2003 NISSAN X-TRAIL engine

EC-1080
[YD (WITH EURO-OBD)]
DTC P0404 EGR VOLUME CONTROL VALVE

DTC P0404 EGR VOLUME CONTROL VALVEPFP:14710
DescriptionEBS011P6
SYSTEM DESCRIPTION
*: These signals are sent to the ECM through CAN communication line.
This system controls flow rate of EGR led from exhaust manifold to intake manifold. The opening of the EGR
by-pass passage in the EGR volume control valve changes to control the flow rate. A built-in step motor
moves the valve in steps corresponding to the ECM output pulses. The opening of the valve varies for opti-
mum engine control. The optimum value stored in the ECM is determined by considering various engine con-
ditions.
The EGR volume control valve remains close under the following conditions.

Engine stopped

Engine starting

Low engine coolant temperature

High engine speed

Accelerator pedal fully depressed
COMPONENT DESCRIPTION
EGR Volume Control Valve
The EGR volume control valve uses a step motor to control the flow
rate of EGR from exhaust manifold. This motor has four winding
phases. It operates according to the output pulse signal of the ECM.
Two windings are turned ON and OFF in sequence. Each time an
ON pulse is issued, the valve opens or closes, changing the flow
rate. When no change in the flow rate is needed, the ECM does not
issue the pulse signal. A certain voltage signal is issued so that the
valve remains at that particular opening.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor Engine speed
EGR volume con-
trolEGR volume control
valve Vehicle speed sensor* Vehicle speed
Engine coolant temperature sensor Engine coolant temperature
Ignition switch Start signal
Accelerator pedal position sensor Accelerator pedal position
Mass air flow sensor Amount of intake air
Air conditioner switch
* Air conditioner operation
SEF908Y
SEF411Y

DTC P0404 EGR VOLUME CONTROL VALVE
EC-1081
[YD (WITH EURO-OBD)]
C
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MA
EC

CONSULT-II Reference Value in Data Monitor ModeEBS011P7
Specification data are reference values.
ECM Terminals and Reference ValueEBS011P8
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.
On Board Diagnosis LogicEBS011U2
DTC Confirmation ProcedureEBS011U3
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 and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine.
3. Maintain the following conditions for at least 20 consecutive sec-
onds.
MONITOR ITEM CONDITION SPECIFICATION
EGR VOL CON/V

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadAfter 1 minute at idle More than 10 steps
Revving engine from idle to 3,600
rpm0 step
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
25
26
27
28GY
W/L
OR/B
GY/BEGR volume control valve[Engine is running]

Warm-up condition

Idle speed0.1 - 14V
(Voltage signals of each ECM ter-
minals differ according to the con-
trol position of EGR volume
control valve.)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0404Exhaust gas recirculation con-
trol circuit range/performanceAn improper voltage signal is sent to
ECM through EGR volume control
valve.

Harness or connectors
(The EGR volume control valve
circuit is open or shorted.)

EGR volume control valve stuck
closed
PBIB2156E

DTC P0563 BATTERY VOLTAGE
EC-1087
[YD (WITH EURO-OBD)]
C
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EC

DTC P0563 BATTERY VOLTAGEPFP:24410
On Board Diagnosis LogicEBS011BS
This self-diagnosis has the one trip detection logic.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS011BT
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 35 seconds.
4. If DTC is detected, go to EC-1087, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureEBS011BU
1. INSPECTION START
Are jumper cables connected for the jump starting?
Ye s o r N o
Ye s > > G O T O 3 .
No >> GO TO 2.
2. CHECK BATTERY AND ALTERNATOR
Check that the proper type of battery and alternator is installed.
Refer to , SC-3, "
BATTERY" and SC-12, "CHARGING SYSTEM" .
OK or NG
OK >> GO TO 5.
NG >> Replace with a proper one.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0563 Battery voltage highAn excessively high voltage from the battery is
sent to ECM.

