brake NISSAN X-TRAIL 2001 Service User Guide

EC-13
C
D
E
F
G
H
I
J
K
L
M
ECA On Board Diagnosis Logic ..................................1018
DTC Confirmation Procedure ..............................1018
Wiring Diagram ...................................................1020
Diagnostic Procedure ..........................................1021
Component Inspection ........................................1022
DTC P1143 HO2S1 ................................................1023
Component Description .......................................1023
CONSULT-II Reference Value in Data Monitor Mode
1023
ECM Terminals and Reference Value .................1023
On Board Diagnosis Logic ..................................1024
DTC Confirmation Procedure ..............................1024
Overall Function Check .......................................1025
Diagnostic Procedure ..........................................1025
Component Inspection ........................................1027
Removal and Installation .....................................1028
DTC P1144 HO2S1 ................................................1029
Component Description .......................................1029
CONSULT-II Reference Value in Data Monitor Mode
1029
ECM Terminals and Reference Value .................1029
On Board Diagnosis Logic ..................................1030
DTC Confirmation Procedure ..............................1030
Overall Function Check .......................................1031
Diagnostic Procedure ..........................................1031
Component Inspection ........................................1033
Removal and Installation .....................................1034
DTC P1146 HO2S2 ................................................1035
Component Description .......................................1035
CONSULT-II Reference Value in Data Monitor Mode
1035
ECM Terminals and Reference Value .................1035
On Board Diagnosis Logic ..................................1035
DTC Confirmation Procedure ..............................1036
Overall Function Check .......................................1037
Wiring Diagram ...................................................1038
Diagnostic Procedure ..........................................1039
Component Inspection ........................................1040
Removal and Installation .....................................1041
DTC P1147 HO2S2 ................................................1042
Component Description .......................................1042
CONSULT-II Reference Value in Data Monitor Mode
1042
ECM Terminals and Reference Value .................1042
On Board Diagnosis Logic ..................................1042
DTC Confirmation Procedure ..............................1043
Overall Function Check .......................................1044
Wiring Diagram ...................................................1045
Diagnostic Procedure ..........................................1046
Component Inspection ........................................1047
Removal and Installation .....................................1048
DTC P1212 ESP/TCS/ABS COMMUNICATION
LINE .......................................................................1049
Description ..........................................................1049
On Board Diagnosis Logic ..................................1049
DTC Confirmation Procedure ..............................1049
Diagnostic Procedure ..........................................1049
DTC P1217 ENGINE OVER TEMPERATURE ......1050
System Description .............................................1050CONSULT-II Reference Value in Data Monitor Mode
1050
ECM Terminals and Reference Value ..................1051
On Board Diagnosis Logic ...................................1051
Overall Function Check .......................................1052
Wiring Diagram ....................................................1054
Diagnostic Procedure ..........................................1055
Main 12 Causes of Overheating ..........................1062
Component Inspection .........................................1063
DTC P1706 PNP SWITCH .....................................1064
Component Description .......................................1064
CONSULT-II Reference Value in Data Monitor Mode
1064
ECM Terminals and Reference Value ..................1064
On Board Diagnosis Logic ...................................1064
DTC Confirmation Procedure ..............................1064
Overall Function Check .......................................1065
Wiring Diagram ....................................................1066
Diagnostic Procedure ..........................................1067
DTC P1805 BRAKE SWITCH ................................1068
Description ...........................................................1068
CONSULT-II Reference Value in Data Monitor Mode
1068
ECM Terminals and Reference Value ..................1068
On Board Diagnosis Logic ...................................1068
DTC Confirmation Procedure ..............................1068
Wiring Diagram ....................................................1070
Diagnostic Procedure ..........................................1071
Component Inspection .........................................1072
IGNITION SIGNAL .................................................1074
Component Description .......................................1074
ECM Terminals and Reference Value ..................1074
Wiring Diagram ....................................................1075
Diagnostic Procedure ..........................................1077
Component Inspection .........................................1081
Removal and Installation .....................................1082
INJECTOR CIRCUIT ..............................................1083
Component Description .......................................1083
CONSULT-II Reference Value in Data Monitor Mode
1083
ECM Terminals and Reference Value ..................1083
Wiring Diagram ....................................................
1084
Diagnostic Procedure ..........................................1085
Component Inspection .........................................1087
Removal and Installation .....................................1087
START SIGNAL .....................................................1088
CONSULT-II Reference Value in Data Monitor Mode
1088
ECM Terminals and Reference Value ..................1088
Wiring Diagram ....................................................1089
Diagnostic Procedure ..........................................1090
FUEL PUMP CIRCUIT ...........................................1092
Description ...........................................................1092
CONSULT-II Reference Value in Data Monitor Mode
1092
ECM Terminals and Reference Value ..................1092
Wiring Diagram ....................................................1094
Diagnostic Procedure ..........................................1095

