FI system wiring diagram

Terminal alignment of ecm coupler

Self-diagnosis function
Component locationPrecautions
Precautions for engine cooling system
You can be injured by boiling fluid or steam if you open the
radiator cap when the engine is hot.
After the engine cools, wrap a thick cloth around cap and carefully
remove the cap by turning it a
quarter turn to allow pr ...
Oil pressure regulator / oil strainer
inspection
Refer to “oil pan / oil pressure regulator / oil strainer removal and
installation” .
Oil pressure regulator
Inspect the operation of the oil pressure regulator by
pushing the piston with a proper bar.
If the piston does not operate smoothly, replace the oil
pressure regulator with a new on ...
Fuel pump inspection
Turn the ignition switch on and check that the fuel pump
operates for a few seconds.
If the fuel pump motor does not make operating sound, inspect the fuel pump
circuit connections or inspect the fuel pump relay and to sensor. Refer to “fuel
pump relay inspection” and “dtc “c23” (p1651 ...