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DTC P2135 APP SENSOR
EC-1439
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Wiring DiagramEBS0124T
TBWA0730E
Page 1818 of 4179
EC-1440
[YD (WITHOUT EURO-OBD)]
DTC P2135 APP SENSOR
Diagnostic ProcedureEBS0124U
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten engine ground screws. Refer to EC-1267, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E
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![NISSAN X-TRAIL 2003 Service Repair Manual DTC P2135 APP SENSOR
EC-1441
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Tu NISSAN X-TRAIL 2003 Service Repair Manual DTC P2135 APP SENSOR
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Tu](/manual-img/5/57404/w960_57404-1818.png)
DTC P2135 APP SENSOR
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminals 4, 6 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminals 3 and ECM terminal 84, APP sensor terminal 1
and ECM terminal 92.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 83 and APP sensor terminal 5, ECM terminal 91 and
APP sensor terminal 2.
Refer to Wiring Diagram.
2. 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 APP SENSOR
Refer to EC-1442, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace accelerator pedal assembly.
PBIB1893E
Voltage: Approximately 5.3V
PBIB0560E
Continuity should exist.
Continuity should exist.
Page 1820 of 4179
EC-1442
[YD (WITHOUT EURO-OBD)]
DTC P2135 APP SENSOR
6. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS0124V
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check voltage between ECM terminals 83 (APP sensor 1 sig-
nal), 91 (APP sensor 2 signal) and body ground under the fol-
lowing conditions.
4. If NG, replace accelerator pedal assembly.
Removal and InstallationEBS0124W
ACCELERATOR PEDAL
Refer to ACC-2, "ACCELERATOR CONTROL SYSTEM" .
Terminal Accelerator pedal Voltage
83
(Accelerator pedal position
sensor 1)Fully released 0.5 - 1.0V
Fully depressed 4.2 - 5.2V
91
(Accelerator pedal position
sensor 2)Fully released 0.4 - 0.7V
Fully depressed 2.2 - 2.7V
MBIB0615E
Page 1821 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
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DTC P2146, P2149 FUEL INJECTOR POWER SUPPLYPFP:16600
Component DescriptionEBS0124X
The fuel inje NISSAN X-TRAIL 2003 Service Repair Manual DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
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DTC P2146, P2149 FUEL INJECTOR POWER SUPPLYPFP:16600
Component DescriptionEBS0124X
The fuel inje](/manual-img/5/57404/w960_57404-1820.png)
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
EC-1443
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DTC P2146, P2149 FUEL INJECTOR POWER SUPPLYPFP:16600
Component DescriptionEBS0124X
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the needle valve back and
allows fuel to flow through the fuel injector into the cylinder. The
amount of fuel injected depends upon the injection pulse duration.
Pulse duration is the length of time the fuel injector remains open.
The ECM controls the injection pulse duration based on engine fuel
needs.
CONSULT-II Reference Value in Data Monitor ModeEBS0124Y
Specification data are reference values.
ECM Terminals and Reference ValueEBS0124Z
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.
PBIB0465E
MONITOR ITEM CONDITION SPECIFICATION
MAIN INJ WID
Engine: After warming up
Shift lever: Neutral position
Idle speedNo-load 0.68 - 0.78 msec
Blower fan switch: ON
Rear window defogger switch: ON0.78 - 0.88 msec
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
4
5W/B
G/BFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]
Warm-up condition
Idle speed5 - 10V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm5 - 10V
MBIB0883E
MBIB0884E
Page 1822 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EC-1444
[YD (WITHOUT EURO-OBD)]
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS0125 NISSAN X-TRAIL 2003 Service Repair Manual EC-1444
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DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS0125](/manual-img/5/57404/w960_57404-1821.png)
EC-1444
[YD (WITHOUT EURO-OBD)]
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS01250
21
22
23
24G/R
GY/L
G/R
GY/LFuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3[Engine is running]
Warm-up condition
Idle speed0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
40
41
42
43G/R
GY/L
G/R
GY/LFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]
Warm-up condition
Idle speed0 - 9V
G/R
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
MBIB0881E
MBIB0882E
MBIB0882E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2146No. 1 and 4 cylinder fuel
injector power supply cir-
cuit openAn improper voltage signal is sent to ECM
through No. 1 and 4 cylinder fuel injector.
Harness or connectors
(The fuel injector circuit is open.)
P2149No. 2 and 3 cylinder fuel
injector power supply cir-
cuit openAn improper voltage signal is sent to ECM
through No. 2 and 3 cylinder fuel injector.
Page 1823 of 4179
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
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DTC Confirmation ProcedureEBS01251
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 the ambient temperature is more than -20°C (-4°F).
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1447, "
Diagnostic Proce-
dure" .
SEF817Y
Page 1824 of 4179
EC-1446
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DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
Wiring DiagramEBS01252
TBWA0733E