NISSAN X-TRAIL 2005 Service Repair Manual

EC-17
C
D
E
F
G
H
I
J
K
L
M
ECA
1570
On Board Diagnosis Logic ..................................1570
DTC Confirmation Procedure ..............................1570
Wiring Diagram ...................................................1571
Diagnostic Procedure ..........................................1573
Component Inspection ........................................1574
Removal and Installation .....................................1574
DTC P0642, P0643 SENSOR POWER SUPPLY ..1575
On Board Diagnosis Logic ..................................1575
DTC Confirmation Procedure ..............................1575
Wiring Diagram ...................................................1576
Diagnostic Procedure ..........................................1577
DTC P0652, P0653 SENSOR POWER SUPPLY ..1579
On Board Diagnosis Logic ..................................1579
DTC Confirmation Procedure ..............................1579
Wiring Diagram ...................................................1580
Diagnostic Procedure ..........................................1581
DTC P0686 ECM RELAY .......................................1584
On Board Diagnosis Logic ..................................1584
DTC Confirmation Procedure ..............................1584
Wiring Diagram ...................................................1585
Diagnostic Procedure ..........................................1586
Component Inspection ........................................1587
DTC P1211 TCS CONTROL UNIT ........................1588
Description ..........................................................1588
On Board Diagnosis Logic ..................................1588
DTC Confirmation Procedure ..............................1588
Diagnostic Procedure ..........................................1588
DTC P1212 TCS COMMUNICATION LINE ...........1589
Description ..........................................................1589
On Board Diagnosis Logic ..................................1589
DTC Confirmation Procedure ..............................1589
Diagnostic Procedure ..........................................1589
DTC P1260 - P1267 FUEL INJECTOR ADJUST-
MENT RESISTOR ..................................................1590
Description ..........................................................1590
On Board Diagnosis Logic ..................................1590
DTC Confirmation Procedure ..............................1591
Wiring Diagram ...................................................1592
Diagnostic Procedure ..........................................1593
Component Inspection ........................................1594
Removal and Installation .....................................1595
DTC P1268 - P1271 FUEL INJECTOR .................1596
Component Description .......................................1596
CONSULT-II Reference Value in Data Monitor Mode
1596
On Board Diagnosis Logic ..................................1596
DTC Confirmation Procedure ..............................1597
Wiring Diagram ...................................................1598
Diagnostic Procedure ..........................................1600
Component Inspection ........................................1601
Removal and Installation .....................................1601
DTC P1272 FUEL PUMP .......................................1602
Description ..........................................................1602
CONSULT-II Reference Value in Data Monitor Mode
1602
On Board Diagnosis Logic ..................................1602
DTC Confirmation Procedure ..............................1602
Wiring Diagram ...................................................1604Diagnostic Procedure ..........................................1605
Component Inspection .........................................1607
Removal and Installation .....................................1607
DTC P1273 FUEL PUMP .......................................1609
Description ...........................................................1609
CONSULT-II Reference Value in Data Monitor Mode
1609
On Board Diagnosis Logic ...................................1609
DTC Confirmation Procedure ..............................1609
Wiring Diagram ....................................................1610
Diagnostic Procedure ..........................................1611
Component Inspection .........................................1613
Removal and Installation .....................................1613
DTC P1274 FUEL PUMP .......................................1614
Description ...........................................................1614
CONSULT-II Reference Value in Data Monitor Mode
1614
On Board Diagnosis Logic ...................................1614
DTC Confirmation Procedure ..............................1614
Wiring Diagram ....................................................1615
Diagnostic Procedure ..........................................1617
Component Inspection .........................................1618
Removal and Installation .....................................1618
DTC P1275 FUEL PUMP .......................................1619
Description ...........................................................1619
CONSULT-II Reference Value in Data Monitor Mode
1619
On Board Diagnosis Logic ...................................1619
DTC Confirmation Procedure ..............................1619
Wiring Diagram ....................................................1620
Diagnostic Procedure ..........................................1622
Component Inspection .........................................1623
Removal and Installation .....................................1623
DTC P2135 APP SENSOR ....................................1624
Description ...........................................................1624
CONSULT-II Reference Value in Data Monitor Mode
1624
On Board Diagnosis Logic ...................................1624
DTC Confirmation Procedure ..............................1624
Wiring Diagram ....................................................1626
Diagnostic Procedure ..........................................1628
Component Inspection .........................................1630
Removal and Installation .....................................1630
DTC P2146, P2149 FUEL INJECTOR POWER SUP-
PLY .........................................................................1631
Component Description .......................................1631
CONSULT-II Reference Value in Data Monitor Mode
1631
On Board Diagnosis Logic ...................................1631
DTC Confirmation Procedure ..............................1631
Wiring Diagram ....................................................1632
Diagnostic Procedure ..........................................1634
DTC P2147, P2148 FUEL INJECTOR CIRCUIT ...1635
Component Description .......................................1635
CONSULT-II Reference Value in Data Monitor Mode
1635
On Board Diagnosis Logic ...................................1635
DTC Confirmation Procedure ..............................1635
Wiring Diagram ....................................................1636

