Nissan Tiida C11. Manual - part 621

EC-1134

< COMPONENT DIAGNOSIS >

[K9K]

P0120 ELECTRIC THROTTLE CONTROL ACTUATOR

P0120 ELECTRIC THROTTLE CONTROL ACTUATOR

Description

INFOID:0000000001162585

By default the valve is open when in the rest position and is actuated only when the engine is stopped; this has
a damping effect and helps to stop the engine.

DTC Logic

INFOID:0000000001162586

DTC DETECTION LOGIC

NOTE:
• The electric throttle control actuator function is no longer ensured when the engine is stopped or the valve is

closed, then the engine stalls or starting is impossible.

Diagnosis Procedure

INFOID:0000000001162587

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 ELECTRIC THROTTLE CONTROL ACTUATOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect electric throttle control actuator harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between electric throttle control actuator harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• IPDM E/R 
• Harness connectors E8, F8
• Harness for open or short between IPDM E/R and electric throttle control actuator
• Harness for open or short between ECM and electric throttle control actuator

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

4.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

DTC No.

Trouble diagnosis name

Possible cause

P0120

ELECTRIC THROTTLE CONTROL ACTUATOR CIRCUIT
• CC.0: Short circuit to ground
• CC.1: Short circuit to +12V
• CO:  Open  circuit

• Harness or connectors

(Electric throttle control actuator circuit is 
open or shorted.)

• Throttle position sensor
• Throttle control motor

Electric throttle control actua-

tor

Ground

Voltage

Connector

Terminal

F7

1

Ground

Battery voltage

P0120 ELECTRIC THROTTLE CONTROL ACTUATOR

EC-1135

< COMPONENT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

3.

Check the continuity between electric throttle control actuator harness connector and ECM harness con-
nector.

4.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

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

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace electric throttle control actuator.

NO

>> Repair or replace.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F7

5

F11

72

Existed

2

94

4

90

EC-1136

< COMPONENT DIAGNOSIS >

[K9K]

P0180 FPT SENSOR

P0180 FPT SENSOR

Description

INFOID:0000000001162588

Fuel pump temperature sensor is built in the fuel pump. The sensor detects the fuel temperature in the fuel
pump and calibrates the fuel injection amount change by fuel temperature.

DTC Logic

INFOID:0000000001162589

DTC DETECTION LOGIC

NOTE:
• Conditions for applying the diagnostic procedure to the stored DTCs:

 The DTC is declared present after the ignition has been switched on for at least 10 seconds.

Diagnosis Procedure

INFOID:0000000001162590

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 FUEL PUMP TEMPERATURE SENSOR SUPPLY CIRCUIT

1.

Disconnect fuel pump temperature sensor harness connector.

2.

Turn ignition switch ON.

3.

Check the voltage between fuel pump temperature sensor connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

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

3.

CHECK FUEL PUMP TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector.

3.

Check the continuity between fuel pump temperature sensor harness connector and ECM harness con-
nector.

4.

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

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.

DTC No.

Trouble diagnosis name

Possible cause

P0180

FUEL PUMP TEMPERATURE SENSOR CIRCUIT
• CC.0: Short circuit to ground
• CO.1: Open circuit or short circuit to +12V
• 1.DEF: Micro-breaks
• 2.DEF: Signal incoherence

• Harness or connectors

(Fuel pump temperature sensor circuit is 
open or shorted.)

• Fuel pump temperature sensor

Fuel pump temperature sensor

Ground

Voltage

Connector

Terminal

F29

1

Ground

Approx. 5V

Fuel pump temperature sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

F29

2

F10

29

Existed

P0180 FPT SENSOR

EC-1137

< COMPONENT DIAGNOSIS >

[K9K]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

CHECK FUEL PUMP TEMPERATURE SENSOR 

Refer to 

EC-1137, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace fuel pump temperature sensor.

5.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-55, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000001162591

1.

CHECK FUEL PUMP TEMPERATURE SENSOR

Check resistance between fuel pump temperature sensor terminals 1 and 2 under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace Engine coolant temperature sensor.

Condition

Resistance (

Ω

)

25

°

C (77

°

F)

2,051 

±

 123

50

°

C (112

°

F)

811 

±

 47

80

°

C (176

°

F)

309 

±

 17