2001 NISSAN X-TRAIL brake sensor

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)]
C
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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)]
C
D
E
F
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MA
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

EC-432
[QR25(WITHOUT EURO-OBD)]
INDEX FOR DTC
[QR25(WITHOUT EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS00NC2
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-513
.
×: Applicable –: Not applicable
Items
(CONSULT-II screen terms)DTC*
1
TripMI lighting
upReference page
CONSULT-II
ECM*2
APP SENSOR P2138 2138 2×EC-651
APP SEN 1/CIRC P2122 2122 1×EC-631
APP SEN 1/CIRC P2123 2123 1×EC-631
APP SEN 2/CIRC P2127 2127 1×EC-637
APP SEN 2/CIRC P2128 2128 1×EC-637
BRAKE SW/CIRCUIT P1805 1805 2 –EC-625
CAN COMM CIRCUIT*5U1000
1000*41×EC-513
CKP SEN/CIRCUIT P0335 0335 2×EC-551
CMP SEN/CIRCUIT P0340 0340 2×EC-557
CTP LEARNING P1225 1225 2 —EC-617
CTP LEARNING P1226 1226 2 —EC-619
ECM P0605 0605 1 or 2× or –EC-573
ECM BACK UP/CIRC P1065 1065 2×EC-580
ECT SEN/CIRCUIT P0117 0117 1×EC-523
ECT SEN/CIRCUIT P0118 0118 1×EC-523
ENG OVER TEMP P1217 1217 1×EC-603
ETC ACTR P1121 1121 1 or 2×EC-584
ETC FUNCTION/CIRC P1122 1122 1×EC-586
ETC MOT P1128 1128 1×EC-598
ETC MOT PWR P1124 1124 1×EC-593
ETC MOT PWR P1126 1126 1×EC-593
HO2S1 (B1) P0134 0134 2×EC-534
HO2S2 (B1) P0138 0138 2×EC-185
HO2S2 (B1) P0139 0139 2×EC-192
MAF SEN/CIRCUIT P0102 0102 1×EC-516
MAF SEN/CIRCUIT P0103 0103 1×EC-516
MIL/CIRC P0650 0650 1 or 2× or –EC-576
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 –EC-58
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*3–
Flashing*3EC-59
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000––—
PW ST P SEN/CIRC P0550 0550 2 –EC-568
SENSOR POWER/CIRC P1229 1229 1×EC-621
TP SEN 2/CIRC P0122 0122 1×EC-528

EC-434
[QR25(WITHOUT EURO-OBD)]
INDEX FOR DTC
*1: 1st trip DTC No. is the same as DTC No.
*2: In Diagnostic Test Mode II (Self-diagnostic results), these numbers are controlled by NISSAN.
*3: When engine is running.
*4: The trouble shooting for this DTC needs CONSULT-II.
*5: For A/T models.
*6: When the fail-safe operations for both self-diagnoses occur at the same time, the MI illuminates. P1122 1122 ETC FUNCTION/CIRC 1×EC-586
P1124 1124 ETC MOT PWR 1×EC-593
P1126 1126 ETC MOT PWR 1×EC-593
P1128 1128 ETC MOT 1×EC-598
P1217 1217 ENG OVER TEMP 1×EC-603
P1225 1225 CTP LEARNING 2 –EC-617
P1226 1226 CTP LEARNING 2 –EC-619
P1229 1229 SENSOR POWER/CIRC 1×EC-621
P1610 - P1615 1610 - 1615 NATS MALFUNCTION 2 –EC-58
P1805 1805 BRAKE SW/CIRCUIT 2 –EC-625
P2122 2122 APP SEN 1/CIRC 1×EC-631
P2123 2123 APP SEN 1/CIRC 1×EC-631
P2127 2127 APP SEN 2/CIRC 1×EC-637
P2128 2128 APP SEN 2/CIRC 1×EC-637
P2135 2135 TP SENSOR 1×EC-644
P2138 2138 APP SENSOR 1×EC-651
DTC*1Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II
ECM*
2

EC-464
[QR25(WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
Fail-safe Chart
EBS00NEB
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
●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
●P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2
●P0134 Heated oxygen sensor 1
●P0550 Power steering pressure sensor
●P0650 MI
●P1122 Electric throttle control function
●P1124 P1126 P1128 Electric throttle control actuator
●P1805 Brake switch
3
●P1121 Electric throttle control actuator
●P1217 Engine over temperature (OVERHEAT)
DTC No. Detected items Engine operating condition in fail-safe mode
P0117
P0118Engine coolant tempera-
ture sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning
ignition switch “ON” or “START”.
CONSULT-II displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided (CONSULT-
II display)
Just as ignition switch is turned
ON or Start40°C (104°F)
More than approx. 4 minutes after
ignition ON or Start80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cool-
ing fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening
in order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the nor-
mal condition.
So, the acceleration will be poor.
P1121 Electric throttle control actu-
ator
(ECM detect the throttle
valve is stuck open.)While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops,
the engine stalls.
The engine can restart in “N” or “P” position, and engine speed will not exceed 1,000
rpm or more.
P1122 Electric throttle control func-
tionECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1124
P1126Throttle control relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1128 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.

EC-482
[QR25(WITHOUT 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)