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3-102 FUEL SYSTEM (DFI)
Oxygen Sensor - Incorrect Output Voltage (Service Code 94, Equipped Models)
If the reading is out of the standard (with plugs: DC 0.7
V or more, without plugs: DC 0.2 V or less), check the
following.
Fuel Pressure (see Fuel Pressure Inspection)
Fuel Injector (see Fuel Injectors section)
If the fuel pressure and fuel injectors are good, replace
the sensor.
If the reading is within the standard (with plugs: DC 0.7 V
or more, without plugs: DC 0.2 V or less), 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).
Oxygen Sensor Circuit
1. ECU
2. Frame Ground
3. Meter Ground
4. Oxygen Sensor
5. Ignition Switch
6. Relay Box
7. ECU Main Relay
8. Starter Relay
9. FI Fuse 15 A
10. Main Fuse 30 A
11. Battery 12 V 8 Ah
12. Water-proof Joint C
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