Nissan March K13. Manual - part 207

FUEL PUMP

EC-289

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 10.

10.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B1, M7
• Harness for open or short between FPCM and ECM

>> Repair open circuit, short to ground or short to power in harness or connectors.

11.

CHECK FUEL PUMP CONTROL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect “fuel level sensor unit and fuel pump (main)” harness connector.

2.

Check the continuity between FPCM harness connector and “fuel level sensor unit and fuel pump (main)”
harness connector.

3.

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

Is the inspection result normal?

YES

>> GO TO 12.

NO

>> Repair open circuit, short to ground or short to power in harness or connectors.

12.

CHECK FUEL PUMP

Refer to 

EC-289, "Component Inspection (Fuel pump)"

.

Is the inspection result normal?

YES

>> GO TO 13.

NO

>> Replace fuel pump.

13.

CHECK FPCM

Refer to 

EC-290, "Component Inspection (FPCM)"

.

Is the inspection result normal?

YES

>> GO TO 14.

NO

>> Replace FPCM.

14.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-33, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection (Fuel pump)

INFOID:0000000006066588

1.

CHECK FUEL PUMP

1.

Turn ignition switch OFF.

2.

Disconnect “fuel level sensor unit and fuel pump (main)” harness connector.

3.

Check resistance between “fuel level sensor unit and fuel pump (main)” terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace “fuel level sensor unit and fuel pump (main)”

FPCM

Fuel level sensor unit and fuel pump (main)

Continuity

Connector

Terminal

Connector

Terminal

B31

6

B22

3

Existed

7

1

Terminals

Resistance

1 and 3

0.2 - 5.0 

Ω

 [at 25

°

C (77

°

F)]

EC-290

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

FUEL PUMP

Component Inspection (FPCM)

INFOID:0000000006066589

1.

CHECK FUEL PUMP CONTROL MODULE (FPCM)

1.

Check the voltage between FPCM terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace FPCM.

FPCM

Condition

Voltage

Connector

+

−

Terminal

Terminal

B31

7

6

For 1 second after turning ignition 
switch ON

Approx. 8.5 V

More than 1 second after turning 
ignition switch ON

Approx. 0 V

Idle speed

Approx. 8.5 V

IGNITION SIGNAL

EC-291

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

IGNITION SIGNAL

Component Function Check

INFOID:0000000005989401

1.

INSPECTION START

Turn ignition switch OFF, and restart engine.
Does the engine start?

YES-1 >> With CONSULT-III: GO TO 2.
YES-2 >> Without CONSULT-III: GO TO 3.
NO

>> Go to 

EC-291, "Diagnosis Procedure"

.

2.

IGNITION SIGNAL FUNCTION

With CONSULT-III

1.

Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.

2.

Make sure that each circuit produces a momentary engine speed drop.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-291, "Diagnosis Procedure"

.

3.

IGNITION SIGNAL FUNCTION

 Without CONSULT-III

1.

Let engine idle.

2.

Check the voltage signal between ECM harness connector and ground with an oscilloscope.

NOTE:
The pulse cycle changes depending on rpm at idle.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Go to 

EC-291, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000005989402

1.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-I

1.

Turn ignition switch OFF, wait at least 10 seconds and then turn ON.

2.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Go to 

EC-123, "Diagnosis Procedure"

.

ECM

Voltage signal

Connector

+

−

Terminal

Terminal

F7

17

108

18

21

22

JMBIA0219GB

ECM

Voltage

Connector

+

−

Terminal

Terminal

E16

105

108

Battery voltage

EC-292

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 1)]

IGNITION SIGNAL

2.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect condenser harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between condenser harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 3.

3.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-III

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R harness connector E11.

3.

Check the continuity between IPDM E/R harness connector and condenser harness connector.

4.

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

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> GO TO 4.

4.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors E8, F1
• Harness for open or short between IPDM E/R and condenser

>> Repair open circuit or short to ground or short to power in harness or connectors.

5.

CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Check the continuity between condenser harness connector and ground.

3.

Also check harness for short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair open circuit or short to ground or short to power in harness or connectors.

6.

CHECK CONDENSER

Refer to 

EC-295, "Component Inspection (Condenser)"

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace condenser.

7.

CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V

1.

Reconnect all harness connectors disconnected.

Condenser

Ground

Voltage

Connector

Terminal

F13

1

Ground

Battery voltage

IPDM E/R

Condenser

Continuity

Connector

Terminal

Connector

Terminal

E14

44

F13

1

Existed

Condenser

Ground

Continuity

Connector

Terminal

F13

2

Ground

Existed