3-74 FUEL SYSTEM (DFI)
ECU Power Supply Inspection
Remove the number plate (see Number Plate Removal in
the Frame chapter).
Visually inspect the ECU connectors.
If the connector is clogged with mud or dust, blow it off
with compressed air.
Remove the ECU (see ECU Removal).
Visually inspect the terminals [A] of the ECU connectors.
If the terminals of the main harness connector are dam-
aged, replace the main harness.
If the terminals of the ECU connector are damaged, re-
place the ECU.
Left Radiator Shroud (see Radiator Shroud Removal in
the Frame chapter)
Capacitor Lead Connector [A]
Disconnect the ECU connectors [A].
Set the hand tester [B] to the × 1 Ω range and check the
following wiring for continuity.
Special Tool - Hand Tester: 57001-1394
ECU Grounding Inspection
ECU Connector ←→
Capacitor Connector [C]
R/W lead (ECU Terminal 8) [D]
BK/Y lead (ECU Terminal 35) [E]
BK/Y lead (ECU Terminal 36) [F]
Criteria: 0 Ω
If no continuity, check the connector or main harness, and
repair or replace them if necessary.
If the wiring is good, check the power supply voltage of
Be sure the battery is fully charged.
Connect the ECU connector.