Nissan Maxima. Manual - part 494

EC-460

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

3. Disconnect ECM harness connector.

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

nector.

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

YES

>> GO TO 8.

NO

>> Repair or replace malfunctioning part.

8.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 

1. Remove the intake air duct. Refer to 

EM-24, "Removal and Installation"

.

2. Check if foreign matter is caught between the throttle valve (1)

and the housing.

Is the inspection result normal?

YES

>> GO TO 9.

NO

>> Remove the foreign matter and clean the electric throttle

control actuator inside, and then perform throttle valve

closed position learning. Refer to 

EC-21, "THROTTLE

VALVE CLOSED POSITION LEARNING : Special

Repair Requirement"

.

9.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-460, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 10.

NO

>> GO TO 11.

10.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 11.

NO

>> Repair or replace harness or connectors.

11.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to 

EM-25, "Removal and Installation"

.

2. Refer to 

EC-461, "Special Repair Requirement"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010095163

1.

CHECK THROTTLE CONTROL MOTOR

1. Turn ignition switch OFF.

2. Disconnect electric throttle control actuator harness connector.

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F57

5

F14

5

Not existed

6

Existed

6

5

Existed

6

Not existed

2: Electric throttle control actuator

: Vehicle front

ALBIA0611ZZ

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-461

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

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3. Check resistance between electric throttle control actuator termi-

nals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to 

EM-25, "Removal and Installation"

.

2. Go to 

EC-461, "Special Repair Requirement"

.

>> INSPECTION END

Special Repair Requirement

INFOID:0000000010095164

1.

PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Refer to 

EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"

>> GO TO 2.

2.

PERFORM IDLE AIR VOLUME LEARNING

Refer to 

EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"

>> END

Terminals

Resistance

5 and 6

Approx. 1 - 15 

Ω [at 25°C (77°F)]

PBIB2909E

EC-462

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

P2118 THROTTLE CONTROL MOTOR

P2118 THROTTLE CONTROL MOTOR

Description

INFOID:0000000010095165

The throttle control motor is operated by the ECM and it opens and closes the throttle valve.

The current opening angle of the throttle valve is detected by the throttle position sensor. The throttle position

sensor it provides feedback to the ECM, when opens/closes the throttle valve in response to driving conditions

via the throttle control motor.

DTC Logic

INFOID:0000000010095166

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

1. Turn ignition switch ON and wait at least 2 seconds.

2. Start engine and let it idle for 5 seconds.

3. Check DTC.
Is DTC detected?

YES

>> Go to 

EC-462, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010095167

Regarding Wiring Diagram information, refer to 

EC-554, "Wiring Diagram"

.

1.

CHECK GROUND CONNECTION

1. Turn ignition switch OFF.

2. Check ground connection E9. Refer to Ground Inspection in 

GI-44, "Circuit Inspection"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1. Disconnect electric throttle control actuator harness connector.

2. Disconnect ECM harness connector.

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

nector.

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P2118

Throttle control motor 
circuit short

ECM detects short in both circuits between 
ECM and throttle control motor.

• Harness or connectors

(Throttle control motor circuit is shorted.)

• Electric throttle control actuator

(Throttle control motor)

P2118 THROTTLE CONTROL MOTOR

EC-463

< DTC/CIRCUIT DIAGNOSIS >

[VQ35DE]

C

D

E

F

G

H

I

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K

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M

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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 or replace malfunctioning part.

3.

CHECK THROTTLE CONTROL MOTOR

Refer to 

EC-463, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 5.

4.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-41, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Repair or replace harness or connectors.

5.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to 

EM-25, "Removal and Installation"

.

2. Go to 

EC-464, "Special Repair Requirement"

.

>> INSPECTION END

Component Inspection

INFOID:0000000010095168

1.

CHECK THROTTLE CONTROL MOTOR

1. Turn ignition switch OFF.

2. Disconnect electric throttle control actuator harness connector.

3. Check resistance between electric throttle control actuator termi-

nals as per the following.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace electric throttle control actuator. Refer to 

EM-25, "Removal and Installation"

.

2. Go to 

EC-461, "Special Repair Requirement"

.

>> INSPECTION END

Electric throttle control actuator

ECM

Continuity

Connector

Terminal

Connector

Terminal

F57

5

F14

5

Not existed

6

Existed

6

5

Existed

6

Not existed

Terminals

Resistance

5 and 6

Approx. 1 - 15 

Ω [at 25°C (77°F)]

PBIB2909E