Many malfunctions in the electrical system are caused by poor harness and terminals.

Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.

Thoroughly check all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.

Has a problem been found?

	▶ Repair as necessary and then go to "Verification of Vehicle Repair" procedure.
	▶ Go to "EWGA Feedback Sensor Circuit Inspection" procedure.

Ignition "OFF".

Refer to "Shop Manual" and disconnect Electric Waste Gate Actuator (EWGA) connector.

Ignition "ON".

Measure voltage between Pin No. 6 (Power) terminal of Electric Waste Gate Actuator (EWGA) harness connector and chassis ground.

Is measured value within specification?

	▶ Go to "Ground Circuit Inpsection" procedure.
	▶ Repair open or short in power circuit between Electric Waste Gate Actuator (EWGA) and ECM/PCM and then go to "Verification of vehicle Repair" procedure.

Ignition "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect Electric Waste Gate Actuator (EWGA) connector.

Measure voltage between Pin No. 5 (Ground) terminal of Electric Waste Gate Actuator (EWGA) harness connector and chassis ground.

Is measured value within specification?

	▶ Go to "Signal Circuit Inpsection" procedure.
	▶ Repair open or short in ground circuit between Electric Waste Gate Actuator (EWGA) and chassis ground and then go to "Verification of vehicle Repair" procedure.

Ignition "OFF"

Refer to "Shop Manual" and disconnect Electric Waste Gate Actuator (EWGA) connector.

Ignition "ON"

Measure voltage between Pin No. 4 (Power) terminal of Electric Waste Gate Actuator (EWGA) harness connector and chassis ground.

Is measured value within specification?

	▶ Go to "EWGA DC Motor Output Circuit Inpsection" procedure.
	▶ Repair open or short in signal circuit between Electric Waste Gate Actuator (EWGA) and ECM/PCM and then go to "Verification of vehicle Repair" procedure.

Ignition "OFF"

Disconnect battery (-) cable.

Refer to "Shop Manual" and disconnect Electric Waste Gate Actuator (EWGA) and ECM/PCM connectors.

Measure resistance between Pin No. 1 (Output +) terminal of Electric Waste Gate Actuator (EWGA) harness connector and Pin No. 42 (Output +) terminal of ECM/PCM harness connector.

Measure resistance between Pin No. 3 (Output -) terminal of Electric Waste Gate Actuator (EWGA) harness connector and Pin No. 21 (Output -) terminal of ECM/PCM harness connector.

Is measured value within specification?

	▶ Go to "Component Inpsection" procedure.
	▶ Repair open or short in control circuit between Electric Waste Gate Actuator (EWGA) and ECM/PCM and then go to "Verification of vehicle Repair" procedure.