EC-16
On Board Diagnosis Logic ...................................1275
DTC Confirmation Procedure ..............................1276
Wiring Diagram ....................................................1277
Diagnostic Procedure ..........................................1278
Component Inspection .........................................1280
DTC P1123 THROTTLE CONTROL MOTOR RELAY 1281
Component Description .......................................1281
CONSULT-II Reference Value in Data Monitor Mode
1281
ECM Terminals and Reference Value ..................1281
On Board Diagnosis Logic ...................................1281
DTC Confirmation Procedure ..............................1281
Wiring Diagram ....................................................1283
Diagnostic Procedure ..........................................1284
Component Inspection .........................................1285
DTC P1212 ESP/TCS/ABS COMMUNICATION
LINE ........................................................................1286
Description ...........................................................1286
On Board Diagnosis Logic ...................................1286
DTC Confirmation Procedure ..............................1286
Diagnostic Procedure ..........................................1286
DTC P1217 ENGINE OVER TEMPERATURE .......1287
System Description ..............................................1287
CONSULT-II Reference Value in Data Monitor Mode
1287
ECM Terminals and Reference Value ..................1288
On Board Diagnosis Logic ...................................1288
Overall Function Check .......................................1289
Wiring Diagram ....................................................1291
Diagnostic Procedure ..........................................1292
Main 12 Causes of Overheating ..........................1299
Component Inspection .........................................1300
DTC P1805 BRAKE SWITCH ................................1301
Description ...........................................................1301
CONSULT-II Reference Value in Data Monitor Mode
1301
ECM Terminals and Reference Value ..................1301
On Board Diagnosis Logic ...................................1301
FAIL-SAFE MODE ...............................................1301
DTC Confirmation Procedure ..............................1301
Wiring Diagram ....................................................1303
Diagnostic Procedure ..........................................1304
Component Inspection .........................................1305
HO2S1 HEATER ....................................................1307
Description ...........................................................1307
CONSULT-II Reference Value in Data Monitor Mode
1307
ECM Terminals and Reference Value ..................1307
Wiring Diagram ....................................................1308
Diagnostic Procedure ..........................................1309
Component Inspection .........................................1311
Removal and Installation .....................................1311
HO2S2 HEATER ....................................................1312
Description ...........................................................1312
CONSULT-II Reference Value in Data Monitor Mode
1312
ECM Terminals and Reference Value ..................1312
Wiring Diagram ....................................................1313
Diagnostic Procedure ..........................................1314Component Inspection .........................................1315
Removal and Installation ......................................1315
IAT SENSOR ..........................................................1316
Component Description .......................................1316
Wiring Diagram ....................................................1317
Diagnostic Procedure ........................................... 1318
Component Inspection .........................................1319
Removal and Installation ......................................1319
HO2S1 ....................................................................1320
Component Description .......................................1320
CONSULT-II Reference Value in Data Monitor Mode
1320
ECM Terminals and Reference Value ..................1320
Wiring Diagram ....................................................1321
Diagnostic Procedure ........................................... 1322
Component Inspection .........................................1323
Removal and Installation ......................................1325
HO2S2 ....................................................................1326
Component Description .......................................1326
CONSULT-II Reference Value in Data Monitor Mode
1326
ECM Terminals and Reference Value ..................1326
Wiring Diagram ....................................................1327
Diagnostic Procedure ........................................... 1328
Component Inspection .........................................1329
Removal and Installation ......................................1330
IGNITION SIGNAL .................................................1331
Component Description .......................................1331
ECM Terminals and Reference Value ..................1331
Wiring Diagram ....................................................1332
Diagnostic Procedure ........................................... 1334
Component Inspection .........................................1338
Removal and Installation ......................................1339
EVAP CANISTER PURGE VOLUME CONTROL
SOLENOID VALVE ................................................. 1340
Description ...........................................................1340
CONSULT-II Reference Value in Data Monitor Mode
1340
ECM Terminals and Reference Value ..................1340
Wiring Diagram ....................................................1342
Diagnostic Procedure ........................................... 1343
Component Inspection .........................................1346
Removal and Installation ......................................1346
IVT CONTROL SOLENOID VALVE .......................1347
Description ...........................................................1347
CONSULT-II Reference Value in Data Monitor Mode
1347
ECM Terminals and Reference Value ..................1348
Wiring Diagram ....................................................1349
Diagnostic Procedure ........................................... 1350
Component Inspection .........................................1352
Removal and Installation ......................................1352
PNP SWITCH .........................................................1353
Component Description .......................................1353
CONSULT-II Reference Value in Data Monitor Mode
1353
ECM Terminals and Reference Value ..................1353
Wiring Diagram ....................................................1354
Diagnostic Procedure ........................................... 1355

