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3-98 FUEL SYSTEM (DFI)
Exhaust Butterfly Valve Actuator (Service Code 63)
If the reading is in specification, remove the ECU and
check the wiring for continuity between main harness con-
nectors.
Disconnect the ECU and actuator connectors.
Wiring Inspection
ECU Connector [A] ←→
Exhaust Butterfly Valve Actuator Connector [B]
W/Rlead(ECUterminal2)[C]
W/BL lead (ECU terminal 13) [D]
If the wiring is good, check the ECU for its ground and
power supply (see ECU Power Supply Inspection).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).
Exhaust Butterfly Valve Actuator Circuit
1. ECU
2. Exhaust Butterfly Valve Actuator
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