EC-18 Diagnostic Procedure ..........................................1638
Component Inspection .........................................1640
Removal and Installation .....................................1640
DTC P2228, P2229 BARO SENSOR .....................1641
Description ...........................................................1641
On Board Diagnosis Logic ...................................1641
DTC Confirmation Procedure ..............................1641
Diagnostic Procedure ..........................................1642
GLOW CONTROL SYSTEM ..................................1643
Description ...........................................................1643
Wiring Diagram ....................................................1644
Diagnostic Procedure ..........................................1646
Component Inspection .........................................1650
Removal and Installation .....................................1650
EGR VOLUME CONTROL SYSTEM .....................1651
Description ...........................................................1651
CONSULT-II Reference Value in Data Monitor Mode
1652
Wiring Diagram ....................................................1653
Diagnostic Procedure ..........................................1655
Component Inspection .........................................1656
Removal and Installation .....................................1658
TC BOOST CONTROL SOLENOID VALVE ..........1659
Description ...........................................................1659
Wiring Diagram ....................................................1660
Diagnostic Procedure ..........................................1661
Component Inspection .........................................1663
Removal and Installation .....................................1663
BRAKE SWITCH ....................................................1664
Description ...........................................................1664
CONSULT-II Reference Value in Data Monitor Mode
1664
Wiring Diagram ....................................................1665
Diagnostic Procedure ..........................................1667
Component Inspection .........................................1671
PNP SWITCH .........................................................1673
Description ...........................................................1673
CONSULT-II Reference Value in Data Monitor Mode
1673Wiring Diagram ....................................................1674
Diagnostic Procedure ...........................................1675
PSP SWITCH ..........................................................1677
Component Description .......................................1677
CONSULT-II Reference Value in Data Monitor Mode
1677
Wiring Diagram ....................................................1678
Diagnostic Procedure ...........................................1679
Component Inspection .........................................1680
Removal and Installation ......................................1681
FUEL TRANSPORT PUMP ....................................1682
Description ...........................................................1682
Wiring Diagram ....................................................1683
Diagnostic Procedure ...........................................1685
Component Inspection .........................................1689
Removal and Installation ......................................1689
AUTOMATIC SPEED CONTROL DEVICE (ASCD) 1690
System Description ..............................................1690
Component Description .......................................1691
ASCD INDICATOR .................................................1692
Component Description .......................................1692
Wiring Diagram—LHD Models .............................1693
Wiring Diagram—RHD Models ............................1694
Diagnostic Procedure ...........................................1695
START SIGNAL ......................................................1696
Wiring Diagram ....................................................1696
Diagnostic Procedure ...........................................1697
MI & DATA LINK CONNECTORS ..........................1699
Wiring Diagram ....................................................1699
SERVICE DATA AND SPECIFICATIONS (SDS) ...1701
General Specifications .........................................1701
Mass Air Flow Sensor ..........................................1701
Engine Coolant Temperature Sensor ...................1701
Fuel Rail Pressure Sensor ...................................1701
Glow Plug .............................................................1701
EGR Volume Control Valve ..................................1701
Crankshaft Position Sensor .................................1701
Camshaft Position Sensor ...................................1701

