COMPONENT LOCATION
GENERAL DESCRIPTION

ETC(Electronic Throttle Control Valve) is the device controlling amount of air to engine acccording to driver's intension. Different from the existing mechanical throttle valve which is composed of accelerator pecal and connecting wire cable, ETC consists of a motor, a throttle body and a throttle position sensor. Receiving input signals from electronic accelerator pedal module, PCM lets ETC motor control throttle valve. With ETC, cruise control system works without any additional device.

DTC DESCRIPTION

PCM recognizes vehicle state as forced idle under detecting condition, and sets P2104. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till 1 driving cycle.

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

EnableConditions

●

Ignition "ON"

Threshold value

●

Forced Idle Mode is active

DiagnosisTime

●

-

MIL On Condition

●

1 Driving Cycles

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.

Monitor and record the Freeze Frame Data for the Diagnostic Trouble Code(DTC) which has been diagnosed.

2.

Using a Scantool, Clear the DTCs

3.

Operate the vehicle within conditions noted in the freeze frame data or enable conditions

4.

Monitor that all rediness test have been verified as " Complete "

5.

Are any DTCs present ?

▶ Go to the applicable troubleshoooting procedure.

▶ System is performing to specification at this time.

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