DTC P2103 Throttle Actuator Control Motor Circuit High: Wiring Diagram

Fig 1: Throttle Position Sensor - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK ELECTRONIC THROTTLE CONTROL RELAY.  Turn the ignition switch to OFF. Remove the electronic throttle control relay. Measure the resistance between electronic throttle control relay terminals. Terminals  No. 15 - No. 16:	Is the resistance 1 MΩ or more?	Go to step 2  .	Replace the electronic throttle control relay. Ref. to ELECTRICAL COMPONENT LOCATION .
2 CHECK SHORT CIRCUIT OF ELECTRONIC THROTTLE CONTROL RELAY POWER SUPPLY.  Turn the ignition switch to ON. Measure the voltage between electronic throttle control relay connector and chassis ground. Connector & terminal  (B220) No. 15 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Repair the short circuit to power in harness between ECM and electronic throttle control relay.	Go to step 3  .
3 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY.  Turn the ignition switch to OFF. Disconnect the connector from ECM. Measure the resistance between ECM and chassis ground. Connector & terminal  (B135) No. 17 - Chassis ground:	Is the resistance 1 MΩ or more?	Repair the poor contact of ECM connector.	Repair the ground short circuit of harness between ECM and electronic throttle control relay.