DTC P2103 Throttle Actuator Control Motor Circuit High

WARNING: This page is about a different car, the 2006 Subaru Outback. However, it is still accessible from the selected car via links, so may be relevant.

DTC DETECTING CONDITION:

Immediately at fault recognition
GENERAL DESCRIPTION < Ref. to DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH , Diagnostic Trouble Code (DTC) Detecting Criteria. >

CAUTION: After repair or replacement of faulty parts, perform Clear Memory Mode < Ref. to OPERATION , Clear Memory Mode. > and Inspection Mode < Ref. to PROCEDURE , Inspection Mode. >.

WIRING DIAGRAM:

Fig 1: Electronic Throttle Control - Wiring Diagram

DTC P2103 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT HIGH - 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. 7 - No. 8:	Is the resistance more than 1 MΩ?	Go to step 2.	Replace the electronic throttle control relay.
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 (B362) No. 8 (+) Chassis around (-):	Is the voltage more than 5 V?	Go to step 3.	Repair the power supply short circuit of harness between ECM and electronic throttle control relay.
3 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY. Turn the ignition switch to OFF. Disconnect the connectors from ECM. Measure the resistance between ECM connector and chassis ground. Connector & terminal (B136) No. 21 - Chassis ground:	Is the resistance more than 1 MΩ?	Repair the poor contact of ECM connector. Replace the ECM if defective. < Ref. to ENGINE CONTROL MODULE (ECM) . >	Repair the ground short circuit of harness between ECM and electronic throttle control relay.