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DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW

DTC P2102 THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW

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 ELECTRONIC THROTTLE CONTROL RELAY.

Turn the ignition switch to OFF.

Remove the electronic throttle control relay.

Connect the battery to electronic throttle control relay terminal No. 1 and No. 3.

Measure the resistance between electronic throttle control terminals.

Connector & terminal

No. 2 — No. 4:

Is the resistance less than 1 Ω?

Yes


No

Replace the electronic throttle control relay.


CHECK POWER TO ELECTRONIC THROTTLE CONTROL RELAY

Measure the voltage between electronic throttle control relay connector and chassis ground.

Connector & terminal

(B309) No. 1 (+) — Chassis ground (−):

(B309) No. 2 (+) — Chassis ground (−):

Is the voltage more than 5 V?

Yes


No

Repair the open power supply circuit or ground short.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL.

Disconnect the connector from ECM.

Turn the ignition switch to ON.

Measure the voltage between electronic throttle control relay connector and chassis ground.

Connector & terminal

(B309) No. 3 (+) — Chassis ground (−):

Is the voltage less than 5 V?

Yes


No

Repair the short of power supply circuit between ECM and electronic throttle control.


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY.

Turn the ignition switch to OFF.

Measure the resistance between electronic throttle control relay connector and chassis ground.

Connector & terminal

(B309) No. 3 — Chassis ground:

(B309) No. 4 — Chassis ground:

Is the resistance more than 1 MΩ?

Yes


No

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


CHECK HARNESS BETWEEN ECM AND ELECTRONIC THROTTLE CONTROL RELAY.

Measure the resistance between ECM connector and electronic throttle control relay connector.

Connector & terminal

(B135) No. 35 — (B309) No. 3:

(B137) No. 6 — (B309) No. 4:

Is the resistance less than 1 Ω?

Yes

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


No

Repair the open harness between ECM and electronic throttle control relay.