INDEX FOR DTC
EC-19
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

[QR (WITH EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS010KY
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-46, "
IDENTIFICATION PLATE" .
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-133, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3
A/T 1ST GR FNCTN P0731 0731 2×AT-125
A/T 2ND GR FNCTN P0732 0732 2×AT-130
A/T 3RD GR FNCTN P0733 0733 2×AT-135
A/T 4TH GR FNCTN P0734 0734 2×AT-140
APP SEN 1/CIRC P2122 2122 1×EC-409
APP SEN 1/CIRC P2123 2123 1×EC-409
APP SEN 2/CIRC P2127 2127 1×EC-416
APP SEN 2/CIRC P2128 2128 1×EC-416
APP SENSOR P2138 2138 1×EC-432
ASCD BRAKE SW*8P1572 1572 1 —EC-387
ASCD SW *8P1564 1564 1 —EC-377
ASCD VHL SPD SEN*8P1574 1574 1 —EC-396
ATF TEMP SEN/CIRC P0710 0710 2×AT-106
BRAKE SW/CIRCUIT P1805 1805 2 —EC-405
CAN COMM CIRCUIT U1000
1000*51 (A/T)
2 (M/T)× (A/T)
— (M/T)EC-133
CAN COMM CIRCUIT U1001
1001*52—EC-133
CKP SEN/CIRCUIT P0335 0335 2×EC-250
CMP SEN/CIRC-B1 P0340 0340 2×EC-257
CTP LEARNING P1225 1225 2 —EC-368
CTP LEARNING P1226 1226 2 —EC-370
CYL 1 MISFIRE P0301 0301 2×EC-239
CYL 2 MISFIRE P0302 0302 2×EC-239
CYL 3 MISFIRE P0303 0303 2×EC-239
CYL 4 MISFIRE P0304 0304 2×EC-239
ECM P0605 0605 1 or 2× or —EC-283
ECM BACK UP/CIRCUIT P1065 1065 2×EC-286
ECT SEN/CIRC P0117 0117 1×EC-165
ECT SEN/CIRC P0118 0118 1×EC-165
ENG OVER TEMP P1217 1217 1×EC-352
ENGINE SPEED SIG P0725 0725 2×AT- 11 9
ETC ACTR P1121 1121 1×EC-294
ETC FUNCTION/CIRC P1122 1122 1×EC-296
E T C M O T P 11 2 8 11 2 8 1×EC-314
ETC MOT PWR P1124 1124 1×EC-306
ETC MOT PWR P1126 1126 1×EC-306

