Nissan Sentra. Manual - part 437

 

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Nissan Sentra. Manual - part 437

 

 

EC-444

< DTC/CIRCUIT DIAGNOSIS >

[MRA8DE]

SENSOR POWER SUPPLY 2 CIRCUIT

SENSOR POWER SUPPLY 2 CIRCUIT

Description

INFOID:0000000009758701

ECM supplies a voltage of 5.0 V to some of the sensors systematically divided into 2 groups, respectively.

Accordingly, when a short circuit develops in a sensor power source, a malfunction may occur simultaneously

in the sensors belonging to the same group as the shorted-circuit sensor.

Sensor power supply 1

• Battery current sensor

• Crankshaft position (CKP) sensor (POS)

• Throttle position (TP) sensor

• Accelerator pedal position (APP) sensor 1

NOTE:

If sensor power supply 1 circuit is malfunctioning, DTC P0643 is displayed.

Sensor power supply 2

• Camshaft position (CMP) sensor (PHASE)

• Mass air flow (MAF) sensor

• Engine oil pressure (EOP) sensor

• Exhaust valve timing (EVT) control position sensor

• Accelerator pedal position (APP) sensor 2

• Intake manifold runner control valve position sensor

Diagnosis Procedure

INFOID:0000000009758702

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR 2 POWER SUPPLY CIRCUIT-1

1. Turn ignition switch OFF.

2. Disconnect accelerator pedal position (APP) sensor harness connector.

3. Turn ignition switch ON.

4. Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK ACCELERATOR PEDAL POSITION SENSOR 2 POWER SUPPLY CIRCUIT-2

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Turn ignition switch ON.

4. Check the continuity between APP sensor harness connector and ECM.

CVT models

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace error-detected parts.

3.

CHECK SENSOR POWER SUPPLY CIRCUITS

Check harness for short to power and short to ground, between the following terminals.

+

−

Voltage

(Approx.)

APP sensor

Connector

Terminal

E12

5

Ground

5.0 V

+

−

Continuity

APP sensor

ECM

Connector

Terminal

Connector

Terminal

E12

5

E16

118

Existed

SENSOR POWER SUPPLY 2 CIRCUIT

EC-445

< DTC/CIRCUIT DIAGNOSIS >

[MRA8DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK COMPONENTS

Check the following.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace malfunctioning component.

5.

CHECK APP SENSOR

Check APP sensor. Refer to 

EC-436, "Component Inspection (APP Sensor)"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Removal and Installation"

.

ECM

Sensor

Connector

Terminal

Name

Connector

Terminal

F24

32

CMP sensor (PHASE)

F39

1

40

EOP sensor

F2

1

44

EVT control position sensor

F57

1

F25

36

MAF sensor

F31

1

Sensor

Reference

CMP sensor (PHASE)

EC-282, "Component Inspection 
[CMP Sensor (PHASE)]"

MAF sensor

EC-188, "Component Inspection 
(MAF Sensor)"

EOP sensor

EC-342, "Component Inspection 
(EOP Sensor)"

EVT control position sensor

EC-360, "Component Inspection 
(EVT Control Position Sensor)"

EC-446

< DTC/CIRCUIT DIAGNOSIS >

[MRA8DE]

BRAKE PEDAL POSITION SWITCH

BRAKE PEDAL POSITION SWITCH

Component Function Check

INFOID:0000000009758703

1.

CHECK BRAKE PEDAL POSITION SWITCH FUNCTION

With CONSULT

1. Turn ignition switch ON.

2. Select “ENGINE” using CONSULT.

3. Select “BRAKE SW1” in “DATA MONITOR” mode.

4. Check “BRAKE SW1” indication under the following conditions.

Without CONSULT

1. Turn ignition switch ON.

2. Check the voltage between ECM harness connector terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to 

EC-446, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009758704

1.

CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch harness connector.

3. Turn ignition switch ON.

4. Check the voltage between brake pedal position switch harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT

1. Pull out #5 fuse.

2. Check that the fuse is not fusing.

3. Check the continuity between stop lamp switch harness connector and fuse terminal.

Monitor item

Condition

Indication

BRAKE SW1

Brake pedal

Slightly depressed

OFF

Fully released

ON

ECM

Condition

Voltage

(Approx.)

Connector

+

–

Terminal

Terminal

E16

116

127

Brake pedal

Slightly depressed

0 V

Fully released

Battery voltage

+

−

Voltage

Brake pedal position switch

Connector

Terminal

E36

1

Ground

Battery voltage

BRAKE PEDAL POSITION SWITCH

EC-447

< DTC/CIRCUIT DIAGNOSIS >

[MRA8DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> Check power supply circuit for 12V battery power supply.

NO

>> Repair or replace error-detected parts.

3.

CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

3. Check the continuity between brake pedal position switch harness connector and ECM harness connec-

tor.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK BRAKE PEDAL POSITION SWITCH

Check brake pedal position switch. Refer to 

EC-447, "Component Inspection (Brake Pedal Position Switch)"

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-39, "Intermittent Incident"

.

NO

>> Replace brake pedal position switch. Refer to 

BR-22, "Exploded View"

.

Component Inspection (Brake Pedal Position Switch)

INFOID:0000000009758705

1.

CHECK BRAKE PEDAL POSITION SWITCH-I

1. Turn ignition switch OFF.

2. Disconnect brake pedal position switch harness connector.

3. Check the continuity between brake pedal position switch terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK BRAKE PEDAL POSITION SWITCH-II

1. Adjust brake pedal position switch installation. Refer to 

BR-15, "Adjustment"

.

2. Check the continuity between brake pedal position switch terminals under the following conditions.

+

−

Continuity

Brake pedal position switch

Connector

Terminal

E36

1

#5 fuse ter-

minal

Existed

+

−

Continuity

Brake pedal position switch

ECM

Connector

Terminal

Connector

Terminal

E36

2

E16

116

Existed

Brake pedal position switch

Condition

Continuity

+

−

Terminals

1

2

Brake pedal

Fully released

Existed

Slightly depressed

Not existed

 

 

 

 

 

 

 

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