Nissan Frontier. Manual — part 581

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

EC-895

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

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

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

OK or NG

>> Replace IPDM E/R. Refer to

PCS-28, "Removal and Installation of IPDM E/R"

>> Repair or replace harness or connectors.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

1. Turn ignition switch OFF.

2. Disconnect electric throttle control actuator harness connector.

3. Disconnect ECM harness connector.

4. Check harness continuity between the following terminals.

Refer to Wiring Diagram.

5. Also check harness for short to ground and short to power.
OK or NG

>> GO TO 10.

>> Repair or replace.

10.

CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1. Remove the intake air duct.

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

the housing.

OK or NG

>> GO TO 11.

>> Remove the foreign matter and clean the electric throttle

control actuator inside, and then perform throttle valve

closed position learning. Refer to

EC-591, "Throttle

Valve Closed Position Learning"

11.

CHECK THROTTLE CONTROL MOTOR

Refer to

EC-896, "Component Inspection"

OK or NG

>> GO TO 12.

>> GO TO 13.

12.

CHECK INTERMITTENT INCIDENT

Refer to

GI-42, "Intermittent Incident"

OK or NG

>> GO TO 13.

>> Repair or replace harness or connectors.

13.

REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1. Replace the electric throttle control actuator. Refer to

EM-142, "Exploded View"

2. Perform

EC-591, "Throttle Valve Closed Position Learning"

3. Perform

EC-591, "Idle Air Volume Learning"

Electric throttle control

actuator terminal

ECM terminal

Continuity

Should not exist

Should exist

Should not exist

BBIA0543E

BBIA0554E

EC-896

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P2101 ELECTRIC THROTTLE CONTROL FUNCTION

>> INSPECTION END

Component Inspection

INFOID:0000000009481597

THROTTLE CONTROL MOTOR

1. Disconnect electric throttle control actuator harness connector.
2. Check resistance between terminals 5 and 6.

3. If NG, replace electric throttle control actuator and go to next step.
4. Perform

EC-591, "Throttle Valve Closed Position Learning"

5. Perform

EC-591, "Idle Air Volume Learning"

Resistance: Approximately 1 - 15

Ω [at 25 °C (77°F)]

P2118 THROTTLE CONTROL MOTOR

EC-897

< DTC/CIRCUIT DIAGNOSIS >

[VQ40DE FOR USA AND CANADA]

P2118 THROTTLE CONTROL MOTOR

Component Description

INFOID:0000000009481598

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

via the throttle control motor.

On Board Diagnosis Logic

INFOID:0000000009481599

This self-diagnosis has the one trip detection logic.

FAIL-SAFE MODE

When the malfunction is detected, the ECM enters fail-safe mode and the MIL illuminates.

DTC Confirmation Procedure

INFOID:0000000009481600

1. If DTC Confirmation Procedure has been previously conducted, always perform the following before con-

ducting the next step.

a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON and wait at least 2 seconds.
3. Start engine and let it idle for 5 seconds.
4. Check DTC.
5. If DTC is detected, go to

EC-897, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000009481601

CHECK GROUND CONNECTIONS

1. Turn ignition switch OFF.

2. Loosen and retighten three ground screws on the body. Refer to

EC-617, "Ground Inspection"

OK or NG

>> GO TO 2.

>> Repair or replace ground connections.

CHECK THROTTLE CONTROL MOTOR OUTPUT SIGNAL CIRCUIT FOR OPEN OR SHORT

DTC No.