2003 NISSAN X-TRAIL turn signal

DTC P1233 - P1234 SUCTION CONTROL VALVE
EC-773
[YD]
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EC
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
On Board Diagnosis LogicEBS008XJ
DTC Confirmation ProcedureEBS008XK
WITH CONSULT-II
1. Turn ignition switch “ON” and wait at least 2 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and run it for at least 2 seconds at idle speed.
(If engine does not run, turn ignition switch to “START” for at
least 2 seconds.)
4. If DTC is detected, go toEC-775, "
Diagnostic Procedure".
E16 G/W Suction control valve 2 signal[Engine is running]
lWarm-up condition
lIdle speed0 - 12.5V
[Engine is running]
lWarm-up condition
lEngine speed is 2,000 rpm0 - 12.5V TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
PBIB0401E
PBIB0402E
DTC Malfunction is detected when .... Check Items (Possible cause)
P1233
lSuction control valve 1 and/or 2 dose not operate
normally.lHarness or connectors
(Fuel supply pump suction control valve circuit is
open or shorted.)
lSuction control valve 1
lSuction control valve 2 P1234
SEF817Y

DTC P1233 - P1234 SUCTION CONTROL VALVE
EC-775
[YD]
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EC
Diagnostic ProcedureEBS008XM
1.CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch "OFF".
2. Disconnect ECM harness connector and fuel supply pump har-
ness connectors.
3. Check continuity between ECM terminal E1 and fuel supply
pump terminals 1, 3.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2.CHECK SUCTION CONTROL VALVE GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch "OFF".
2. Check continuity between ECM terminal E8 and fuel supply pump terminal 2, ECM terminal E16 and fuel
supply pump terminal 4.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
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 SUCTION CONTROL VALVE
Refer toEC-776, "
Component Inspection".
OK or NG
OK >> GO TO 4.
NG >> Replace fuel supply pump.
4.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Continuity should exist.
PBIB0464E
Continuity should exist.

DTC P1305 FUEL LEAK
EC-781
[YD]
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EC
DTC P1305 FUEL LEAKPFP:17520
On Board Diagnosis LogicEBS004TX
DTC Confirmation ProcedureEBS004TY
WITH CONSULT-II
1. Turn ignition switch “ON” and wait at least 2 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and run it for at least 2 seconds at idle speed.
(If engine does not run, turn ignition switch to “START” for at
least 2 seconds.)
4. If DTC is detected, go toEC-781, "
Diagnostic Procedure".
Diagnostic ProcedureEBS004U0
1.INSPECTION START
1. Start engine.
2. Visually check the following for fuel leak.
–Fuel tube from fuel supply pump to common rail
–Common rail
–Fuel tube from common rail to fuel injector
3. Also check for improper connection or pinches.
OK or NG
OK >> GO TO 2.
NG >> Repair malfunctioning part.
2.CEHCK FUEL PRESSURE RELIEF VALVE
Refer toEC-665, "
Fuel Pressure Relief Valve".
OK or NG
OK >> GO TO 3.
NG >> Replace common rail.
3.CHECK INTERMITTENT INCIDENT
Refer toEC-699, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
OK or NG
OK >> Replace fuel supply pump.
NG >> Repair or replace.
Removal and InstallationEBS008ZA
COMMON RAIL
Refer toEM-135, "INJECTION TUBE AND FUEL INJECTOR".
DTC Malfunction is detected when .... Check Items (Possible cause)
P1305
lThe relation between the output signal to suction
control valve and input signal from common rail fuel
pressure sensor is not in normal range.lSuction control valve
lFuel tube
lCommon rail
lFuel pressure relief valve
SEF817Y

EC-784
[YD]
DTC P1510 ACCELERATOR PEDAL RELEASED POSITION SWITCH
On Board Diagnosis Logic
EBS0096Y
DTC Confirmation ProcedureEBS0096Z
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Depress and release fully accelerator pedal slowly.
4. If DTC is detected, go toEC-786, "
Diagnostic Procedure".
A26 LG/RAccelerator pedal position
sensor 2 ground[Ignition switch "ON"]Approximately 0V
A28 PU/RAccelerator pedal position
sensor 1 power supply[Ignition switch "ON"]Approximately 5V
B15 WAccelerator pedal position
sensor 1[Ignition switch "ON"]
lAccelerator pedal fully released0.8 - 1.3V
[Ignition switch "ON"]
lAccelerator pedal fully depressedMore than 3.5V
B16 GAccelerator pedal position
sensor 2[Ignition switch "ON"]
lAccelerator pedal fully released0.3 - 1.8V
[Ignition switch "ON"]
lAccelerator pedal fully depressedMore than 3.0V
B23 GY/LAccelerator pedal position
sensor 2 power supply[Ignition switch “ON”]Approximately 5V
D14 G/YAccelerator pedal
released position switch[Ignition switch “ON”]
lAccelerator pedal slightly depressedBATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
lAccelerator pedal fully releasedApproximately 0V TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1510
lThe relation between accelerator pedal position
sensor 1, 2 signals and accelerator pedal position
switch signal is not in the normal range during the
specified accelerator pedal positions.lHarness or connectors
(Accelerator pedal released position switch circuit is
open or shorted.)
lAccelerator pedal released position switch
SEF817Y

