In this same condition, the coolant, air temperature and stepper LED's should be off. If either
the coolant or air temperature lights are on, check the wiring to the respective sensor. If the wiring
is OK, replace the sensor.
Now the stepper motor LED's. If the 'HI' light is on, check for open circuit. If 'LO' is on check for
short circuit. If both conditions are OK, the stepper motor is faulty and should be replaced.
The next test is to depress the throttle pedal; the throttle LED should go out. If it stays on,
check the throttle switch for a short circuit.
Now test the fuel shut-off valve. Select 'ON' on the solenoid switch and you should hear a click from
the valve. If you do not, check the wiring first and if this is OK replace the valve.
Finally, if all these tests are OK, it is likely the fault is in the ECU. Turn off the ignition and
disconnect the Fast check. Gently squeeze together the ECU harness terminals with pointed nose
pliers,. then reconnect and retest. Renew the ECU if the fault persists. That completes the Fast
check fuel management tests.