EC-20
[QR (WITH EURO-OBD)]
INDEX FOR DTC

FUEL SYS-LEAN-B1 P0171 0171 2×EC-219
FUEL SYS-RICH-B1 P0172 0172 2×EC-225
HO2S1 (B1) P0132 0132 2×EC-179
HO2S1 (B1) P0133 0133 2×EC-186
HO2S1 (B1) P0134 0134 2×EC-196
HO2S1 (B1) P1143 1143 2×EC-322
HO2S1 (B1) P1144 1144 2×EC-328
HO2S1 HTR (B1) P0031 0031 2×EC-139
HO2S1 HTR (B1) P0032 0032 2×EC-139
HO2S2 (B1) P0138 0138 2×EC-204
HO2S2 (B1) P0139 0139 2×EC-211
HO2S2 (B1) P1146 1146 2×EC-334
HO2S2 (B1) P1147 1147 2×EC-342
HO2S2 HTR (B1) P0037 0037 2×EC-145
HO2S2 HTR (B1) P0038 0038 2×EC-145
IAT SEN/CIRCUIT P0112 0112 2×EC-159
IAT SEN/CIRCUIT P0113 0113 2×EC-159
INT/V TIM CONT-B1 P0011 0011 2 —EC-136
I N T / V T I M V / C I R - B 1 P 1111 1111 2×EC-290
KNOCK SEN/CIRC-B1 P0327 0327 2 —EC-245
KNOCK SEN/CIRC-B1 P0328 0328 2 —EC-245
L/PRESS SOL/CIRC P0745 0745 2×AT- 1 5 4
MAF SEN/CIRCUIT P0102 0102 1×EC-151
MAF SEN/CIRCUIT P0103 0103 1×EC-151
MULTI CYL MISFIRE P0300 0300 2×EC-239
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 —BL-108
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4—
Flashing*4EC-65
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
O/R CLTCH SOL/CIRC P1760 1760 2×AT- 1 7 8
P-N POS SW/CIRCUIT P1706 1706 2×EC-398
PNP SW/CIRC P0705 0705 2×AT- 1 0 0
PURG VOLUME CONT/V P0444 0444 2×EC-269
PW ST P SEN/CIRC P0550 0550 2 —EC-278
SENSOR POWER/CIRC P1229 1229 1×EC-372
SFT SOL A/CIRC P0750 0750 1×AT- 1 6 1
SFT SOL B/CIRC P0755 0755 1×AT- 1 6 7
TCC SOLENOID/CIRC P0740 0740 2×AT- 1 4 8
TCS C/U FUNCTN*6P1211 1211 2 —EC-350
TCS/CIRC*6P1212 1212 2 —EC-351
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
EC-21
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: When engine is running
*5: The troubleshooting for this DTC needs CONSULT-II.
*6: For models with ESP system
*7: When the fail-safe operation for both self-diagnoses occur, the MI illuminates.
*8: For QR25DE engine models
DTC No. IndexEBS010KZ
NOTE:
If DTC U1000 or U1001 is displayed with other DTC, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-133, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
TP SEN 1/CIRC P0222 0222 1×EC-231
TP SEN 1/CIRC P0223 0223 1×EC-231
TP SEN 2/CIRC P0122 0122 1×EC-171
TP SEN 2/CIRC P0123 0123 1×EC-171
TP SENSOR P2135 2135 1×EC-424
TP SEN/CIRC A/T P1705 1705 1×AT-173
TW CATALYST SYS-B1 P0420 0420 2×EC-264
V/SP SEN (A/T OUT) P1720 1720 2 —EC-403
VEH SPD SEN/CIR AT*7P0720 0720 2×AT- 11 2
VEH SPEED SEN/CIRC*7P0500 0500 2×EC-276
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-65
U1000
1000*5CAN COMM CIRCUIT1 (A/T)
2 (M/T)× (A/T)
— (M/T)EC-133
U1001
1001*5CAN COMM CIRCUIT 2 —EC-133
P0000 0000NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.———
P0011 0011 INT/V TIM CONT-B1 2 —EC-136
P0031 0031 HO2S1 HTR (B1) 2×EC-139
P0032 0032 HO2S1 HTR (B1) 2×EC-139
P0037 0037 HO2S2 HTR (B1) 2×EC-145
P0038 0038 HO2S2 HTR (B1) 2×EC-145
P0102 0102 MAF SEN/CIRCUIT 1×EC-151
P0103 0103 MAF SEN/CIRCUIT 1×EC-151
P0112 0112 IAT SEN/CIRCUIT 2×EC-159
P0113 0113 IAT SEN/CIRCUIT 2×EC-159
P0117 0117 ECT SEN/CIRC 1×EC-165
P0118 0118 ECT SEN/CIRC 1×EC-165
P0122 0122 TP SEN 2/CIRC 1×EC-171

EC-22
[QR (WITH EURO-OBD)]
INDEX FOR DTC

P0123 0123 TP SEN 2/CIRC 1×EC-171
P0132 0132 HO2S1 (B1) 2×EC-179
P0133 0133 HO2S1 (B1) 2×EC-186
P0134 0134 HO2S1 (B1) 2×EC-196
P0138 0138 HO2S2 (B1) 2×EC-204
P0139 0139 HO2S2 (B1) 2×EC-211
P0171 0171 FUEL SYS-LEAN-B1 2×EC-219
P0172 0172 FUEL SYS-RICH-B1 2×EC-225
P0222 0222 TP SEN 1/CIRC 1×EC-231
P0223 0223 TP SEN 1/CIRC 1×EC-231
P0300 0300 MULTI CYL MISFIRE 2×EC-239
P0301 0301 CYL 1 MISFIRE 2×EC-239
P0302 0302 CYL 2 MISFIRE 2×EC-239
P0303 0303 CYL 3 MISFIRE 2×EC-239
P0304 0304 CYL 4 MISFIRE 2×EC-239
P0327 0327 KNOCK SEN/CIRC-B1 2 —EC-245
P0328 0328 KNOCK SEN/CIRC-B1 2 —EC-245
P0335 0335 CKP SEN/CIRCUIT 2×EC-250
P0340 0340 CMP SEN/CIRC-B1 2×EC-257
P0420 0420 TW CATALYST SYS-B1 2×EC-264
P0444 0444 PURG VOLUME CONT/V 2×EC-269
P0500 0500
VEH SPEED SEN/CIRC*72×EC-276
P0550 0550 PW ST P SEN/CIRC 2 —EC-278
P0605 0605 ECM 1 or 2× or —EC-283
P0705 0705 PNP SW/CIRC 2×AT-100
P0710 0710 ATF TEMP SEN/CIRC 2×AT-106
P0720 0720
VEH SPD SEN/CIR AT*72×AT- 11 2
P0725 0725 ENGINE SPEED SIG 2×AT- 11 9
P0731 0731 A/T 1ST GR FNCTN 2×AT-125
P0732 0732 A/T 2ND GR FNCTN 2×AT-130
P0733 0733 A/T 3RD GR FNCTN 2×AT-135
P0734 0734 A/T 4TH GR FNCTN 2×AT-140
P0740 0740 TCC SOLENOID/CIRC 2×AT-148
P0745 0745 L/PRESS SOL/CIRC 2×AT-154
P0750 0750 SFT SOL A/CIRC 1×AT-161
P0755 0755 SFT SOL B/CIRC 1×AT-167
P1065 1065 ECM BACK UP/CIRCUIT 2×EC-286
P 1111 1111 I N T / V T I M V / C I R - B 1 2×EC-290
P1121 1121 ETC ACTR 1×EC-294
P1122 1122 ETC FUNCTION/CIRC 1×EC-296
P1124 1124 ETC MOT PWR 1×EC-306
P1126 1126 ETC MOT PWR 1×EC-306
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

