COMPONENT LOCATION
GENERAL DESCRIPTION

The Electronic Throttle Control(ETC) system is made of the components throttle body, Throttle Position Sensor(TPS)1＆2 and Accelerator Position Sensor(APS) 1＆2. The throttle body contains the actuator, the throttle plate and the throttle position sensor (potentiometer), which are integrated in one housing. The actuator consists of a DC motor with a two-stage gear. The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. And it provides feedback to the ECM to control the throttle motor in order to control the throttle valve opening angle properly in response to the driving condition.

DTC DESCRIPTION

If PCM recognizes vehicle state as forced idle under detecting condition, it sets P2104 and MIL(Malfunction Indication Lamp) turns on.

DTC DETECTING CONDITION

Item

Detecting Condition

Possible cause

DTC Strategy

●

This code detects if the system is in Forced Idle Mode

●

Faulty APS

●

Faulty APS+Brake

●

Faulty APS + Vehicle speed sensor

●

Faulty APS + Vehicle speed sensor + Brake

●

Faulty PCM

Enable Conditions

●

Ignition "ON"

Threshold value

●

Forced Idle Mode is active

DiagnosisTime

●

-

MIL On Condition

●

1 Driving Cycle

SCHEMATIC DIAGRAM
MONITOR SCANTOOL DATA
1.

Connect scantool to DLC(Data Link Connector)

2.

IG "ON" ＆ Monitor that any different DTC(Diagnostic Trouble Code) is existed.

(There will be at least one more DTC which causes this DTC P2104 to retrieve )

3.

Repair the DTCs cause DTC P2104 first according to the designated trouble shooting guide.

(After repairing the DTCs cause DTC P2104 , don't forget to do "ETC Initialization" as follows.)

4.

Is the same DTC occurred ?

▶Substitute with a known-good PCM and check for proper operation. If the problem is corrected,replace PCM and then go to "Verification of Vehicle Repair" procedure.

note

There is a memory reset function on scantool that can erase optional parts automaticallydetected and memorized by PCM.Before or after testing PCM on the vehicle, use this function to reuse the PCM on the others

▶ Go to "Verification of Vehicle Repair" procedure.

※ Procedure of ETS Initialization

1. Erase the trouble codes on PCM

2. Turn the ignition key off and keep this condition until the main relay is turned off.(It will takes 10sec.)

3. Turn ignition key on more than 1second to record the throttle motor position on the EEPROM

VERIFICATION OF VEHICLE REPAIR

After a repair, it is essential to verify that the fault has been corrected.

1.

Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode

2.

Press F4(DTAL) and confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions

3.

Read "DTC Status" parameter

4.

Is parameter displayed "History(Not Present) fault"?

▶ System performing to specification at this time. Clear the DTC.

▶ Go to the applicable troubleshooting procedure.

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