10181549-10181547-10181561-10181563-10181551-10181557-10181553-10181555-10181559

COMPONENT LOCATION

GENERAL DESCRIPTION

The idle speed is controlled by the Electrical Throttle Control(ETC) System. ETC system is composed of the throttle motor to operate the throttle valve and the throttle position sensor to detect the opening angle of the throttle valve, the accelerator pedal position sensor to detect the accelerator pedal position and the one valve type throttle body. The ECM controls the throttle motor to provide the proper throttle valve opening angle for the target idle speed.

DTC DESCRIPTION

Checking idle RPM from under detecting condition, if the idle speed is more than 200 RPM above desired idle speed, PCM sets P0507. MIL(Malfunction Indication Lamp) turns on when the malfunction lasts till cosecutive 2 driving cycle.

DTC DETECTING CONDITION

Item	Detecting Condition	Possible cause
DTC Strategy	● Determines if a high idle condition exists.	● Poor connection ● Intake system/Vapor hoses for air leakage or disconnection ● Faulty Accelerator cable ● Faulty ETS motor ● Faulty TPS ● Faulty ETS system ● Faulty PCM
Enable Conditions	● Normal Idle conditions ● Canister Purge Fuel Flow ≤ 100 ● Barometric Pressure 〉 72kPa ● Engine running ≥ 2 sec ● Air Intake Temperature ≥ -20℃ (-4℉) ● Coolant Temperature ≥ 0℃ (32℉) ● 11V ≤ Ignition Voltage ≤ 16V ● Above conditions met period 〉3 sec
Thresh old value	● Real engine speed - Target engine speed 〉200rpm
Diagnosis Time	● Continuous
MIL On Condition	● 2 driving cycles

MONITOR DTC STATUS

Check DTC Status

(1)

Connect scantool to Data Link Connector(DLC).

(2)

IG "ON".

(3)

Select "Diagnostic Trouble Codes(DTCs)" mode, and then Press F4(DTAL) to check DTC's information from the DTCs menu

(4)

Read "DTC Status" parameter.

(5)

Is parameter displayed "Present fault"?

▶ Go to "Terminal and connector inspection" procedure.

▶ Fault is intermittent caused by poor contact in the sensor’s and/or PCM’s connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

TERMINAL AND CONNECTOR INSPECTION

Many malfunctions in the electrical system are caused by poor harness and terminals. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.

Has a problem been found?

▶ Repair as necessary and go to "Verification of Vehicle Repair" procedure

▶ Go to " System Inspection " procedure

SYSTEM INSPECTION

Check intake/exhaust system for blockage

(1)

Visually/physically inspect the following items:

- Intake system for air leakage

- Vapor hoses for cracks or disconnection

(2)

Has a problem been found in any of the above areas?

▶ Replace or repair as necessary and go to "Verification of Vehicle Repair" procedure

▶ Go to "Visually check ETS System" as below

Visually check ETS System

(1)

Ignition "OFF"

(2)

Remove the air hose between MAF sensor and Throttle body.

(3)

Visually check the overall ETS system(Throttle valve,ETS motor,APS and TPS).

(4)

Has a problem been found?

▶ Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

▶ Go to " Component Inspection" procedure.

COMPONENT INSPECTION

Check Accelerator Cable

(1)

Ignition "OFF" ＆ Engine "OFF"

(2)

Check free play of accelerator Cable

Specification 1.0 ~ 3.0mm(0.04 ~ 0.12 in)

(3)

Is the measured resistance within specifications?

▶ Go to "Check TPS" as below

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

Check ETS motor

(1)

Ignition "OFF"

(2)

Disconnect ETS motor connector

(3)

Measure resistance between terminals "1" and "2" of the ETS motor connector.

Specification: Approx. 1.275 ~ 1.725Ω at 20℃(68 °F)

Item	Sensor Resistance
Coll Resistance (Ω)	1.275 ~ 1.725Ω (20℃)

(4)

Are the TPS resistance within specifications?

▶ Go to "Check TPS" as below

Check TPS

(1)

Disconnect TPS connector and measure resistance between terminals 4 and 8 of the TPS connector.

Specification : Approx. 4.0~6.0kΩ( with throttle valve fully closed) at 20°C(68°F)

(2)

Disconnect TPS connector and measure resistance between terminals 1 and 5 of the TPS connector.

Specification:

Item	Sensor Resistance
TPS 1	4.0 ~ 6.0 ㏀ (20℃)
TPS 2	2.72 ~ 4.08 ㏀ (20℃)

(3)

Are the TPS resistance within specifications?

▶ 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. If PCM needs to be replaced, do "ETS Initialization" after it is replaced.

▶ Substitute with a known-good TPS and check for proper operation.If the problem is corrected, replace TPS and then do "ETS Initialization". And 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 10 second)

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.

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

Using a Scantool, Clear the DTCs

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

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

Are any DTCs present ?

▶ Go to the applicable troubleshoooting procedure.

▶ System is performing to specification at this time.