EC-19
C
D
E
F
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M
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

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

EC-46
[QR25(WITH EURO-OBD)]
ON BOARD DIAGNOSTIC (OBD) SYSTEM
*1: 1st trip DTC No. is the same as DTC No.P0500 0500
VEH SPEED SEN/CIRC*
7——×EC-250
P0550 0550 PW ST P SEN/CIRC — —×EC-255
P0605 0605 ECM — —×EC-260
P0650 0650 MIL/CIRC — —×EC-263
P0705 0705 PNP SW/CIRC — —×AT- 11 0
P0710 0710 ATF TEMP SEN/CIRC — —×AT- 11 6
P0720 0720
VEH SPD SEN/CIR AT*7——×AT-122
P0731 0731 A/T 1ST GR FNCTN — —×AT-131
P0732 0732 A/T 2ND GR FNCTN — —×AT-137
P0733 0733 A/T 3RD GR FNCTN — —×AT-143
P0734 0734 A/T 4TH GR FNCTN — —×AT-149
P0740 0740 TCC SOLENOID/CIRC — —×AT-158
P0745 0745 L/PRESS SOL/CIRC — —×AT-163
P0750 0750 SFT SOL A/CIRC — — —AT- 1 7 0
P0755 0755 SFT SOL B/CIRC — — —AT- 1 7 5
P1065 1065 ECM BACK UP/CIRC — —×EC-267
P 1111 1111 I N T / V T I M V / C I R - B 1 — —×EC-271
P1121 1121 ETC ACTR — —×EC-276
P1122 1122 ETC FUNCTION/CIRC — —×EC-278
P1124 1124 ETC MOT PWR — — —EC-285
P1126 1126 ETC MOT PWR — — —EC-285
P1128 1128 ETC MOT — — —EC-290
P1143 1143 HO2S1 (B1) — —
×*4EC-295
P1144 1144 HO2S1 (B1) — —
×*4EC-301
P1146 1146 HO2S2 (B1) — —
×*4EC-307
P1147 1147 HO2S2 (B1) — —
×*4EC-315
P1217 1217 ENG OVER TEMP — — —EC-323
P1225 1225 CTP LEARNING — —×EC-337
P1226 1226 CTP LEARNING — —×EC-339
P1229 1229 SENSOR POWER/CIRC — — —EC-341
P1610 - P1615 1610 - 1615 NATS MALFUNCTION — —×EC-58
P1705 1705 TP SEN/CIRC A/T — — —AT- 1 8 0
P1706 1706 P-N POS SW/CIRCUIT — —×EC-345
P1760 1760 O/R CLTCH SOL/CIRC — —×AT-185
P1805 1805 BRAKE SW/CIRCUIT — —×EC-349
P2122 2122 APP SEN 1/CIRC — — —EC-355
P2123 2123 APP SEN 1/CIRC — — —EC-355
P2127 2127 APP SEN 2/CIRC — — —EC-361
P2128 2128 APP SEN 2/CIRC — — —EC-361
P2135 2135 TP SENSOR — — —EC-367
P2138 2138 APP SENSOR — — —EC-373
DTC*1
Items
(CONSULT-II screen terms)SRT codeTest value/
Te s t l i m i t
(GST only)1st trip
DTC*1Reference page
CONSULT-II
GST*
2ECM*3

