Troubleshooting

DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH

CIRCUIT DESCRIPTION

DTC Detection Condition:

The throttle motor is operated by the ECM and it opens and closes the throttle valve.

The opening angle of the throttle valve is detected by the throttle position sensor which is mounted on the throttle body. The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to control the throttle motor and monitor the throttle opening angle as the ECM responds to driver inputs.

If this malfunction is detected, the ECM shuts down the power for the throttle motor, the throttle valve is closed by the return spring, and the throttle valve is locked at a certain opening angle. Also, the whole electronically controlled throttle operation is cancelled until the system returns to normal or the ignition switch is turned OFF.

HINT: This electrical throttle system does not use a throttle cable.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

The ECM monitors the current flows through the electronic throttle motor and detects malfunctions or an open circuit in the throttle motor based on the current value. When the current deviates from standard range, the ECM concludes that there is a fault in the throttle motor ECM turns on MIL and a DTC is set.

Example:
The current is more than 10 A. Or the current is less than 0.5 A when the motor driving duty ratio is exceeding 80 %. The ECM concludes that the current is out of range, turns on the MIL and a DTC is set.

Wiring Diagram:

Step 1 - 2:

INSPECTION PROCEDURE

HINT: Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.