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STC-14 < COMPONENT DIAGNOSIS > [WITHOUT 4WAS] ENGINE SPEED SIGNAL CIRCUIT NO >> Replace ECM. Refer to EC-15, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : . 4. CHECK ENGINE SPEED SIGNAL (2) 1. Turn the ignition switch OFF. 2. Connect power steering control unit harness connector. 3. Check signal between power steering control unit harness connector and ground with oscilloscope. Also check harness for short to ground and short to power. Is the inspection result normal? YES >> GO TO 5. NO >> Replace power steering control unit. Refer to 5. CHECK TERMINALS AND HARNESS CONNECTORS • Check power steering control unit pin terminals for damage or loose connection with harness connector. Is the inspection result normal? YES >> INSPECTION END NO >> Repair or replace damaged parts. Power steering control unit Value (Approx.) Connector Terminal Condition M108 10 – Ground Engine speed: At idle Engine speed: Approx. 2,000 rpm PBIA3654J PBIA3655J |