TROUBLE DIAGNOSIS
EC-71
[QR25(WITH EURO-OBD)]
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EC
Fail-safe ChartEBS00M0U
The ECM enters fail-safe mode, if any of the following malfunctions is detected due to the open or short circuit.
When the ECM enters the fail-safe mode, the MI illuminates.
Priority Detected items (DTC)
1
●U1000 CAN communication line
●P0102 P0103 Mass air flow sensor
●P0112 P0113 P0127 Intake air temperature sensor
●P0117 P0118 Engine coolant temperature sensor
●P0122 P0123 P0222 P0223 P1225 P1226 P1229 P2135 Throttle position sensor
●P0327 P0328 Knock sensor
●P0335 Crankshaft position sensor (POS)
●P0340 Camshaft position sensor (PHASE)
●P0500 Vehicle speed sensor
●P0605 ECM
●P0705 Park/Neutral position (PNP) sensor
●P1706 Park/Neutral position (PNP) switch
●P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2
●P0031 P0032 Heated oxygen sensor 1 heater
●P0037 P0038 Heated oxygen sensor 2 heater
●P0132 P0133 P0134 P1143 P1144 Heated oxygen sensor 1
●P0138 P0139 P1146 P1147 Heated oxygen sensor 2
●P0444 P0445 EVAP canister purge volume control solenoid valve
●P0550 Power steering pressure sensor
●P0650 MI
●P0710-P0725, P0740-P0755, P1705 P1760 A/T related sensors and solenoid valves
●P1065 ECM power supply
●P 1111 I n ta k e v a l v e t i m i n g c o n t r o l s o l e n o i d v a l v e
●P1122 Electric throttle control function
●P1124 P1126 P1128 Electric throttle control actuator
●P1805 Brake switch
3
●P0011 Intake valve timing control
●P0171 P0172 Fuel injection system function
●P0300 - P0304 Misfire
●P0420 Three way catalyst function
●P0731-P0734 A/T function
●P1121 Electric throttle control actuator
●P1217 Engine over temperature (OVERHEAT)
DTC No. Detected items Engine operating condition in fail-safe mode
P0102
P0103Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.

EC-90
[QR25(WITH EURO-OBD)]
TROUBLE DIAGNOSIS
37 L/YCooling fan relay
(Low)[Engine is running]●Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]
●Cooling fan is operating0 - 1.0V
40 P Stop lamp switch[Engine is running]
●Brake pedal releasedApproximately 0V
[Engine is running]
●Brake pedal depressedBATTERY VOLTAGE
(11 - 14V)
41 B/Y Start signal[Ignition switch “ON”]Approximately 0V
[Ignition switch “START”]9 - 14V
42 B/R Ignition switch[Ignition switch “OFF”]0V
[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
43 G/OR PNP switch[Ignition switch “ON”]
●Gear position is “P” or “N”.Approximately 0V
[Ignition switch “ON”]
●Except the above gear positionA/T model
BATTERY VOLTAGE
(11 - 14V)
M/T model
Approximately 5V
50 LG Data link connector[Ignition switch “ON”]
●CONSULT-II is disconnected.Approximately 5V
52 R/WElectrical load signal
(Rear window defog-
ger signal)[Ignition switch “ON”]
●Rear window defogger switch is “ON”BATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
●Rear window defogger switch is “OFF”Approximately 0V
53 R/YElectrical load signal
(Headlamp signal)[Ignition switch “ON”]
●Lighting switch is “2ND” positionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
●Lighting switch is “OFF”Approximately 0V
55 LG/BHeater fan switch sig-
nal[Ignition switch “ON”]
●Heater fan control switch is “ON”Approximately 0V
[Ignition switch “ON”]
●Heater fan control switch is “OFF”Approximately 5V
58 B Sensors' ground[Engine is running]
●Warm-up condition
●Idle speedApproximately 0V
59
60
106
108B/W
B/W
B/Y
B/YECM ground[Engine is running]
●Idle speedEngine ground TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)

