2001 NISSAN X-TRAIL turn signal

DTC P1305 FUEL LEAK
EC-1529
[YD]
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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 to EC-1529, "
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.CHECK FUEL PRESSURE RELIEF VALVE
Refer to EC-1405, "
Fuel Pressure Relief Valve" .
OK or NG
OK >> GO TO 3.
NG >> Replace common rail.
3.CHECK INTERMITTENT INCIDENT
Refer to EC-1441, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> Replace fuel supply pump.
NG >> Repair or replace.
Removal and InstallationEBS008ZA
COMMON RAIL
Refer to EM-144, "INJECTION TUBE AND FUEL INJECTOR" .
DTC Malfunction is detected when .... Check Items (Possible cause)
P1305
●The relation between the output signal to suction
control valve and input signal from common rail fuel
pressure sensor is not in normal range.●Suction control valve
●Fuel tube
●Common rail
●Fuel pressure relief valve
SEF817Y

EC-1532
[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 to EC-1534, "
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”]
●Engine stopped
●Accelerator pedal fully released0.8 - 1.3V
[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully depressedMore than 3.5V
B16 GAccelerator pedal position
sensor 2[Ignition switch “ON”]
●Engine stopped
●Accelerator pedal fully released0.3 - 1.8V
[Ignition switch “ON”]
●Engine stopped
●Accelerator 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”]
●Engine stopped
●Accelerator pedal slightly depressedBATTERY VOLTAGE
(11 - 14V)
[Ignition switch “ON”]
●Engine stopped
●Accelerator 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
●The 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.●Harness or connectors
(Accelerator pedal released position switch circuit is
open or shorted.)
●Accelerator pedal released position switch
SEF817Y

EC-1536
[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 to EC-1536, "
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. Perform EC-1536, "
DTC Confirmation Procedure" , again.
5. Is DTC P1606 displayed again?
Ye s o r N o
Yes >> GO TO 2.
No >>INSPECTION END
PBIB0378E
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1606
●ECM calculation function is malfunctioning.●ECM
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EC-1538
[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 to EC-1540, "
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”]
●For a few seconds after turning ignition switch
“OFF”Approximately 0V
[Ignition switch “OFF”]
●A few seconds passed after turning ignition
switch “OFF”BATTERY VOLTAGE
(11 - 14V)
DTC Malfunction is detected when ... Check Items (Possible Cause)
P1621
●An irregular voltage signal from the ECM relay is
sent to ECM.●Harness or connectors (ECM relay circuit is open or
shorted.)
●ECM relay
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EC-1540
[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 relay 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.
●Harness connectors E65, F6
●20A fuse
●Harness 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
Voltage: Battery voltage
PBIB0359E
Continuity should exist.

EC-1544
[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):
●Ignition 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.
●Cranking
The glow relay turns ON, allowing current to flow through glow plug.
●Starting
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
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TERMI-
NAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
D2 OR Glow lamp[Ignition switch “ON”]
●Glow lamp is “ON”Approximately 1.0V
[Ignition switch “ON”]
●Glow lamp is “OFF”BATTERY VOLTAGE
(11 - 14V)
E9 W/R Glow relay Refer to EC-1544, "
SYSTEM DESCRIPTION"

EC-1548
[YD]
GLOW CONTROL SYSTEM
7. CHECK GLOW INDICATOR LAMP OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal D2 and combination meter terminal 65 (LHD models) or
55 (RHD models). Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
8. DETECT MALFUNCTIONING PART
Check the following.
●Harness connectors M63, F30
●Harness for open or short between combination meter and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK COMBINATION METER
Check combination meter and glow indicator lamp. Refer to DI-4, "
COMBINATION METERS (LHD MODELS)"
or DI-24, "COMBINATION METERS (RHD MODELS)" and DI-43, "WARNING LAMPS" .
OK or NG
OK >> GO TO 17.
NG >> Repair or replace combination meter or glow indicator lamp.
10. CHECK GLOW RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect glow relay.
3. Check voltage between glow relay terminals 1, 3 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.Continuity should exist.
PBIB0373E
Voltage: Battery voltage
PBIB1413E

EGR VOLUME CONTROL SYSTEM
EC-1551
[YD]
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EGR VOLUME CONTROL SYSTEMPFP:14710
DescriptionEBS0035N
SYSTEM DESCRIPTION
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
●Excessively high engine coolant temperature
●High engine speed
●Wide open throttle
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.
CONSULT-II Reference Value in Data Monitor ModeEBS0035O
Specification data are reference values.
Sensor Input Signal to ECM ECM Function Actuator
Crankshaft position sensor (TDC) 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
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