Battery

Battery terminal

Alternator
SEF817Y

DTC P0605 ECM
EC-1089
[YD (WITH EURO-OBD)]
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EC

DTC P0605 ECMPFP:23710
DescriptionEBS011BV
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicEBS011BW
DTC Confirmation ProcedureEBS011BX
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. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1090, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MBIB0625E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605Engine control module
(ROM)ECM ROM is malfunctioning.

ECM
SEF817Y

DTC P0606 ECM
EC-1091
[YD (WITH EURO-OBD)]
C
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EC

DTC P0606 ECMPFP:23710
DescriptionEBS011BZ
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicEBS011C0
DTC Confirmation ProcedureEBS011C1
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. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1092, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
MBIB0625E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0606Engine control module
(Processor)ECM calculation function is malfunctioning.

ECM
SEF817Y

DTC P0628, P0629 FUEL PUMP
EC-1093
[YD (WITH EURO-OBD)]
C
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EC

DTC P0628, P0629 FUEL PUMPPFP:16700
DescriptionEBS011C3
To control the amount of the fuel inhalation of the fuel pump, a plunger is built into the fuel pump. When the
amount of the fuel inhalation of fuel increases, the fuel pump raises the fuel exhalation pressure. As a result,
the fuel injection pressure is raised. When the load of the engine increases, the ECM sends a signal to the fuel
pump to raise the injection pressure.
CONSULT-II Reference Value in Data Monitor ModeEBS011C4
Specification data are reference values.
ECM Terminals and Reference ValueEBS011C5
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.
MONITOR ITEM CONDITION SPECIFICATION
PUMP CURRENT

Engine: After warming up

Air conditioner switch: OFF

Shift lever: Neutral position

No-loadIdle 1,700 - 1,900 mA
2,000 rpm 1,600 - 1,800 mA
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
10 Y/L Fuel pump power supply[Engine is running]

Warm-up condition

Idle speed0 - 12.5V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0 - 12.5V
29 L Fuel pump[Engine is running]

Warm-up condition

Idle speed0.5 - 1.0V
[Engine is running]

Warm-up condition

Engine speed is 2,000 rpm0.5 - 1.0V
MBIB0885E
MBIB0886E
MBIB0887E
MBIB0888E

EC-1094
[YD (WITH EURO-OBD)]
DTC P0628, P0629 FUEL PUMP

: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS011C6
DTC Confirmation ProcedureEBS011C7
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. Start engine and warm it up to normal operating temperature.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Let engine idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-1096, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0628Fuel pump control circuit
low inputECM detects a control circuit for the fuel pump is
open or short to ground.

Harness or connectors
(The fuel pump circuit is open or
shorted.)

Fuel pump P0629Fuel pump control circuit
high outputECM detects a control circuit for the fuel pump is
short to power.
SEF817Y

EC-1098
[YD (WITH EURO-OBD)]
DTC P0642, P0643 SENSOR POWER SUPPLY

DTC P0642, P0643 SENSOR POWER SUPPLYPFP:18002
DescriptionEBS011CC
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensors detect the accelera-
tor pedal position and sends a signal to the ECM. The ECM uses the
signal to determine the amount of fuel to be injected.
CONSULT-II Reference Value in Data Monitor ModeEBS011CD
Specification data are reference values.
*: These signals are converted by ECM internally. Thus, these differ from ECM terminals voltage.
ECM Terminals and Reference ValueEBS011CE
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.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL POS SEN*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.2 - 0.7V
Accelerator pedal: Fully depressed 3.9 - 4.9V
ACCEL SEN 2*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.1 - 0.4V
Accelerator pedal: Fully depressed 1.9 - 2.4V
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
82 BAccelerator pedal position
sensor 1 power supply[Ignition switch ON]Approximately 5.3V
83 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 depressed4.2 - 5.2V
84 RAccelerator pedal position
sensor 1 ground[Ignition switch ON]Approximately 0.3V
85 —Sensor ground
(Accelerator pedal posi-
tion sensor shield circuit)[Ignition switch ON]Approximately 0.3V
90 LAccelerator pedal position
sensor 2 power supply[Ignition switch ON]Approximately 5.3V