Honda Civic manuals

Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc p0223 throttle/pedal position sensor/switch "b" circuit high

DTC DETECTING CONDITION:

Immediately at fault recognition

TROUBLE SYMPTOM:

Improper idling

Poor driving performance

Engine stalls.

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 FB (WITHOUT PUSH BUTTON START) Engine Electrical System > WIRING DIAGRAM

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

STEPCHECKYESNO

1.CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connectors from ECM and electronic throttle control.

3) Measure the resistance of harness between ECM connector and electronic throttle control connector.

Connector & terminal

(E158) No. 31 — (E57) No. 4:

(E158) No. 34 — (E57) No. 3:

Is the resistance less than 1 --

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH

Repair the open circuit of harness between ECM connector and electronic throttle control connector.

2.CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Connect the connector to ECM.

2) Measure the resistance between electronic throttle control connector and engine ground.

Connector & terminal

(E57) No. 3 — Engine ground:

Is the resistance less than 5 --

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH

Repair the harness and connector.

NOTE:

In this case, repair the following item:

Open circuit of harness between ECM connector and engine ground

Poor contact of ECM connector

Poor contact of coupling connector

3.CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Turn the ignition switch to ON.

2) Measure the voltage between electronic throttle control connector and engine ground.

Connector & terminal

(E57) No. 4 (+) — Engine ground (−):

Is the voltage 5 V or more-

Repair the short circuit to power in the harness between ECM connector and electronic throttle control connector.

Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH "B" CIRCUIT HIGH

4.CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL CONNECTOR.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from ECM.

3) Measure the resistance between ECM connectors.

Connector & terminal

(E158) No. 32 — (E158) No. 31:

Is the resistance 1 M- or more-

Repair the poor contact of electronic throttle control connector. Replace the electronic throttle control if defective. Throttle Body

Repair the short circuit to power in the harness between ECM connector and electronic throttle control connector.

1. OUTLINE OF DIAGNOSIS

Detect the open or short circuit of throttle position sensor 2.

Judge as NG if out of specification.

2. COMPONENT DESCRIPTION

(1)

Throttle position sensor 1 signal

(3)

Throttle position sensor

(4)

Engine control module (ECM)

(2)

Throttle position sensor 2 signal

3. EXECUTION CONDITION

Secondary Parameters

Execution condition

Battery voltage

≥ 6 V

4. GENERAL DRIVING CYCLE

Always perform the diagnosis continuously.

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

Sensor 2 input voltage

≥ 4.782 V

Time Needed for Diagnosis: 24 ms

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

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