TROUBLE DIAGNOSIS
EC-99
[QR25(WITH EURO-OBD)]
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EC
HO2S2 MNTR (B1)
[RICH/LEAN]×
●Display of heated oxygen sensor 2 sig-
nal:
RICH ... means the amount of oxygen
after three way catalyst is relatively
small.
LEAN ... means the amount of oxygen
after three way catalyst is relatively
large.
●When the engine is stopped, a
certain value is indicated.
VHCL SPEED SE
[km/h] or [mph]××
●The vehicle speed computed from the
vehicle speed signal is displayed.
BATTERY VOLT
[V]××
●The power supply voltage of ECM is dis-
played.
ACCEL SEN 1 [V]××
●The accelerator pedal position sensor
signal voltage is displayed.
ACCEL SEN 2 [V]×
THRTL SEN 1 [V]××
●The throttle position sensor signal volt-
age is displayed.
THRTL SEN 2 [V]×
INT/A TEMP SE
[°C] or [°F]××
●The intake air temperature (determined
by the signal voltage of the intake air
temperature sensor) is indicated.
START SIGNAL
[ON/OFF]××
●Indicates [ON/OFF] condition from the
starter signal.●After starting the engine, [OFF] is
displayed regardless of the starter
signal.
CLSD THL POS
[ON/OFF]××
●Indicates idle position [ON/OFF] com-
puted by ECM according to the acceler-
ator pedal position sensor signal.
AIR COND SIG
[ON/OFF]××
●Indicates [ON/OFF] condition of the air
conditioner switch as determined by the
air conditioner signal.
P/N POSI SW
[ON/OFF]××
●Indicates [ON/OFF] condition from the
park/neutral position (PNP) switch sig-
nal.
PW/ST SIGNAL
[ON/OFF]××
●[ON/OFF] condition of the power steer-
ing system (determined by the signal
voltage of the power steering pressure
sensor signal) is indicated.
LOAD SIGNAL
[ON/OFF]××
●Indicates [ON/OFF] condition from the
electrical load signal.
ON ... Rear window defogger switch is
ON and/or lighting switch is in 2nd posi-
tion.
OFF ... Both rear window defogger
switch and lighting switch are OFF.
IGNITION SW
[ON/OFF]××
●Indicates [ON/OFF] condition from igni-
tion switch.
HEATER FAN SW
[ON/OFF]×
●Indicates [ON/OFF] condition from the
heater fan switch signal.
BRAKE SW
[ON/OFF]×
●Indicates [ON/OFF] condition from the
stop lamp switch signal.
INJ PULSE-B1
[msec]×
●Indicates the actual fuel injection pulse
width compensated by ECM according
to the input signals.●When the engine is stopped, a
certain computed value is indi-
cated. Monitored item
[Unit]ECM
INPUT
SIG-
NALSMAIN
SIG-
NALSCAN
DIAG
SUP-
PORT
MNTRDescription Remarks

TROUBLE DIAGNOSIS
EC-107
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
THRTL SEN1
THRTL SEN2*2
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
●Shift lever:
D (A/T model)
1st (M/T model)Accelerator pedal: Fully depressed Less than 4.75V
START SIGNAL
●Ignition switch: ON → START → ON OFF → ON → OFF
CLSD THL POS
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
AIR COND SIG
●Engine: After warming up, idle
the engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates.)ON
P/N POSI SW
●Ignition switch: ONShift lever:
P or N (A/T model)
Neutral (M/T model)ON
Shift lever: Except above OFF
PW/ST SIGNAL
●Engine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
LOAD SIGNAL
●Ignition switch: ONRear window defogger switch is ON
and/or lighting switch is in 2nd.ON
Rear window defogger switch is OFF
and lighting switch is OFF.OFF
IGNITION SW
●Ignition switch: ON → OFF → ON ON → OFF → ON
HEATER FAN SW
●Engine: After warming up, idle
the engineHeater fan is operating. ON
Heater fan is not operating OFF
BRAKE SW
●Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
INJ PULSE-B1
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdleMT: 12° - 16° BTDC
AT: 1 4° - 18° BTDC
2,000 rpm 25° - 45° BTDC
CAL/LD VALUE
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 10% - 35%
2,500 rpm 10% - 35%
MASS AIRFLOW
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 1.0 - 4.0 g·m/s
2,500 rpm 4.0 - 10.0 g·m/s
PURG VOL C/V
●Engine: After warming up
●Shift lever: N
●Air conditioner switch: OFF
●No-loadIdle 0%
2,000 rpm 20 - 30% MONITOR ITEM CONDITION SPECIFICATION