INDEX FOR DTC
EC-23
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

*1: 1st trip DTC No. is the same as DTC No.
*2: This number is prescribed by ISO 15031-5.
*3: In Diagnostic Test Mode II (Self-diagnostic results), this number is controlled by NISSAN.
*4: When engine is running
*5: The troubleshooting for this DTC needs CONSULT-II.
*6: For models with ESP system
*7: When the fail-safe operations for both self-diagnoses occur, the MI illuminates.
*8: For QR25DE engine modelsP1128 1128 ETC MOT 1×EC-314
P1143 1143 HO2S1 (B1) 2×EC-322
P1144 1144 HO2S1 (B1) 2×EC-328
P1146 1146 HO2S2 (B1) 2×EC-334
P1147 1147 HO2S2 (B1) 2×EC-342
P1211 1211
TCS C/U FUNCTN*62—EC-350
P1212 1212
TCS/CIRC*62—EC-351
P1217 1217 ENG OVER TEMP 1×EC-352
P1225 1225 CTP LEARNING 2 —EC-368
P1226 1226 CTP LEARNING 2 —EC-370
P1229 1229 SENSOR POWER/CIRC 1×EC-372
P1564 1564
ASCD SW*81—EC-377
P1572 1572
ASCD BRAKE SW*81—EC-387
P1574 1574
ASCD VHL SPD SEN*81—EC-396
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 —BL-108
P1705 1705 TP SEN/CIRC A/T 1×AT-173
P1706 1706 P-N POS SW/CIRCUIT 2×EC-398
P1720 1720 V/SP SEN (A/T OUT) 2 —EC-403
P1760 1760 O/R CLTCH SOL/CIRC 2×AT-178
P1805 1805 BRAKE SW/CIRCUIT 2 —EC-405
P2122 2122 APP SEN 1/CIRC 1×EC-409
P2123 2123 APP SEN 1/CIRC 1×EC-409
P2127 2127 APP SEN 2/CIRC 1×EC-416
P2128 2128 APP SEN 2/CIRC 1×EC-416
P2135 2135 TP SENSOR 1×EC-424
P2138 2138 APP SENSOR 1×EC-432
DTC*1
Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
GST*
2ECM*3

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-74, "
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

PRECAUTIONS
EC-25
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC


Do not disassemble ECM.

If battery cable is disconnected, the memory will return to
the initial ECM values.
The ECM will now start to self-control at its initial values.
Engine operation can vary slightly when the cable 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 levers as far as they will go as shown in the
figure.

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-95, "
ECM Terminals and Reference Value" .

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).
PBIB1164E
PBIB1512E
PBIB0090E
MEF040D

EC-26
[QR (WITH EURO-OBD)]
PRECAUTIONS


After 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.

When measuring ECM signals with a circuit tester, connect
a break-out box (SST) and Y-cable adapter (SST) between
the ECM and ECM harness connector.

When 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.

Do 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.

Do not operate fuel pump when there is no fuel in lines.

Tighten fuel hose clamps to the specified torque.
SAT652J
SEF348N
PBIB0513E