Nissan Primera P12. Manual - part 282

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

EC-313

[YD (WITH EURO-OBD)]

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EC

Diagnostic Procedure

EBS013SU

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten engine ground screws. Refer to

EC-82,

"Ground Inspection"

.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace ground connections.

2.

CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1.

Disconnect fuel injector harness connector.

2.

Disconnect ECM harness connector.

3.

Check harness continuity between the following terminals corre-
sponding to the malfunctioning cylinder.
Refer to Wiring Diagram.

4.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace.

3.

CHECK FUEL INJECTOR

Refer to

EC-314, "Component Inspection"

.

OK or NG

OK

>> GO TO 4.

NG

>> Replace fuel injector.

MBIB0915E

Cylinder

Terminal

Continuity

Fuel injector

ECM

No.1

3

42, 43

Should not exist

4

Should exist

4

42,43

Should exist

4

Should not exist

No.2

3

21, 22

Should not exist

5

Should exist

4

21, 22

Should exist

5

Should not exist

No.3

3

23, 24

Should not exist

5

Should exist

4

23, 24

Should exist

5

Should not exist

No.4

3

40, 41

Should not exist

4

Should exist

4

40, 41

Should exist

4

Should not exist

MBIB0085E

EC-314

[YD (WITH EURO-OBD)]

DTC P2147, P2148 FUEL INJECTOR CIRCUIT

4.

CHECK INTERMITTENT INCIDENT

Refer to

EC-75, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

.

>> INSPECTION END

Component Inspection

EBS013SV

FUEL INJECTOR

1.

Disconnect fuel injector.

2.

Check continuity between terminals as shown in the figure.

3.

If NG, replace fuel injector.

Removal and Installation

EBS013SW

FUEL INJECTOR

Refer to

EM-39, "INJECTION TUBE AND FUEL INJECTOR"

.

Continuity should exist.

PBIB0406E

DTC P2228, P2229 BARO SENSOR

EC-315

[YD (WITH EURO-OBD)]

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EC

DTC P2228, P2229 BARO SENSOR

PFP:23731

Description

EBS013SX

The barometric pressure sensor is built into ECM. The sensor
detects ambient barometric pressure and sends the voltage signal to
the microcomputer.

On Board Diagnosis Logic

EBS013SY

DTC Confirmation Procedure

EBS013SZ

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-316, "Diagnostic Procedure"

.

WITH GST

Follow the procedure “WITH CONSULT-II” above.

MBIB0625E

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2228

Barometric pressure sen-
sor circuit low input

An excessively low voltage from the barometric
pressure sensor (built-into ECM) is sent to ECM.

●

ECM

P2229

Barometric pressure sen-
sor circuit high input

An excessively high voltage from the barometric
pressure sensor (built-into ECM) is sent to ECM.

SEF058Y

EC-316

[YD (WITH EURO-OBD)]

DTC P2228, P2229 BARO SENSOR

Diagnostic Procedure

EBS013T0

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-315, "DTC Confirmation Procedure"

, again.

5.

Is 1st trip DTC P2228 or P2229 displayed again?

With GST

1.

Turn ignition switch ON.

2.

Select MODE4 with GST.

3.

Touch “ERASE”.

4.

Perform

EC-315, "DTC Confirmation Procedure"

, again.

5.

Is 1st trip DTC P2228 or P2229 displayed again?

Yes or No

Yes

>> GO TO 2.

No

>> INSPECTION END

2.

REPLACE ECM

1.

Replace ECM.

2.

Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to

EC-35, "NATS

(Nissan Anti-theft System)"

.

3.

Perform Fuel Pump Learning Valve Clearing. Refer to

EC-29, "Fuel Pump Learning Value Clearing"

.

>> INSPECTION END