2003 NISSAN X-TRAIL Service Repair Manual

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Page 1033 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0500 VSS
EC-655
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Overall Function CheckEBS010ZZ
Use this procedure to check the overall function of the vehicle speed signal circuit. During thi

Page 1034 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-656
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DTC P0550 PSP SENSOR

DTC P0550 PSP SENSORPFP:49763
Component DescriptionEBS01101
Power steering pressure (PSP) sensor is installed to the power
steering high-pressure

EC-656
[QR (WITHOUT EURO-OBD)]
DTC P0550 PSP SENSOR

DTC P0550 PSP SENSORPFP:49763
Component DescriptionEBS01101
Power steering pressure (PSP) sensor is installed to the power
steering high-pressure tube and detects a power steering load. This
sensor is a potentiometer which transforms the power steering load
into output voltage, and emits the voltage signal to the ECM. The
ECM controls the electric throttle control actuator and adjusts the
throttle valve opening angle to increase the engine speed and
adjusts the idle speed for the increased load.
CONSULT-II Reference Value in Data Monitor ModeEBS01102
Specification data are reference values.
On Board Diagnosis LogicEBS01103
The MI will not light up for this self-diagnosis.
NOTE:
If DTC P0550 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to
EC-656
.
DTC Confirmation ProcedureEBS01104
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.
4. If 1st trip DTC is detected, go to EC-658, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Start engine and let it idle for 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 1st trip DTC is detected, go to EC-658, "
Diagnostic Procedure" .
PBIB0502E
MONITOR ITEM CONDITION SPECIFICATION
PW/ST SIGNAL
Engine: After warming up, idle
the engineSteering wheel is in neutral position.
(Forward direction)OFF
Steering wheel is turned. ON
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0550
0550Power steering pressure
sensor circuitAn excessively low or high voltage from the
sensor is sent to ECM.
Harness or connectors
(The sensor circuit is open or shorted.)
Power steering pressure sensor
SEF058Y

Page 1035 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0550 PSP SENSOR
EC-657
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Wiring DiagramEBS01105
TBWA0610E

Page 1036 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-658
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DTC P0550 PSP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring

Page 1037 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0550 PSP SENSOR
EC-659
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2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect PSP sensor harness connector.
2. Turn ignition switch ON.
3. Chec

Page 1038 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-660
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DTC P0550 PSP SENSOR

6. CHECK INTERMITTENT INCIDENT
Refer to EC-570, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01107
POW

Page 1039 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0605 ECM
EC-661
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DTC P0605 ECMPFP:23710
Component DescriptionEBS01108
The ECM consists of a microcomputer and connectors for signal
input and ou

Page 1040 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-662
[QR (WITHOUT EURO-OBD)]
DTC P0605 ECM

4. If 1st trip DTC is detected, go to EC-663, "Diagnostic Procedure" .
PROCEDURE FOR MALFUNCTION B
With CONSULT-II
1. Turn ignition switch ON and wait a

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