Engine and Emission Control System Description - Fail-safe System (Cont'd)
EF & EC-24prose procedureFail-safe System (Cont'd)
ENGINE TEMPERATURE SENSOR MALFUNCTION
NOTE
When engine temperature sensor output voltage is below or above the specified value, water temperature is fixed at the preset value as follows:
Operation
Just as ignition switch is turned ON or Start
Engine temperature decided20deg.C (68deg.F)
More than 6 minutes after ignition ON or Start
Engine temperature decided80deg.C (176deg.F)
Except as shown above
Engine temperature decided20 - 80deg.C (68 - 176deg.F) (Depends on the time)
THROTTLE SENSOR MALFUNCTION
Description
NOTE
When the output signal of throttle sensor is abnormal the E.C.U. judges it as a malfunctioning of throttle sensor.
The E.C.U. does not use the throttle sensor signal, but judges the idle position by the amount of fuel injected and the engine rpm.
Operation
When engine is idling
Driving conditionNormal
When accelerating
Driving conditionPoor acceleration