Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p2103 throttle actuator "a" control motor circuit high

Subaru Legacy BN/BS (2015-2019) Service Manual / Engine (diagnostics)(h6do) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc p2103 throttle actuator "a" control motor circuit high

DTC DETECTING CONDITION:

Immediately at fault recognition

CAUTION:

After servicing or replacing faulty parts, perform Clear Memory Mode Clear Memory Mode > OPERATION, and Inspection Mode Inspection Mode > PROCEDURE.

WIRING DIAGRAM:

• Engine Electrical System ENGINE TYPE EZ (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

• Engine Electrical System ENGINE TYPE EZ (WITH PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK ELECTRONIC THROTTLE CONTROL RELAY. 1) Turn the ignition switch to OFF. 2) Remove the electronic throttle control relay. 3) Measure the resistance between electronic throttle control relay terminals. Terminals No. 22 — No. 23:	Is the resistance 1 M- or more-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2103 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT HIGH	Replace the electronic throttle control relay. Electrical Component Location
2.CHECK SHORT CIRCUIT OF ELECTRONIC THROTTLE CONTROL RELAY POWER SUPPLY. 1) Turn the ignition switch to ON. 2) Measure the voltage between electronic throttle control relay connector and chassis ground. Connector & terminal (B48) No. 22 (+) — Chassis ground (−):	Is the voltage 10 V or more-	Repair the short circuit to power in the harness between ECM connector and electronic throttle control relay.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2103 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT HIGH
3.CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY. 1) Turn the ignition switch to OFF. 2) Disconnect the connector from ECM. 3) Measure the resistance between ECM connector and chassis ground. Connector & terminal (B134) No. 65 — Chassis ground:	Is the resistance 1 M- or more-	Repair the poor contact of ECM connector.	Repair the short circuit to ground in harness between ECM connector and electronic throttle control relay.

1. OUTLINE OF DIAGNOSIS

Judge as NG when the electronic throttle control power is supplied even when ECM sets the electronic throttle control relay to OFF.

2. COMPONENT DESCRIPTION

(1)	Engine control module (ECM)	(3)	Drive circuit	(5)	Motor
(2)	Voltage detection circuit	(4)	Electronic throttle control relay

3. EXECUTION CONDITION

Secondary Parameters	Execution condition
Battery voltage	≥ 6 V
Electronic throttle control relay output	OFF

4. GENERAL DRIVING CYCLE

• When ignition switch ON > OFF

• Ignition switch OFF > ON (Only after clearing memory)

5. DIAGNOSTIC METHOD

If the duration of time while the following conditions are met is longer than the time indicated, judge as NG.

Judgment Value

Malfunction Criteria	Threshold Value
Motor power voltage	≥ 5 V

Time Needed for Diagnosis: 600 ms

Malfunction Indicator Light Illumination: Illuminates as soon as a malfunction occurs.

Dtc p2109 throttle/pedal position sensor "a" minimum stop performance

NOTE:For the diagnostic procedure, refer to DTC P2101. Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P2101 THROTTLE ACTUATOR "A" CONTROL MOTOR CIRCUIT RANGE/PERFORMANCE1. OUTLINE OF D ...

Dtc p2102 throttle actuator "a" control motor circuit low

DTC DETECTING CONDITION:Immediately at fault recognitionTROUBLE SYMPTOM:• Improper idling• Poor driving performance• Engine stalls.CAUTION:After servicing or replacing faulty parts, ...

Other materials:

Disassembly
1. DIFFERENTIAL CASE ASSEMBLY1. Remove the taper roller bearing using the ST.ST 498077000REMOVER2. Remove the hypoid driven gear mounting bolt using the ST.ST 18270KA020SOCKET (E20)3. Remove the differential case (LH).4. Remove the differential bevel gear and washer from differential case.5. R ...