Nissan March K13. Manual - part 251

P2122, P2123 APP SENSOR

EC-465

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

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Special Repair Requirement

INFOID:0000000006037388

1.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to 

EC-104, "Work Procedure"

.

>> GO TO 2.

2.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-105, "Work Procedure"

.

>> GO TO 3.

3.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-106, "Work Procedure"

.

>> END

EC-466

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P2127, P2128 APP SENSOR

P2127, P2128 APP SENSOR

DTC Logic

INFOID:0000000006037389

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

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 that battery voltage is more than 10 V at idle.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Start engine and let it idle for 1 second.

2.

Check DTC.

Is DTC detected?

YES

>> Go to 

EC-466, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000006037390

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to Ground Inspection in 

XX-XX, "*****"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I

1.

Disconnect accelerator pedal position (APP) sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between APP sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 3.

3.

CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2127

Accelerator pedal position 
sensor 2 circuit low input

An excessively low voltage from the 
APP sensor 2 is sent to ECM.

• Harness or connectors

(APP sensor 2 circuit is open or shorted.)
[Crankshaft position sensor (POS) circuit is shorted.]
(Refrigerant pressure sensor circuit is shorted.)

• Accelerator pedal position sensor

(APP sensor 2)

• Crankshaft position sensor (POS)
• Refrigerant pressure sensor

P2128

Accelerator pedal position 
sensor 2 circuit high input

An excessively high voltage from the 
APP sensor 2 is sent to ECM.

APP sensor

Ground

Voltage

Connector

Terminal

M206

5

Ground

Approx. 5 V

P2127, P2128 APP SENSOR

EC-467

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

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3.

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

Is the inspection result normal?

YES

>> GO TO 4.

NO

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

4.

CHECK SENSOR POWER SUPPLY CIRCUIT

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK COMPONENTS

Check the following.
• Refrigerant pressure sensor (Refer to 

EC-297, "Diagnosis Procedure"

.)

• Crankshaft position sensor (POS) (Refer to 

EC-428, "Component Inspection"

.)

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> Replace malfunctioning component.

6.

CHECK APP SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

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

4.

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

Is the inspection result normal?

YES

>> GO TO 7.

NO

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

7.

CHECK APP SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

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

2.

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

Is the inspection result normal?

YES

>> GO TO 8.

NO

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

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

M206

5

E16

102

Existed

ECM

Sensor

Connector

Terminal

Item

Connector

Terminal

F8

74

Refrigerant pressure sensor

E49

3

75

CKP sensor (POS)

F20

1

E16

102

APP sensor

M206

5

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

M206

1

E16

104

Existed

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

M206

6

E16

103

Existed

EC-468

< DTC/CIRCUIT DIAGNOSIS >

[HR12DE (TYPE 2)]

P2127, P2128 APP SENSOR

8.

CHECK APP SENSOR

Refer to 

EC-468, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 9.

9.

REPLACE ACCELERATOR PEDAL ASSEMBLY

1.

Replace accelerator pedal assembly.

2.

Perform 

EC-468, "Special Repair Requirement"

.

>> INSPECTION END

10.

CHECK INTERMITTENT INCIDENT

Refer to 

XX-XX, "*****"

.

>> INSPECTION END

Component Inspection

INFOID:0000000006037391

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR

1.

Reconnect all harness connectors disconnected.

2.

Turn ignition switch ON.

3.

Check the voltage between ECM harness connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Exploded View"

.

Special Repair Requirement

INFOID:0000000006037392

1.

PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING

Refer to 

EC-104, "Work Procedure"

.

>> GO TO 2.

2.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-105, "Work Procedure"

.

>> GO TO 3.

3.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-106, "Work Procedure"

.

>> END

ECM

Condition

Voltage

Connector

+

−

Terminal

Terminal

E16

110

(APP sensor 1 signal)

111

Accelerator 
pedal

Fully released

0.6 - 0.9 V

Fully depressed

3.9 - 4.7 V

103

(APP sensor 2 signal)

104

Fully released

0.3 - 0.6 V

Fully depressed

1.95 - 2.4 V