Nissan Tiida C11. Manual - part 635

EC-1190

< COMPONENT DIAGNOSIS >

[K9K]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

2.

Disconnect electric throttle control actuator harness connector.

3.

Check resistance between electric throttle control actuator terminals as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace electric throttle control actuator.

Terminals

Resistance

1 and 2

21 

±

 2.1

Ω

 [23

°

C (73

°

F)]

P2120 APP SENSOR

EC-1191

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P2120 APP SENSOR

Description

INFOID:0000000001162667

The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensors detect the accelera-
tor pedal position and sends a signal to the ECM. The ECM uses the
signal to determine the amount of fuel to be injected.

DTC Logic

INFOID:0000000001162668

DTC DETECTION LOGIC

NOTE:
• If DTC P2120 is displayed with DTC P0641, first perform trouble diagnosis for DTC P0641. Refer to

EC-1180, "DTC Logic"

.

• Conditions for applying the diagnostic procedure to the stored DTCs: 
- The DTC is declared present after a series of full load-no load accelerator pedal actions have been carried

out (engine stopped, ignition on).

• If the DTC is present:
- Malfunction indicator (Red) lights up.

Diagnosis Procedure

INFOID:0000000001162669

1.

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

 Check ground connection E15. Refer to Ground inspection in 

GI-58, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK ACCELERATOR PEDAL POSITION SENSOR POWER SUPPLY CIRCUIT

1.

Disconnect accelerator pedal position sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between accelerator pedal position sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

PBIB1741E

DTC No.

Trouble diagnosis name

Possible cause

P2120

ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT
• CC.1: Short circuit to +12V
• CO.0: Open circuit or short circuit to ground

• Harness or connectors

(APP sensor 2 circuit is open or shorted.)

• Accelerator pedal position sensor 

(APP sensor 2)

Accelerator pedal position sensor

Ground

Voltage

Sensor

Connector

Terminal

2

E12 (LHD models)

M204 (RHD models)

5

Ground

Approx. 5V

EC-1192

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[K9K]

P2120 APP SENSOR

• Harness connectors E7, M69 (RHD models)
• Harness connectors M25, M201 (RHD models)
• Harness for open or short between ECM and accelerator pedal position sensor

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

4.

CHECK ACCELERATOR PEDAL POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect accelerator pedal position sensor.

3.

Check the continuity between accelerator pedal position 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 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

• Harness connectors E7, M69 (RHD models)
• Harness connectors M25, M201 (RHD models)
• Harness for open or short between ECM and accelerator pedal position sensor

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

6.

CHECK ACCELERATOR PEDAL POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Check the continuity between accelerator pedal position 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

>> GO TO 7.

7.

DETECT MALFUNCTIONING PART

• Harness connectors E7, M69 (RHD models)
• Harness connectors M25, M201 (RHD models)
• Harness for open or short between ECM and accelerator pedal position sensor

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

8.

CHECK ACCELERATOR PEDAL POSITION SENSOR 

Refer to 

EC-1193, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Replace accelerator pedal position sensor.

9.

CHECK INTERMITTENT INCIDENT

Accelerator pedal position sensor

ECM

Continuity

Sensor

Connector

Terminal

Connector

Terminal

2

E12 (LHD models)

M204 (RHD models)

1

E16

120

Existed

Accelerator pedal position sensor

ECM

Continuity

Sensor

Connector

Terminal

Connector

Terminal

2

E12 (LHD models)

M204 (RHD models)

6

E16

119

Existed

P2120 APP SENSOR

EC-1193

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Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001162670

1.

CHECK ACCELERATOR PEDAL POSITION SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect accelerator pedal position sensor harness connector.

3.

Check resistance between accelerator pedal position sensor as follows.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accelerator pedal position sensor.

Sensor

Terminals

Resistance

1

2 and 4

1.7 

±

 0.9 K

Ω

 

2

1 and 5

2.85 

±

 2.05 K

Ω