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DTC P0222 Throttle/Pedal Position Sensor/Switch "B" Circuit Low Input

DTC DETECTING CONDITION:

Immediately at fault recognition
GENERAL DESCRIPTION < Refer to DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT LOW INPUT , Diagnostic Trouble Code (DTC) Detecting Criteria. >

TROUBLE SYMPTOM:

Erroneous idling
Poor driving performance
Engine stalls.

WIRING DIAGRAM:

Fig 1: Electronic Throttle Control - Wiring Diagram

G05031724

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC CHART

Step	Check	Yes	No
1 CHECK SENSOR OUTPUT. Turn the ignition switch to ON. Read the data of sub throttle sensor signal using Subaru Select Monitor. NOTE: Subaru Select Monitor For detailed operation procedures, refer to "READ CURRENT DATA FOR ENGINE". < Refer to SUBARU SELECT MONITOR . >	Is the voltage more than 0.8 V?	Go to step 2.	Go to step 3.
2 CHECK POOR CONTACT. Check poor contact in connector between ECM and electronic throttle control.	Is there poor contact?	Repair the poor contact.	Temporary poor contact occurred, but it is normal at present.
3 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL. Turn the ignition switch to OFF. Disconnect the connectors from ECM. Disconnect the connectors from electronic throttle control. Measure the resistance between ECM connector and electronic throttle control connector. Connector & terminal (B134) No. 28 - (E57) No. 4: (B134) No. 19 - (E57) No. 5:	Is the resistance less than 1 Ω?	Go to step 4.	Repair the open circuit of harness connector.
4 CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL. Measure the resistance between ECM connector and chassis ground. Connector & terminal (B134) No. 28 - Chassis ground: (B134) No. 19 - Chassis ground:	Is the resistance more than 1 MΩ?	Go to step 5.	Repair the chassis short circuit of harness.
5 CHECK SENSOR POWER SUPPLY. Connect the ECM connector. Turn the ignition switch to ON. Measure the voltage between electronic throttle control connector and engine ground. Connector & terminal (E57) No. 5 (+) - Engine ground (-):	Is the voltage 4.5 - 5.5 V?	Go to step 6.	Repair poor contact in ECM connector. Replace the ECM if defective. < Refer to ENGINE CONTROL MODULE (ECM) . >
6 CHECK SHORT CIRCUIT INSIDE THE ECM. Turn the ignition switch to OFF. Measure the resistance between electronic throttle control connector and engine ground. Connector & terminal (E57) No. 4 - Engine ground:	Is the resistance more than 10Ω?	Repair the poor contact of electronic throttle control connector. Replace the electronic throttle control if defective.	Repair poor contact in ECM connector. Replace the ECM if defective. < Refer to ENGINE CONTROL MODULE (ECM) . >