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P1233


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. 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.




DTC Logic

DTC DETECTION LOGIC

NOTE:
If DTC P1233 or P2101 is displayed with DTC P1238, P2119, first perform the trouble diagnosis for DTC
P1238, P2119. P1238.
If DTC P1233 or P2101 is displayed with DTC P1290, P2100, first perform the trouble diagnosis for DTC
P1290, P2100. P1290.






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 SEE 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.
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 E10, F10
- 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 E10, F10
- 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 if 15 A fuse is 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.
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 malfunctioning part.
10.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Remove the intake air duct. Exploded View.





2. Check that no 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.
11.CHECK THROTTLE CONTROL MOTOR
SEE Component Inspection.
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 SEE 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.
2. Perform SEE Special Repair Requirement.
- INSPECTION END




Special Repair Requirement
1.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Special Repair Requirement
- GO TO 2.
2.PERFORM IDLE AIR VOLUME LEARNING
Special Repair Requirement
- END
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