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DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT LOW INPUT

DTC P0222 THROTTLE/PEDAL POSITION SENSOR/SWITCH “B” CIRCUIT LOW 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 data of sub throttle sensor signal using Vehicle Diagnostic Interface.

Is the measured value more than 0.8 V?

Yes


No


CHECK POOR CONTACT IN CONNECTORS.

Check poor contact in the connectors between the 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 connector from ECM.

Disconnect the connector from electronic throttle control.

Measure the resistance between the 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 harness connector.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

Check the resistance between the ECM connector and chassis ground.

Connector & terminal

(B136) No. 29 — Chassis ground:

Is the measured value more than 1 MΩ?

Yes


No

Repair the chassis short of harness.


CHECK POWER SUPPLY TO SENSOR.

Connect the ECM connectors.

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 within 4.5 to 5.5 V?

Yes


No

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


CHECK SHORT OF 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 measured value more than 10 Ω?

Yes

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


No

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