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3-108 FUEL SYSTEM (DFI)
ECU
•
Check the ECU power source voltage with a digital meter
[A].
○
Position the terminal in accordance with terminal numbers
of ECU connectors [B] in the figure.
Battery [C]
ECU Power Source Inspection
Tester
Connections: between 33 (BR) Terminal and
Battery (–) Terminal
between 15 (W/ BK) Terminal an d
Battery (–) Terminal
between 32 (W/BK) and Battery
(–) Terminal
Ignition Switch OFF: 33 (BR) Terminal, 0 V
15 (W/BK) Terminal, Battery
Voltage
32 (W/BK) Terminal, Battery
Voltage
Ignition Switch ON: 33 (BR) Terminal, Battery Voltage
15 (W/BK) Terminal, Battery
Voltage
32 (W/BK) Terminal, Battery
Voltage
If the tester does not read as specified, check the follow-
ing.
Power Source Wiring (see wiring diagram in this section)
Main Fuse 30 A (see Fuse Inspection in the Electrical
System chapter)
ECU Fuse 15 A (see ECU Fuse Inspection)
If the wiring and fuse are good, replace the ECU (see ECU
section).
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