brake light NISSAN X-TRAIL 2003 Service User Guide

EC-384
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH

4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect stop lamp switch harness connector.
2. Disconnect ECM harness connector.
3. Check harness continuity between stop lamp switch terminal 2 and ECM terminal 101.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK STOP LAMP SWITCH
Refer to EC-384, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace stop lamp switch.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-123, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS010U9
STOP LAMP SWITCH
A/T Models
1. Disconnect stop lamp switch harness connector.
2. Check continuity between stop lamp switch terminals 1 and 2
under the following conditions.
If NG, adjust brake pedal installation, refer to BR-6, "
BRAKE
PEDAL" , and perform step 2 again. Continuity should exist.
PBIB0498E
Conditions Continuity
Brake pedal: Fully released Should not exist.
Brake pedal: Slightly depressed Should exist.
PBIB1185E

DTC P1805 BRAKE SWITCH
EC-385
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M/T Models
1. Disconnect stop lamp switch harness connector.
2. Check continuity between stop lamp switch terminals 1 and 2
under the following conditions.
If NG, adjust brake pedal installation, refer to BR-6, "
BRAKE
PEDAL" , and perform step 2 again.
PBIB0498E
Conditions Continuity
Brake pedal: Fully released Should not exist.
Brake pedal: Slightly depressed Should exist.
PBIB0118E

EC-482
[QR (WITHOUT EURO-OBD)]
INDEX FOR DTC

[QR (WITHOUT EURO-OBD)]INDEX FOR DTCPFP:00024
Alphabetical IndexEBS010WE
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-44, "
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-579, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
Items
(CONSULT-II screen terms)DTC*1
TripMI lighting
upReference page
CONSULT-II*2ECM*3
APP SEN 1/CIRC P2122 2122 1×EC-740
APP SEN 1/CIRC P2123 2123 1×EC-740
APP SEN 2/CIRC P2127 2127 1×EC-747
APP SEN 2/CIRC P2128 2128 1×EC-747
APP SENSOR P2138 2138 1×EC-763
BRAKE SW/CIRCUIT P1805 1805 1×EC-733
CAN COMM CIRCUIT U1000
1000*52—EC-579
CAN COMM CIRCUIT U1001
1001*52—EC-579
CKP SEN/CIRCUIT P0335 0335 2×EC-638
CMP SEN/CIRC-B1 P0340 0340 2×EC-646
CTP LEARNING P1225 1225 2 —EC-716
CTP LEARNING P1226 1226 2 —EC-718
ECM P0605 0605 1 or 2× or —EC-661
ECM BACK UP/CIRC P1065 1065 2×EC-664
ECT SEN/CIRCUIT P0117 0117 2×EC-597
ECT SEN/CIRCUIT P0118 0118 2×EC-597
ENG OVER TEMP P1217 1217 1×EC-700
ETC ACTR P1121 1121 1×EC-668
ETC FUNCTION/CIRC P1122 1122 1×EC-671
ETC MOT P1128 1128 1×EC-690
ETC MOT PWR P1124 1124 1×EC-682
ETC MOT PWR P1126 1126 1×EC-682
HO2S1 (B1) P0132 0132 2
×*8 or —*7EC-611
HO2S1 (B1) P0134 0134 2×EC-618
INT/V TIM CONT-B1 P0011 0011 2×EC-582
KNOCK SEN/CIRC-B1 P0327 0327 2 —EC-633
KNOCK SEN/CIRC-B1 P0328 0328 2 —EC-633
MAF SEN/CIRCUIT P0102 0102 1×EC-590
MAF SEN/CIRCUIT P0103 0103 1×EC-590
NATS MALFUNCTION P1610 - P1615 1610 - 1615 2 —EC-515
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.No DTC
Flashing*4—
Flashing*4EC-517
NO DTC IS DETECTED.
FURTHER TESTING
MAY BE REQUIRED.P0000 0000———
PW ST P SEN/CIRC P0550 0550 2 —EC-656

INDEX FOR DTC
EC-485
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*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: Except QR20DE with A/T models.
*8: For QR20DE with A/T models.P1720 1720 V/SP SEN (A/T OUT) 2 —EC-730
P1805 1805 BRAKE SW/CIRCUIT 1×EC-733
P2122 2122 APP SEN 1/CIRC 1×EC-740
P2123 2123 APP SEN 1/CIRC 1×EC-740
P2127 2127 APP SEN 2/CIRC 1×EC-747
P2128 2128 APP SEN 2/CIRC 1×EC-747
P2135 2135 TP SENSOR 1×EC-755
P2138 2138 APP SENSOR 1×EC-763
DTC*1Items
(CONSULT-II screen terms)TripMI lighting
upReference page
CONSULT-II*
2ECM*3

EC-524
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS

Fail-safe ChartEBS010X6
When the DTC listed bellow is detected, the ECM enters fail-safe mode and the MI lights up.
Priority Detected items (DTC)
1

