ECD SYSTEM(w/o DPF), Diagnostic DTC:P2100, P2101, P2102, P2103

DTC Code	DTC Name
P2100	Throttle Actuator Control Motor Circuit / Open
P2101	Throttle Actuator Control Motor Circuit Range/Performance
P2102	Throttle Actuator Control Motor Circuit Low
P2103	Throttle Actuator Control Motor Circuit High

DESCRIPTION

The ECM opens and closes the throttle valve using a DC motor type actuator. With the throttle valve, the exhaust gas recirculation volume can be properly controlled by opening and closing the valve. Also, engine vibration and noise will be reduced by closing the valve when the engine is stopped.

P2100
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Turn the ignition switch to ON and wait for 10 seconds (Monitor this DTC only once per driving cycle)	Open in throttle actuator circuit (1 trip detection logic)	Open in throttle actuator circuit Diesel throttle body assembly ECM

P2101
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine idling for more than 30 seconds after engine start	Short in throttle actuator circuit (1 trip detection logic)	Short in throttle actuator circuit Diesel throttle body assembly ECM

P2102
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine idling for more than 30 seconds after engine start	Short in throttle actuator circuit (1 trip detection logic)	Short in throttle actuator circuit Diesel throttle body assembly ECM

P2103
DTC Detection Drive Pattern	DTC Detection Condition	Trouble Area
Engine idling for more than 30 seconds after engine start	Short in throttle actuator circuit (1 trip detection logic)	Short in throttle actuator circuit Diesel throttle body assembly ECM

Related Data List
DTC No.	Data List
P2100	Actual Throttle Position Target Throttle Position Throttle Sensor Volt % Throttle Motor DUTY
P2101
P2102
P2103

Tech Tips

If DTC P2100, P2101, P2102 or P2103 is stored, the following symptoms may appear:

Lack of power due to fail-safe operation

WIRING DIAGRAM

Refer to DTC P0122 Click here.

CAUTION / NOTICE / HINT

Note

When replacing the ECM, the ECM needs Registration and Initialization Click here.

Tech Tips

When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, and other data from the time the malfunction occurred.

PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (DIESEL THROTTLE TARGET ANGLE)
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to ON and turn the tester on.
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Diesel Throttle Target Angle.
4. When changing the Active Test value from 0 to 90%, check that Actual Throttle Position smoothly changes to the set opening angle.
  
  OK
  
  Value smoothly changes to the set opening angle.
NEXT

OK
Value smoothly changes to the set opening angle.

CHECK HARNESS AND CONNECTOR (DIESEL THROTTLE BODY ASSEMBLY - ECM)

Disconnect the diesel throttle body assembly connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance

Tester Connection	Condition	Specified Condition
A59-43 (M+) - B29-2 (M+)	Always	Below 1 Ω
A59-42 (M-) - B29-1 (M-)	Always	Below 1 Ω
A59-43 (M+) or B29-2 (M+) - Body ground	Always	10 kΩ or higher
A59-42 (M-) or B29-1 (M-) - Body ground	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR Click here

INSPECT DIESEL THROTTLE BODY ASSEMBLY
1. Inspect the diesel throttle body assembly Click here.
OK
CHECK WHETHER DTC OUTPUT RECURS (DTC P2100, P2101, P2102 OR P2103) Click here

NG
REPLACE DIESEL THROTTLE BODY ASSEMBLY
1. Replace the diesel throttle body assembly Click here.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch to ON and turn the tester on.
4. Clear DTCs Click here.
5. Turn the ignition switch to off within 10 seconds of clearing DTCs, and wait for 30 seconds.
  
  Tech Tips
  
  The ignition switch must be turned off before DTC recurs.
6. Turn the ignition switch to ON and wait for 10 seconds or more.
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P2100, P2101, P2102 OR P2103)

Connect the intelligent tester to the DLC3.
Turn the ignition switch to ON and turn the tester on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for 30 seconds or more.
Turn the ignition switch to ON and wait for 10 seconds or more.
Start the engine and wait for 30 seconds or more.
Enter the following menus: Powertrain / Engine and ECT / DTC.

Read the DTC.

Result
Result	Proceed to
DTC P2100, P2101, P2102 or P2103	A
No DTC output	B

END

REPLACE ECM
1. Replace the ECM Click here.
NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED Click here
REPAIR OR REPLACE HARNESS OR CONNECTOR

NEXT
CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
1. Connect the intelligent tester to the DLC3.
2. Turn the ignition switch to ON and turn the tester on.
3. Clear the DTCs Click here.
4. Turn the ignition switch off and wait for 30 seconds or more.
5. Turn the ignition switch to ON and wait for 10 seconds or more.
6. Start the engine and wait for 30 seconds or more.
7. Enter the following menus: Powertrain / Engine and ECT / DTC.
8. Confirm that the DTC is not output again.
NEXT
END