Service manual

Table Of Contents
FUEL SYSTEM (DFI) 3-75
ECU
Check the ECU power source voltage with a digital meter
[A].
Position the terminal in accordance with terminal numbers
of ECU connector [B] in this chapter figure.
Battery [C]
ECU Power Source Inspection
Meter Connections:
Between Terminal 8 (W) and Battery (–) Terminal
Between Term i na l 13 (BR) and Battery (–) Terminal
Ignition Switch OFF:
Terminal 8 (W): 0 V
Terminal 13 (BR): Battery Voltage
Ignition Switch ON:
Both: Battery Voltage
If the meter does not read as specified, check the follow-
ing.
Main Fuse 30 A (see Fuse Inspection in the Electrical
System chapter)
Power Source Wiring (see wiring diagram in this section)
If the fuse, reply and wiring are good, replace the ECU
(see ECU Removal/Installation).
ECU Power Source Circuit
1. ECU (Electronic Control Unit)
2. Engine Ground Terminal
3. Battery 12 V 12 Ah
4. Ignition Switch
5. Fuse Box
6. Main Fuse 30 A