Nissan Pathfinder. Instruction - part 525

EC-406

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR

DTC Logic

INFOID:0000000009178331

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A AND B

1. Turn ignition switch ON and wait at least 1 second.

2. Shift selector lever to the D position and wait at least 3 seconds.

3. Shift selector lever to the P position.

4. Turn ignition switch OFF and wait at least 10 seconds.

5. Turn ignition switch ON and wait at least 1 second.

6. Shift selector lever to the D position and wait at least 3 seconds.

7. Shift selector lever to the P position.

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

9. Check DTC.
Is DTC detected?

YES

>> Proceed to 

EC-407, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C

1. Turn ignition switch ON and wait at least 1 second.

2. Shift selector lever to the D position and wait at least 3 seconds.

3. Shift selector lever to the N or P position.

4. Start engine and let it idle for 3 seconds.

5. Check DTC.
Is DTC detected?

YES

>> Proceed to 

EC-407, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009178332

1.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Turn ignition switch OFF.

2. Remove the intake air duct. Refer to 

EM-26, "Removal and Installation"

.

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P2119

ETC ACTR-B1
(Throttle actuator control 
throttle body range/perfor-
mance)

A)

Electric throttle control actuator does not function 
properly due to the return spring malfunction.

• Electric throttle control actuator

B)

Throttle valve opening angle in fail-safe mode is 
not in specified range.

C)

ECM detects that the throttle valve is stuck open.

P2119 ELECTRIC THROTTLE CONTROL ACTUATOR

EC-407

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

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EC

N

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3. Check if foreign matter is caught between the throttle valve and

the housing.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Remove the foreign matter and clean the electric throttle

control actuator inside, and then perform throttle valve

closed position learning. Refer to 

EC-142, "Description"

.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to 

EM-26, "Removal and Installation"

.

2. Go to 

EC-143, "Description"

.

>> INSPECTION END

JSBIA2864ZZ

EC-408

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2122, P2123 APP SENSOR

P2122, P2123 APP SENSOR

DTC Logic

INFOID:0000000009178333

DTC DETECTION LOGIC

NOTE:

If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.

Refer to 

EC-354, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-

ing the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

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

>> Proceed to 

EC-409, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009178334

1.

CHECK APP SENSOR 1 POWER SUPPLY

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 2.

NO

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

2.

CHECK APP SENSOR 1 GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM harness connector.

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

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P2122

APP SEN 1/CIRC
(Throttle/Pedal position sensor/
switch “D” circuit low)

An excessively low voltage from the APP 
sensor 1 is sent to ECM.

• Harness or connectors

(APP sensor 1 circuit is open or shorted.)

• Accelerator pedal position sensor

(APP sensor 1)

P2123

APP SEN 1/CIRC
(Throttle/Pedal position sensor/
switch “D” circuit high)

An excessively high voltage from the APP 
sensor 1 is sent to ECM.

APP sensor

Ground

Voltage

(Approx.)

Connector

Terminal

E31

4

Ground

5 V

P2122, P2123 APP SENSOR

EC-409

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

J

K

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EC

N

P

O

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

YES

>> GO TO 3.

NO

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

3.

CHECK APP SENSOR 1 INPUT SIGNAL CIRCUIT

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 4.

NO

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

4.

CHECK APP SENSOR

Check APP sensor. Refer to 

EC-410, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-49, "Intermittent Incident"

.

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Removal and Installation"

.

Component Inspection

INFOID:0000000009178335

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 terminals under the following conditions.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace accelerator pedal assembly. Refer to 

ACC-3, "Removal and Installation"

.

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

2

E16

100

Existed

APP sensor

ECM

Continuity

Connector

Terminal

Connector

Terminal

E31

3

E16

97

Existed

ECM

Condition

Voltage (V)

Connector

+

–

Terminal

E16

97

100

Accelerator pedal

Fully released

0.5 - 1.0

Fully depressed

4.2 - 4.8

98

116

Fully released

0.25 - 0.50

Fully depressed

2.0 - 2.5