U1000 U1001 CAN communication line

P0102 P0103 Mass air flow sensor

P0117 P0118 Engine coolant temperature sensor

P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor

P0327 P0328 Knock sensor

P0335 Crankshaft position sensor (POS)

P0340 Camshaft position sensor (PHASE)

P0500 Vehicle speed sensor

P0605 ECM

P1229 Sensor power supply

P1610-P1615 NATS

P1706 Park/Neutral position (PNP) switch

P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
2

P0132 P0134 Heated oxygen sensor 1

P0550 Power steering pressure sensor

P1065 ECM power supply

P1122 Electric throttle control function

P1124 P1126 Throttle control motor relay

P1128 Throttle control motor

P1211 TCS control unit

P1212 TCS communication line

P1720 Vehicle speed sensor

P1805 Brake switch
3

P0011 Intake valve timing control

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.
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 START 40°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 cooling
fan operates while engine is running.
P0122
P0123
P0221
P0222
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 normal
condition.
So, the acceleration will be poor.

TROUBLE DIAGNOSIS
EC-549
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84 L/YElectrical load signal
(Headlamp signal)[Ignition switch: ON]
Lighting switch: 2ND positionBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Lighting switch: OFFApproximately 0V
85 LG DATA link connector[Ignition switch: ON]

CONSULT-II is disconnectedBATTERY VOLTAGE
(11 - 14V)
86 GY/R CAN communication line[Ignition switch: ON]1.0 - 2.5V
89 G Cooling fan relay (High)[Engine is running]

Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Engine is running]

Cooling fan is high speed operating0 - 1.0V
90 RSensor power supply
(Accelerator pedal position
sensor 1)[Ignition switch: ON]Approximately 5V
91 BR/YSensor power supply
(Accelerator pedal position
sensor 2)[Ignition switch: ON]Approximately 5V
93 BRElectrical load signal
(Rear window defogger sig-
nal)[Ignition switch: ON]

Rear window defogger switch: ONBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Rear window defogger switch: OFFApproximately 0V
94 G/R CAN communication line[Ignition switch: ON]2.5 - 4.0V
96 LG/B Heater fan switch[Engine is running]

Heater fan switch: ONApproximately 0V
[Engine is running]

Heater fan switch: OFFBATTERY VOLTAGE
(11 - 14V)
97 PU Cooling fan relay (Low)[Ignition switch: ON]

Cooling fan is not operatingBATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]

Cooling fan is operating0 - 1.0V
98 B/WAccelerator pedal position
sensor 2[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully released0.15 - 0.6V
[Ignition switch: ON]

Engine stopped

Accelerator pedal: Fully depressed1.95 - 2.4V
101 P Stop lamp switch[Ignition switch: OFF]

Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]

Brake pedal: Slightly fully depressedBATTERY VOLTAGE
(11 - 14V)
102 G/OR PNP switch[Ignition switch: ON]

Shift lever: P or N (A/T), Neutral (M/T)Approximately 0V
[Ignition switch: ON]

Except above positionA/T models
BATTERY VOLTAGE
(11 - 14V)
M/T models
Approximately 5V TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)

EC-556
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS

START SIGNAL
[ON/OFF]××
Indicates start signal status [ON/OFF] com-
puted by the ECM according to the signals of
engine speed and battery voltage.
After starting the engine, [OFF] is
displayed regardless of the starter
signal.
CLSD THL POS
[ON/OFF]××

Indicates idle position [ON/OFF] computed by
ECM according to the accelerator pedal posi-
tion sensor signal.
AIR COND SIG
[ON/OFF]××

Indicates [ON/OFF] condition of the air condi-
tioner switch as determined by the air condi-
tioner signal.
P/N POSI SW
[ON/OFF]××

Indicates [ON/OFF] condition from the park/
neutral position (PNP) switch signal.
PW/ST SIGNAL
[ON/OFF]××

[ON/OFF] condition of the power steering pres-
sure sensor as determined by the power steer-
ing 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 position.
OFF: Both rear window defogger switch and
lighting switch are OFF.
IGNITION SW
[ON/OFF]×

Indicates [ON/OFF] condition from ignition
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.
IGN TIMING
[BTDC]×

Indicates the ignition timing computed by ECM
according to the input signals.
When the engine is stopped, a
certain value is indicated.
PURG VOL C/V
[%]

Indicates the EVAP canister purge volume con-
trol solenoid valve control value computed by
the ECM according to the input signals.

The opening becomes larger as the value
increases.
INT/V TIM (B1)
[°CA]

Indicates [°CA] of intake camshaft advanced
angle.
INT/V SOL (B1) [%]

The control value of the intake valve timing con-
trol solenoid valve (determined by ECM accord-
ing to the input signal) is indicated.

