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EC-308 < COMPONENT DIAGNOSIS > [VK56DE] P1226 TP SENSOR P1226 TP SENSOR Component Description INFOID:0000000005149358 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 addi- tion, 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 sig- nals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condi- tion. On Board Diagnosis Logic INFOID:0000000005149359 The MIL will not light up for this self-diagnosis. DTC Confirmation Procedure INFOID:0000000005149360 NOTE: If DTC Confirmation Procedure has been previously conducted, always perform the following procedure before conducting the next step. Before performing the following procedure, confirm that battery voltage is more than 10 V at idle. 1. Turn ignition switch ON. 2. Turn ignition switch OFF and wait at least 10 seconds. 3. Turn ignition switch ON. 4. Repeat steps 2 and 3 for 32 times. 5. Check 1st trip DTC. 6. If 1st trip DTC is detected, go to Diagnosis Procedure INFOID:0000000005149361 1. CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY 1. Turn ignition switch OFF. 2. Remove the intake air duct. 3. Check if foreign matter is caught between the throttle valve and the housing. OK or NG OK >> GO TO 2. NG >> Remove the foreign matter and clean the electric throttle control actuator inside. PBIB0145E DTC No. Trouble diagnosis name DTC detecting condition Possible cause P1226 Closed throttle position learning Closed throttle position learning is not performed • Electric throttle control actuator (TP sensor 1 and 2) BBIA0364E |