Oxygen Sensor - not activated (Service Code 17, Equipped Models)
If the reading is out of the standard, remove the ECU and
check the wiring for continuity between harness connec-
Disconnect the ECU and sensor connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→
Oxygen Sensor Connector [B]
GY/W lead (ECU terminal 3) [C]
G/P lead (ECU terminal 4) [D]
If the wiring is good, replace the sensor.
If the reading is within the standard, check the ECU for
its ground and power supply (see ECU Power Supply In-
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation).
FUEL SYSTEM (DFI) 3-49