P2101
P1233, 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 to control the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P1233 or P2101 is displayed with DTC P1238, P1290, P2100 or 2119, first perform the trouble diagnosis for DTC P1238, P2119 or P1290, P2100. Refer to "DTC Logic" P1238
DTC CONFIRMATION PROCEDURE
1. PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting 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 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 "Diagnosis Procedure" .
NO- INSPECTION END
Diagnosis Procedure
1. CHECK GROUND CONNECTION
1.Turn ignition switch OFF.
2.Check ground connection M95. Refer to Ground Inspection in "Circuit Inspection" 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
Check the voltage between ECM harness connector terminals as per the following.
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 E7.
4.Check the continuity between IPDM E/R 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 5.
NO- GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F1
- Harness connectors F104, F105
- Harness for open or short between ECM and IPDM E/R
- Repair open circuit, 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 IPDM E/R 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 7.
NO- GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors E3, F1
- Harness for open or short between ECM and IPDM E/R
- Repair open circuit, short to ground or short to power in harness or connectors.
7. CHECK FUSE
1.Disconnect 15 A fuse (No. 51) 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
Refer to "Intermittent Incident" Intermittent Incident.
Is the inspection result normal?
YES- Replace IPDM E/R. Refer to "Removal and Installation" Removal and Installation.
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.
2.Check if foreign matter is caught between the throttle valve (1)
and the housing.
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
Refer to "Component Inspection" .
Is the inspection result normal?
YES- GO TO 12.
NO- GO TO 13.
12. CHECK INTERMITTENT INCIDENT
Refer to "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. Refer to "Exploded View" Exploded View.
2.Go to "Special Repair Requirement" .
- INSPECTION END
Component Inspection
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 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 malfunctioning electric throttle control actuator. Refer to "Exploded View" Exploded View.
2.Go to "Special Repair Requirement" .
- INSPECTION END
Special Repair Requirement
1. PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Refer to "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement" Special Repair Requirement
- GO TO 2.
2. PERFORM IDLE AIR VOLUME LEARNING
Refer to "IDLE AIR VOLUME LEARNING : Special Repair Requirement" Special Repair Requirement
- END