Fail Safe Chart
FAIL-SAFE SYSTEMAir Flow Meter Malfunctioning
When air flow meter output voltage is lower or higher than the preset value while the engine is running, the fuel injection pulse duration is fixed at the preset value (when engine speed is less than approx. 2,000 rpm) or the fuel is not injected (when engine speed is more than approx. 2,000 rpm).
Water Temperature Sensor Malfunctioning
When water temperature sensor output voltage is lower or higher than the specified value, water temperature is fixed at the preset value as shown in the image.