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![NISSAN X-TRAIL 2005 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-405
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS010U2
Brake switch signal is applied to the ECM through the stop lamp switc NISSAN X-TRAIL 2005 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-405
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS010U2
Brake switch signal is applied to the ECM through the stop lamp switc](/manual-img/5/57403/w960_57403-808.png)
DTC P1805 BRAKE SWITCH
EC-405
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DTC P1805 BRAKE SWITCHPFP:25320
DescriptionEBS010U2
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 ModeEBS010U3
Specification data are reference values.
On Board Diagnosis LogicEBS010U4
The MI will not light up for this self-diagnosis.
FAIL-SAFE MODEEBS010U5
When the malfunction is detected, the ECM enters in fail-safe mode.
DTC Confirmation ProcedureEBS010U6
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 1st trip DTC is detected, go to EC-407, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
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
extremely long time while the vehicle is driv-
ing.
Harness or connectors
(Stop lamp switch circuit is open or shorted.)
Stop lamp switch
Engine operation condition in fail-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
Page 810 of 4555
EC-406
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
Wiring DiagramEBS010U7
TBWA0623E
Page 811 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-407
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground NISSAN X-TRAIL 2005 Service Repair Manual DTC P1805 BRAKE SWITCH
EC-407
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground](/manual-img/5/57403/w960_57403-810.png)
DTC P1805 BRAKE SWITCH
EC-407
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS010U8
1. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Check the stop lamp when depressing and releasing the brake pedal.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch harness connector.
2. Check voltage between stop lamp switch terminal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
101 P Stop lamp switch[Ignition switch: OFF]
Brake pedal: Fully releasedApproximately 0V
[Ignition switch: OFF]
Brake pedal: Slightly depressedBATTERY VOLTAGE
(11 - 14V)
Brake pedal Stop lamp
Fully released Not illuminated
Slightly depressed Illuminated
PBIB0498E
Voltage: Battery voltage
PBIB2284E
Page 812 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-408
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch an NISSAN X-TRAIL 2005 Service Repair Manual EC-408
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DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch an](/manual-img/5/57403/w960_57403-811.png)
EC-408
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between stop lamp switch terminal 2 and ECM terminal 101.
Refer to Wiring Diagram.
3. 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-408, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace stop lamp switch.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-124, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01FF8
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to BR-6, "
BRAKE PEDAL" , and perform step 3 again. Continuity should exist.
Condition Continuity
Brake pedal: Fully released. Should not exist.
Brake pedal: Slightly depressed. Should exist.
PBIB2285E
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![NISSAN X-TRAIL 2005 Service Repair Manual DTC P2122, P2123 APP SENSOR
EC-409
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DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionEBS010UA
The accelerator pedal position sensor is installe NISSAN X-TRAIL 2005 Service Repair Manual DTC P2122, P2123 APP SENSOR
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DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionEBS010UA
The accelerator pedal position sensor is installe](/manual-img/5/57403/w960_57403-812.png)
DTC P2122, P2123 APP SENSOR
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DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionEBS010UA
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor ModeEBS010UB
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage.
On Board Diagnosis LogicEBS010UC
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229.
Refer to EC-372, "
DTC P1229 SENSOR POWER SUPPLY" .
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1
Ignition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.5 - 1.0V
Accelerator pedal: Fully depressed 4.0 - 4.7V
ACCEL SEN 2*
Ignition switch: ON
(engine stopped)Accelerator pedal: Fully released 0.3 - 1.2V
Accelerator pedal: Fully depressed 3.9 - 4.8V
CLSD THL POS
Ignition switch: ONAccelerator pedal: Fully released ON
Accelerator pedal: Slightly depressed OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2122
2122Accelerator pedal position
sensor 1 circuit low inputAn excessively low voltage from the APP sensor 1
is sent to ECM.
Harness or connectors
(The APP sensor 1 circuit is open or
shorted.)
Accelerator pedal position sensor
(APPsensor 1) P2123
2123Accelerator pedal position
sensor 1 circuit high inputAn excessively high voltage from the APP sensor 1
is sent to ECM.
Engine operating condition in fail-safe mode
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.
Page 814 of 4555
EC-410
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DTC P2122, P2123 APP SENSOR
DTC Confirmation ProcedureEBS010UD
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-413, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
Page 815 of 4555
DTC P2122, P2123 APP SENSOR
EC-411
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Wiring DiagramEBS010UE
TBWA0624E
Page 816 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-412
[QR (WITH EURO-OBD)]
DTC P2122, P2123 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measu NISSAN X-TRAIL 2005 Service Repair Manual EC-412
[QR (WITH EURO-OBD)]
DTC P2122, P2123 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measu](/manual-img/5/57403/w960_57403-815.png)
EC-412
[QR (WITH EURO-OBD)]
DTC P2122, P2123 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
82 R/YSensor ground
(Accelerator pedal position
sensor 1)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
83 LSensor ground
(Accelerator pedal position
sensor 2)[Engine is running]
Warm-up condition
Idle speedApproximately 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
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
106 WAccelerator pedal position
sensor 1[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully released0.5 - 1.0V
[Ignition switch: ON]
Engine stopped
Accelerator pedal: Fully depressed3.9 - 4.7V