EC-788
[YD]
DTC P1606 ECM
DTC P1606 ECM
PFP:23710
DescriptionEBS008YY
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 LogicEBS008YZ
DTC Confirmation ProcedureEBS008Z0
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If DTC is detected, go toEC-788, "
Diagnostic Procedure".
Diagnostic ProcedureEBS008Z1
1.INSPECTION START
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4. PerformEC-788, "
DTC Confirmation Procedure", again.
5. Is DTC P1606 displayed again?
Ye s o r N o
Yes >>GOTO2.
No >>INSPECTION END
PBIB0378E
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1606
lECM calculation function is malfunctioning.lECM
SEF817Y

EC-790
[YD]
DTC P1621 ECM RELAY
DTC P1621 ECM RELAY
PFP:25230
ECM Terminals and Reference valveEBS009O8
On Board Diagnosis LogicEBS008Y3
DTC Confirmation ProcedureEBS008Y4
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch “OFF”, wait at least 20 seconds and then
turn “ON”.
4. If DTC is detected, go toEC-792, "
Diagnostic Procedure".
TER-
MINAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
A8
A9R
RPower supply for ECM[Ignition switch "ON"]BATTERY VOLTAGE
(11 - 14V)
D18
D19W/R
W/RIgnition switch[Ignition switch “ON”]BATTERY VOLTAGE
(11 - 14V)
D24
D26G
GECM relay (self-shutoff)[Ignition switch “ON”]
[Ignition switch “OFF”]
lFor a few seconds after turning ignition switch
"OFF"Approximately 0V
[Ignition switch “OFF”]
lA few seconds passed after turning ignition
switch "OFF"BATTERY VOLTAGE
(11 - 14V)
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1621
lAn irregular voltage signal from the ECM relay is
sent to ECM.lHarness or connectors (ECM relay circuit is open or
shorted.)
lECM relay
SEF817Y

EC-792
[YD]
DTC P1621 ECM RELAY
Diagnostic Procedure
EBS008Y5
1.CHECK ECM POWER SUPPLY CIRCUIT
1. Turn ignition switch "OFF".
2. Disconnect ECM relay.
3. Check voltage between ECM terminals 1, 6 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors E65, F6
l20A fuse
lHarness for open and short between ECM relay and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK ECM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch "OFF".
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals A8, A9 and ECM relay terminal 7. Refer to Wiring Dia-
gram.
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.
PBIB0377E
PBIB0359E
Continuity should exist.

EC-796
[YD]
GLOW CONTROL SYSTEM
GLOW CONTROL SYSTEM
PFP:25230
DescriptionEBS0035J
SYSTEM DESCRIPTION
When engine coolant temperature is more than approximately 80°C (176°F), the glow relay turns off.
When coolant temperature is lower than approximately 80°C (176°F):
lIgnition switch ON
After ignition switch has turned to ON, the glow relay turns ON for a certain period of time in relation to
engine coolant temperature, allowing current to flow through glow plug.
lCranking
The glow relay turns ON, allowing current to flow through glow plug.
lSta rting
After engine has started, current continues to flow through glow plug (after-glow mode) for a certain period
in relation to engine coolant temperature.
The glow indicator lamp turns ON for a certain period of time in relation to engine coolant temperature at the
time glow relay is turned ON.
COMPONENT DESCRIPTION
Glow Plug
The glow plug is provided with a ceramic heating element to obtain a
high-temperature resistance. It glows in response to a signal sent
from the ECM, allowing current to flow through the glow plug via the
glow relay.
ECM Terminals and Reference ValueEBS0035K
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.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (TDC) Engine speed
Glow controlGlow lamp
Glow relay
Glow plugs Engine coolant temperature sensor Engine coolant temperature
SEF376Y
TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
D2 OR Glow lamp[Ignition switch “ON”]
lGlow lamp is "ON"Approximately 1.0V
[Ignition switch “ON”]
lGlow lamp is "OFF"BATTERY VOLTAGE
(11 - 14V)
E9 W/R Glow relay Refer toEC-796, "
SYSTEM DESCRIPTION"