Page 1697 of 4555
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
EC-1293
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC Confirmation ProcedureEBS011EY
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.
TESTING CONDITION
Before performing the following procedure, confirm the ambient temperature is more than -20°C (-4°F).
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-1296, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF817Y
Page 1698 of 4555
EC-1294
[YD (WITH EURO-OBD)]
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
Wiring DiagramEBS011EZ
TBWA0733E
Page 1699 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
EC-1295
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse si NISSAN X-TRAIL 2005 Service Repair Manual DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
EC-1295
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse si](/manual-img/5/57403/w960_57403-1698.png)
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
EC-1295
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
4
5W/B
G/BFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.5 - 10V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm5 - 10V
21
22
23
24G/R
GY/L
G/R
GY/LFuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
40
41
42
43G/R
GY/L
G/R
GY/LFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
MBIB0883E
MBIB0884E
MBIB0881E
MBIB0882E
MBIB0881E
MBIB0882E
Page 1700 of 4555
EC-1296
[YD (WITH EURO-OBD)]
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
Diagnostic ProcedureEBS011F0
1. CHECK FUEL INJECOR POWER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect fuel injector harness connector.
4. Check harness continuity between the following terminals corre-
sponding to the malfunctioning cylinder.
Refer to Wiring Diagram.
5. 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 INTERMITTENT INCIDENT
Refer to EC-1045, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Terminal
Cylinder
ECM Fuel injector
43No.1
53No.2
53No.3
43No.4
Continuity should exist.
PBIB1896E
Page 1701 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1297
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC P2147, P2148 FUEL INJECTOR CIRCUITPFP:16600
Component DescriptionEBS011F3
The fuel injector is a sma NISSAN X-TRAIL 2005 Service Repair Manual DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1297
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC P2147, P2148 FUEL INJECTOR CIRCUITPFP:16600
Component DescriptionEBS011F3
The fuel injector is a sma](/manual-img/5/57403/w960_57403-1700.png)
DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1297
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
DTC P2147, P2148 FUEL INJECTOR CIRCUITPFP:16600
Component DescriptionEBS011F3
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the needle valve back and
allows fuel to flow through the fuel injector into the intake cylinder.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
CONSULT-II Reference Value in Data Monitor ModeEBS011F4
Specification data are reference values.
On Board Diagnosis LogicEBS011F6
DTC Confirmation ProcedureEBS011F7
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-1300, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0465E
MONITOR ITEM CONDITION SPECIFICATION
MAIN INJ WID
Engine: After warming up
Shift lever: Neutral position
Idle speedNo-load 0.68 - 0.78 msec
Blower fan switch: ON
Rear window defogger switch: ON0.78 - 0.88 msec
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2147
2147Fuel injector circuit low
inputECM detects the fuel injector circuit is shorted to
ground.
Harness or connectors
(The fuel injector circuit is shorted.)
P2148
2148Fuel injector circuit high
inputECM detects the fuel injector circuit is shorted to
power.
SEF817Y
Page 1702 of 4555
EC-1298
[YD (WITH EURO-OBD)]
DTC P2147, P2148 FUEL INJECTOR CIRCUIT
Wiring DiagramEBS011F8
TBWA0569E
Page 1703 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1299
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal NISSAN X-TRAIL 2005 Service Repair Manual DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1299
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal](/manual-img/5/57403/w960_57403-1702.png)
DTC P2147, P2148 FUEL INJECTOR CIRCUIT
EC-1299
[YD (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
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.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.) TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
4
5W/B
G/BFuel injector power supply
(For cylinder No. 1 and 4)
Fuel injector power supply
(For cylinder No. 2 and 3)[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.5 - 10V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm5 - 10V
21
22
23
24G/R
GY/L
G/R
GY/LFuel injector No. 2
Fuel injector No. 2
Fuel injector No. 3
Fuel injector No. 3[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
40
41
42
43G/R
GY/L
G/R
GY/LFuel injector No. 4
Fuel injector No. 4
Fuel injector No. 1
Fuel injector No. 1[Engine is running]
Warm-up condition
Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle.0 - 9V
[Engine is running]
Warm-up condition
Engine speed is 2,000 rpm0 - 9V
MBIB0883E
MBIB0884E
MBIB0881E
MBIB0882E
MBIB0881E
MBIB0882E
Page 1704 of 4555
EC-1300
[YD (WITH EURO-OBD)]
DTC P2147, P2148 FUEL INJECTOR CIRCUIT
Diagnostic ProcedureEBS011F9
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1055, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E