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Home >> Nissan-Datsun >> 2012 >> Cube L4-1.8L (MR18DE) >> Repair and Diagnosis >> A L L Diagnostic Trouble Codes ( DTC ) >> Testing and Inspection >> P Code Charts >> P2101 >> Except For California

Except For California




P2101 ELECTRIC THROTTLE CONTROL FUNCTION

Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
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 and it provides feedback to the ECM. ECM controls the throttle valve opening angle in response to driving condition via the throttle control motor.


DTC Logic


DTC DETECTION LOGIC

NOTE:
-If DTC P2101 is displayed with DTC P2100, first perform the trouble diagnosis for DTC P2100. Except For California.
-If DTC P2101 is displayed with DTC P2119, first perform the trouble diagnosis for DTC P2119. Except For California.






DTC CONFIRMATION PROCEDURE


1. PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V when engine is running.
- 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 .
NO- INSPECTION END


Diagnosis Procedure


1. CHECK GROUND CONNECTION

1.Turn ignition switch OFF.
2.Check ground connection E38. Circuit Inspection.
Is the inspection result normal?
YES- GO TO 2.
NO- Repair or replace ground connection.

2. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-I

1.Check the voltage between ECM harness connector and ground under the following conditions.





Is the inspection result normal?
YES- GO TO 9.
NO- GO TO 3.

3. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect ECM harness connector.
3.Disconnect IPDM E/R harness connector.
4.Check the continuity between ECM harness connector and IPDM E/R harness connector.





5.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 5.
NO- GO TO 4.

4. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors E8, F8
- Harness for open or short between ECM and IPDM E/R
- Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK THROTTLE CONTROL MOTOR RELAY INPUT SIGNAL CIRCUIT-II

1.Check the continuity between ECM harness connector and IPDM E/R harness connector.





2.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 7.
NO- GO TO 6.

6. DETECT MALFUNCTIONING PART

Check the following.
- Harness connectors E8, F1
- Harness for open or short between ECM and IPDM E/R
- Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK FUSE

1.Disconnect 15 A fuse (No. 64) from IPDM E/R.
2.Check 15 A fuse for blown.
Is the inspection result normal?
YES- GO TO 8.
NO- Replace 15 A fuse.

8. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
YES- Replace IPDM E/R. Removal And Installation With I-Key (With I-KEY) or Removal And Installation Without I-Key (Without I-KEY).
NO- Repair or replace harness or connectors.

9. 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 the continuity between electric throttle control actuator harness connector and ECM harness connector.





5.Also check harness for short to ground and short to power.
Is the inspection result normal?
YES- GO TO 10.
NO- Repair or replace.

10. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY

1.Remove the intake air duct. Exploded View.





2.Check if foreign matter is caught between the throttle valve (1)
and the housing.
-Electric throttle control actuator (2)
Is the inspection result normal?
YES- GO TO 11.
NO- Remove the foreign matter and clean the electric throttle control actuator inside, and then perform throttle valve closed position learning. Refer to "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement".

11. CHECK THROTTLE CONTROL MOTOR

.
Is the inspection result normal?
YES- GO TO 12.
NO- GO TO 13.

12. CHECK INTERMITTENT INCIDENT

Intermittent Incident.
Is the inspection result normal?
YES- GO TO 13.
NO- Repair or replace harness or connectors.

13. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR

1.Replace malfunction electric throttle control actuator.
2.Perform .
- INSPECTION END


Component Inspection


1. CHECK THROTTLE CONTROL MOTOR

1.Turn ignition switch OFF.
2.Disconnect electric throttle control actuator harness connector.
3.Check the resistance between electric throttle control actuator terminals 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.
2.Perform SEE Special Repair Requirement.
- INSPECTION END


Special Repair Requirement


1. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING

Except For California.
- GO TO 2.

2. PERFORM IDLE AIR VOLUME LEARNING

Except For California.
- END
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