The advance angle becomes larger as the
value increases
VIAS S/V
[ON/OFF]

The control condition of the VIAS control sole-
noid valve (determined by ECM according to
the input signals) is indicated.
ON: VIAS control solenoid valve is operating.
OFF: VIAS control solenoid valve is not operat-
ing.
AIR COND RLY
[ON/OFF]×

The air conditioner relay control condition
(determined by ECM according to the input sig-
nals) is indicated. Monitored item
[Unit]ECM
INPUT
SIGNALSMAIN
SIG-
NALSDescription Remarks

EC-562
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS

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

Ignition switch: ONHeater 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

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

No loadIdle 2.0 - 3.0 msec
2,000 rpm 1.9 - 2.9 msec
IGN TIMING

Engine: After warming up

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

No loadIdle 13° - 17° BTDC
2,000 rpm 25° - 45° BTDC
PURG VOL C/V

Engine: After warming up

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

No loadIdle 0%
2,000 rpm 20 - 30%
INT/V TIM (B1)

Engine: After warming up

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

No loadIdle−5° - 5°CA
2,000 rpm Approx. 0° - 20°CA
INT/V SOL (B1)

Engine: After warming up

Air conditioner switch: OFF

Shift lever: N (A/T), Neutral (M/T)

No loadIdle 0% - 2%
2,000 rpm Approx. 0% - 50%
VIAS S/V

Engine: After warming upIdle OFF
More than 5,000 rpm ON
AIR COND RLY

Engine: After warming up, idle the
engineAir conditioner switch: OFF OFF
Air conditioner switch: ON
(Compressor operates)ON
FUEL PUMP RLY

For 1 seconds after turning ignition switch ON

Engine running or crankingON

Except above conditions OFF
THRTL RELAY

Ignition switch: ON ON
COOLING FAN

Engine: After warming up, idle the
engine

Air conditioner switch: OFFEngine coolant temperature is 94°C
(201°F) or lessOFF
Engine coolant temperature is
between 95°C (203°F) and 99°C
(210°F)LOW
Engine coolant temperature is
100°C (212°F) or moreHIGH
HO2S1 HTR (B1)

Engine: After warming up

Engine speed: Below 3,600 rpmON

Engine speed: Above 3,600 rpm OFF MONITOR ITEM CONDITION SPECIFICATION

EC-730
[QR (WITHOUT EURO-OBD)]
DTC P1720 VSS

DTC P1720 VSSPFP:31036
DescriptionEBS018OH
NOTE:
If DTC P1720 is displayed with DTC U1000, first perform the trouble diagnosis for DTC U1000. Refer to
EC-579, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from ESP/TCS/ABS
control unit (models with ESP) or “ABS actuator and electric unit (control unit)”(models without ESP), and the
other is from TCM (Transmission control module). ECM uses these two signals for engine control.
CONSULT-II Reference Value in Data Monitor ModeEBS018OI
Specification data are reference values.
On Board Diagnosis LogicEBS018OJ
The MI will not light up for this diagnosis.
DTC Confirmation ProcedureEBS018OK
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine.
4. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depress-
ing.
5. If 1st trip DTC is detected, go to EC-732, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle at a speed of 20 km/h (12 MPH) or more for at least 5 seconds without brake pedal depress-
ing.
3. Stop the vehicle.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
MONITOR ITEM CONDITION SPECIFICATION
VEH SPEED SE

Turn drive wheels and compare the CONSULT-II value with speedometer
indicationAlmost the same speed as the
speedometer indication
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1720
1720Vehicle speed sensor
(A/T output)ECM detects a difference between two
vehicle speed sensor signals is out of the
specified range.

Harness or connectors
(The CAN communication line is open or
shorted)

Harness or connectors
(Revolution sensor circuit is open or shorted)

Harness or connectors
(Wheel sensor circuit is open or shorted.)

TCM

ESP/TCS/ABS control unit (models with ESP)

“ABS actuator and electric unit (control unit)”
(models without ESP)

Combination meter

Wheel sensor

Revolution sensor

DTC P1805 BRAKE SWITCH
EC-733
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS01121
Brake switch signal is applied to the ECM through the stop lamp switch when the brake pedal is depressed.
This signal is used mainly to decrease the engine speed when the vehicle is driving.
CONSULT-II Reference Value in Data Monitor ModeEBS01122
Specification data are reference values.
On Board Diagnosis LogicEBS01123
This self-diagnosis has the one trip detection logic.
FALI-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation ProcedureEBS01124
WITH CONSULT-II
1. Turn ignition switch ON.
2. Fully depress the brake pedal for at least 5 seconds.
3. Erase the DTC with CONSULT-II.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. If DTC is detected, go to EC-736, "
Diagnostic Procedure" .
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW

Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805
1805Brake switchA brake switch signal is not sent to ECM for
an extremely long time while the vehicle is
driving.

Harness or connectors
(Stop lamp switch circuit is open or shorted.)

Stop lamp switch
Engine operating condition in fail-safe mode
ECM controls the electric throttle control actuator by regulating the throttle opening to a small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
PBIB1952E