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SELF-DIAGNOSIS SYSTEM 17-73 Exhaust Butterfly Valve Actuator (Service Code 63) Exhaust Butterfly Valve Actuator Resistance • Turn the ignition switch off. • Disconnect the exhaust butterfly valve actuator lead con- • Set the hand tester to the × 1 Ω range and connect it to the exhaust butterfly valve actuator connector. Special Tool - Hand Tester: 57001-1394 • Measure the exhaust butterfly valve actuator resistance. Exhaust Butterfly Valve Actuator Resistance Connections: P lead ←→ GY lead Standard: 5 ∼ 200 Ω (for reference) If the reading is 0 or infinity ( ∞ ) Ω , replace the exhaust butterfly valve actuator. If the reading is in specification, remove the ECU and ○ Disconnect the ECU and actuator connectors. Wiring Inspection ECU Connector [A] ←→ Exhaust Butterfly Valve Actuator Connector [B] W/BL lead (ECU terminal 2) [C] W/R lead (ECU terminal 13) [D] If the wiring is good, check the ECU for its ground and Exhaust Butterfly Valve Actuator Circuit 1. ECU |