PRE-TENSIONER”
EBS00NBQ
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 harness connec-
tors.
On Board Diagnostic (OBD) System of Engine and A/TEBS00M04
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 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 PG-68, "
HAR-
NESS CONNECTOR" .
●Be sure to route and secure the harnesses properly after work. The interference of the harness
with a bracket, etc. may cause the 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.
PrecautionEBS00M05
●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 negative
battery terminal. 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

EC-26
[QR25(WITH EURO-OBD)]
PRECAUTIONS
●Do not disassemble ECM.
●If a battery terminal is disconnected, the memory will return
to the ECM value.
The ECM will now start to self-control at its initial value.
Engine operation can vary slightly when the terminal is dis-
connected. However, this is not an indication of a malfunc-
tion. Do not replace parts because of a slight variation.
●When connecting ECM harness connector, fasten it
securely with a lever as far as it will go as shown at right.
●When connecting or disconnecting pin connectors into or
from ECM, take care not to damage pin terminals (bend or
break).
Make sure that there are not any bends or breaks on ECM
pin terminal, when connecting pin connectors.
●Securely connect ECM harness connectors.
A poor connection can cause an extremely high (surge)
voltage to develop in coil and condenser, thus resulting in
damage to ICs.
●Keep engine control system harness at least 10 cm (4 in)
away from adjacent harness, to prevent engine control sys-
tem malfunctions due to receiving external noise, degraded
operation of ICs, etc.
●Keep engine control system parts and harness dry.
●Before replacing ECM, perform “ECM Terminals and Refer-
ence Value” inspection and make sure ECM functions prop-
erly. Refer to EC-819
.
●Handle mass air flow sensor carefully to avoid damage.
●Do not disassemble mass air flow sensor.
●Do not clean mass air flow sensor with any type of deter-
gent.
●Do not disassemble electric throttle control actuator.
●Even a slight leak in the air intake system can cause seri-
ous incidents.
●Do not shock or jar the camshaft position sensor (PHASE),
crankshaft position sensor (POS).
SEF707Y
SEF908W
PBIB0090E
MEF040D

PREPARATION
EC-29
[QR25(WITH EURO-OBD)]
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EC
PREPARATIONPFP:00002
Special Service ToolsEBS00M07
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Commercial Service ToolsEBS00M08
Tool number
Tool nameDescription
KV10117100
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
with 22 mm (0.87 in) hexagon nut
KV10114400
Heated oxygen
sensor wrenchLoosening or tightening heated oxygen sensors
a: 22 mm (0.87 in)
S-NT379
S-NT636
Tool name Description
Quick connector
releaseRemoving fuel tube quick connectors in engine
room
(Available in SEC. 164 of PARTS CATALOG:
Part No. 16441 6N210)
Fuel filler cap adapter Checking fuel tank vacuum relief valve opening
pressure
Socket wrench Removing and installing engine coolant
temperature sensor
PBIC0198E
S-NT653
S-NT705