17-102 SELF-DIAGNOSIS SYSTEM
Exhaust Butterfly Valve Actuator (Service Code 63) (DTC P0475)
Disconnect the exhaust butterfly valve actuator lead con-
nector (2 pins connector) [A].
Connect a tester to the exhaust butterfly valve actuator
Measure the exhaust butterfly valve actuator resistance.
Exhaust Butterfly Valve Actuator Resistance
P lead ←→ GY lead
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
check the wiring for continuity between main harness con-
Disconnect the ECU and actuator connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Exhaust Butterfly Valve Actuator Connector [B]
ECU Terminal 54 [C] ←→ Actuator Terminal [D]
ECU Terminal 55 [E] ←→ Actuator Terminal [F]
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection in the
Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation in the Fuel System (DFI)
Exhaust Butterfly Valve Actuator Circuit
2. Exhaust Butterfly Valve Actuator