FUEL INJECTION CONTROL SYSTEM INSPECTION
EF & EC-638prose procedureFuel pump fuse location differs between L.H.D. and R.H.D. models (SEF480L).
Releasing Fuel Pressure
WARNING
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
Releasing Fuel Pressure (with CONSULT)
- 1Turn ignition switch "ON".
SEF823K - 2Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT.
- 3Start engine.
- 4After engine stalls, crank it two or three times to release all fuel pressure.
- 5Turn ignition switch off.
Releasing Fuel Pressure (without CONSULT)
- 1Remove fuse for fuel pump.
SEF480L - 2Start engine.
- 3After engine stalls, crank it two or three times to release all fuel pressure.
- 4Turn ignition switch off and re-insert fuel pump fuse.
Fuel Pressure Check
IMPORTANT
When reconnecting fuel line, always use new clamps.
Make sure that clamp screw does not contact adjacent parts.
Use a torque driver to tighten clamps.
Use Pressure Gauge to check fuel pressure.
Do not perform fuel pressure check while fuel pressure regulator control system is operating; otherwise, fuel pressure gauge might indicate incorrect readings.
Fuel Pressure Check
- 1Release fuel pressure to zero.
- 2Disconnect fuel hose between fuel filter and fuel tube (engine side).
- 3Install pressure gauge between fuel filter and fuel tube.
- 4Start engine and check for fuel leakage.