P0223
P0222, P0223 TP Sensor
Component Description
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the ECM. In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
On Board Diagnosis Logic
These self-diagnoses have the one trip detection logic.
Fail-Safe Mode
When the malfunction is detected, ECM enters fail-safe mode and the MIL illuminates.
DTC Confirmation Procedure
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next step.
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 10 V at idle.
4) Start engine and let it idle for 1 second.
5) Check DTC.
6) If DTC is detected, go to "Diagnosis Procedure".
Diagnosis Procedure
1. CHECK GROUND CONNECTIONS
1 Turn ignition switch OFF.
2 Loosen and retighten three ground screws on the body. Refer to [Power Supply and Ground Circuit Check] Power Supply and Ground Circuit Check.
OK or NG
OK
GO TO 2.
NG
Repair or replace ground connections.
2. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1 Disconnect electric throttle control actuator harness connector.
2 Turn ignition switch ON.
3 Check voltage between electric throttle control actuator terminal 2 and ground with SDT or tester.
OK or NG
OK
GO TO 7.
NG
GO TO 3.
3. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1 Turn ignition switch OFF.
2 Disconnect ECM harness connector.
3 Check harness continuity between electric throttle control actuator terminal 2 and ECM terminal 47.
Refer to Wiring Diagram.
OK or NG
OK
GO TO 4.
NG
Repair open circuit.
4. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
[P2127, P2128 APP Sensor] [1][2]Electrical Diagrams
OK or NG
OK
GO TO 5.
NG
Repair short to ground or short to power in harness or connectors.
5. CHECK APP SENSOR
Refer to P2127.
OK or NG
OK
GO TO 11.
NG
GO TO 6.
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1 Replace accelerator pedal assembly. Refer to [Accelerator Control System: Component] Component.
2 Perform [Accelerator Pedal Released Position Learning] Testing and Inspection.
3 Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
4 Perform [Idle Air Volume Learning] Idle Air Volume Learning.
INSPECTION END
7. CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1 Turn ignition switch OFF.
2 Disconnect ECM harness connector.
3 Check harness continuity between electric throttle control actuator terminal 4 and ECM terminal 66.
Refer to Wiring Diagram.
4 Also check harness for short to ground and short to power.
OK or NG
OK
GO TO 8.
NG
Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1 Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 1.
Refer to Wiring Diagram.
2 Also check harness for short to ground and short to power.
OK or NG
OK
GO TO 9.
NG
Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK THROTTLE POSITION SENSOR
Refer to "Component Inspection".
OK or NG
OK
GO TO 11.
NG
GO TO 10.
10. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1 Replace the electric throttle control actuator. Refer to [Intake Manifold Collector: Exploded View] Intake Manifold Collector Exploded View.
2 Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
3 Perform [Idle Air Volume Learning] Idle Air Volume Learning.
INSPECTION END
11. CHECK INTERMITTENT INCIDENT
Refer to [Service Information for Electrical Incident: Intermittent Incident] Service Information for Electrical Incident: Intermittent Incident.
INSPECTION END
Component Inspection
Throttle Position Sensor
1) Reconnect all harness connectors disconnected.
2) Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
3) Turn ignition switch ON.
4) Set selector lever to D position (A/T), 1st position (M/T).
5) Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.
6) If NG, replace electric throttle control actuator and go to the next step. Refer to [Intake Manifold Collector: Exploded View] Intake Manifold Collector Exploded View.
7) Perform [Throttle Valve Closed Position Learning] Throttle Valve Closed Position Learning.
8) Perform [Idle Air Volume Learning] Idle Air Volume Learning.