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DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT HIGH INPUT

DTC P0223 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT HIGH INPUT

DTC DETECTING CONDITION:


• Immediately at fault recognition

• GENERAL DESCRIPTION


TROUBLE SYMPTOM:


• Erroneous idling

• Poor driving performance

• Engine stalls.


Important

After repair or replacement of faulty parts, conduct Clear Memory Mode and Inspection Mode .


WIRING DIAGRAM:


CHECK OUTPUT VOLTAGE OF SENSOR.

Turn the ignition switch to ON.

Read the data of sub throttle sensor signals, using the Vehicle Diagnostic Interface.

Is the measured value less than 4.73 V?

Yes


No


CHECK POOR CONTACT IN CONNECTORS.

Check poor contact in connectors between ECM and electronic throttle control.

Is there poor contact in the connectors between ECM and electronic throttle control?

Yes

Repair the poor contact in connectors.


No

Connector has returned to a normal condition at this time. A temporary poor contact of the connector may be the cause.


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

(B136) No. 29 — (E57) No. 4:

Is the measured value less than 1 Ω?

Yes


No

Repair the open circuit of harness connector.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

Connect the ECM connector.

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

Connector & terminal

(E57) No. 3 — Engine ground:

Is the measured value less than 5 Ω?

Yes


No

Repair the poor contact in ECM connector. If the problem persists, replace the ECM.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

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 measured value more than 10 V?

Yes


No

Repair the battery short of harness between ECM connector and electronic throttle control connector.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

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

Connector & terminal

(E57) No. 4 (+) — Engine ground (−):

Is the measured value less than 10 V?

Yes


No

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


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

Turn the ignition switch to OFF.

Disconnect the connector from ECM.

Measure the voltage between connectors.

Connector & terminal

(B136) No. 29 — (B136) No. 35:

Is the measured value more than 1 MΩ?

Yes

Repair the poor contact in electronic throttle control connector. If problem persists, replace the electronic throttle control.


No

Short circuit of sensor power supply may be the cause.