2005 NISSAN X-TRAIL sensor

EC-1504
[YD (WITHOUT EURO-OBD)]
DTC P0234 TC SYSTEM

5. CHECK TURBOCHARGER BOOST CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR
OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 6 and turbocharger boost control solenoid valve termi-
nals 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6. CHECK TURBOCHARGE BOOST CONTROL SOLENOID VALVE
Refer to EC-1505, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace turbocharger boost control solenoid valve.
7. CHECK VACUUM PUMP
Refer to EM-163, "
VACUUM PUMP" .
OK or NG
OK >> GO TO 8.
NG >> Replace vacuum pump assembly.
8. CHECK TURBOCHARGER BOOST CONTROL ACTUATOR
1. Turn ignition switch OFF.
2. Install a vacuum pump to turbocharger boost control actuator.
3. Make sure that the turbocharger boost control actuator rod
moves smoothly when applying vacuum of -53.3kPa (-533mbar,
-400mmHg, -15.75inHg) and releasing it.
OK or NG
OK >> GO TO 9.
NG >> Replace turbocharger assembly.
9. CHECK TURBOCHARGER BOOST SENSOR
Refer to EC-1511, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace turbocharger boost sensor.
10. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
MBIB1022E

EC-1506
[YD (WITHOUT EURO-OBD)]
DTC P0237, P0238 TC BOOST SENSOR

DTC P0237, P0238 TC BOOST SENSORPFP:22365
Component DescriptionEBS0120U
The turbocharger boost sensor detects pressure in the exit side of
the charge air cooler. The sensor output voltage to the ECM
increases as pressure increases.
CONSULT-II Reference Value in Data Monitor ModeEBS0120V
Specification data are reference values.
On Board Diagnosis LogicEBS0120X
The MI will not light up for these self-diagnoses.
NOTE:

If DTC P0237 or P0238 is displayed with DTC P0652 or P0653, first perform trouble diagnosis for
DTC P0652 or P0653. Refer to EC-1579, "
DTC P0652, P0653 SENSOR POWER SUPPLY" .
DTC Confirmation ProcedureEBS0120Y
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.
MBIB0614E
MBIB0899E
MONITOR ITEM CONDITION SPECIFICATION
INT/M PRES SE [kPa]

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle Approx. 100 kPa
2,800 rpm Approx. 126 kPa
4,000 rpm Approx. 106 kPa
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0237
0237Turbocharger boost sensor
circuit low inputAn excessively low voltage from the sensor is
sent to ECM.

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

Turbocharger boost sensor P0238
0238Turbocharger boost sensor
circuit high inputAn excessively high voltage from the sensor is
sent to ECM.

DTC P0237, P0238 TC BOOST SENSOR
EC-1507
[YD (WITHOUT EURO-OBD)]
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EC

2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1509, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1502, "
Diagnostic Procedure" .
SEF817Y

EC-1508
[YD (WITHOUT EURO-OBD)]
DTC P0237, P0238 TC BOOST SENSOR

Wiring DiagramEBS0120Z
TBWA0589E

DTC P0237, P0238 TC BOOST SENSOR
EC-1509
[YD (WITHOUT EURO-OBD)]
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EC

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 damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureEBS01210
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1424, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
52 Y Turbocharger boost sensor[Engine is running]

Warm-up condition

Idle speed2.3 - 2.6V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm2.5 - 2.8V
64 WTurbocharger boost sensor
power supply[Ignition switch ON]Approximately 5.3V
71 BTurbocharger boost sensor
ground[Engine is running]

Warm-up condition

Idle speedApproximately 0.3V
PBIB2020E

EC-1510
[YD (WITHOUT EURO-OBD)]
DTC P0237, P0238 TC BOOST SENSOR

2. CHECK TURBOCHARGER BOOST SENSOR POWER SUPPLY CIRCUIT
1. Disconnect turbocharge boost sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between turbocharge boost sensor terminal 1
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 TURBOCHAGER BOOST SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between turbocharger boost sensor terminal 3 and ECM terminal 71.
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 TURBOCHAGER BOOST SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals 52 and turbocharger boost 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 connectors.
5. CHECK TURBOCHARGER BOOST SENSOR
Refer to EC-1511, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace turbocharger boost sensor.
PBIB1898E
Voltage: Approximately 5.3V
MBIB0072E
Continuity should exist.
Continuity should exist.

DTC P0237, P0238 TC BOOST SENSOR
EC-1511
[YD (WITHOUT EURO-OBD)]
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6. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01211
CHECK TURBOCHARGER BOOST SENSOR
1. Remove turbocharger boost sensor with its harness connected.
2. Turn ignition switch ON.
3. Use pump to apply pressure sensor as shown in the figure.
CAUTION:

Always calibrate the pressure pump gauge when using it.

Inspection should be done at room temperature [10-30°C (50-86°F)].
4. Check the output voltage between turbocharger boost sensor terminal 2 and ground.
Removal and InstallationEBS01212
TURBOCHARGER BOOST SENSOR
Refer to EM-144, "CHARGE AIR COOLER" .
Pressure (Relative to atmospheric pressure) Voltage V
0 kPa (0 mbar, 0 mmHg, 0 inHg) Approximately 2.3V
+40 kPa (400 mbar, 300mmHg, 11.81 inHg) Approximately 2.9V
MBIB0925E

EC-1512
[YD (WITHOUT EURO-OBD)]
DTC P0335 CKP SENSOR

DTC P0335 CKP SENSORPFP:23731
DescriptionEBS01213
The crankshaft position sensor monitors engine speed by means of
signals from the sensing plate (with 56 protrusions) installed to the
fly wheel. The datum signal output is detected 6° signal and sent to
the ECM. The sensor signal is used for fuel injection control and fuel
injection timing control.
CONSULT-II Reference Value in Data Monitor ModeEBS01214
Specification data are reference values.
On Board Diagnosis LogicEBS01216
NOTE:

If DTC P0335 is displayed with DTC P0652 or P0653, first perform trouble diagnosis for DTC P0652
or P0653. Refer to EC-1579, "
DTC P0652, P0653 SENSOR POWER SUPPLY" .
DTC Confirmation ProcedureEBS01217
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 and let it idle for at least 5 seconds.
If engine could not start, keep ignition switch at START position
for 5 seconds.
4. If DTC is detected, go to EC-1515, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine and let it idle for at least 5 seconds.
If engine could not start, keep ignition switch at START position for 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1515, "
Diagnostic Procedure" .
MBIB0619E
MONITOR ITEM CONDITION SPECIFICATION
CKPS-RPM (TDC)

Run engine and compare CONSULT-II value with the tachometer
indication.Almost the same speed as the
tachometer indication
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0335
0335Crankshaft position sen-
sor circuitCrankshaft position sensor signal is not detect
by the ECM when engine is running.

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

Crankshaft position sensor
SEF817Y