DV11
Operation and Maintenance
158
Engine Diagnostic
Printed in Mar. 2005 PS-MMA0608-E1A
3.8. Operating condition of the ECU
3.8.1. Engine starting
z Setting of a basic temperature for decision of the fuel quantity.
Set to a basic temperature the minimum value between coolant temperature and
fuel temperature and intake air temperature.
z Engine speed sensor signal measurement
- Using by crankshaft speed sensor
- Using by camshaft speed sensor
- Supply to the engine after decided properly fuel quantity to starting the engine.
3.8.2. Vehicle running
z Essential dater for the running of the vehicle.
- Accelerator pedal position signal
- Engine speed
- Vehicle speed
3.8.3. Engine idle adjusting
z Adjusting of engine’s idle speed by the necessity of the driver.
z Method of the adjusting is possible by using the cruise control switch.
z Preparing condition for the adjusting of the idle speed
- Cruise control switch : no trouble
- Pedal brake : no trouble
- Vehicle speed : stop
- Coolant temperature : more than limit
- Engine speed : less than limited scope of the speed
z Adjusting method of the idle speed
- When the brake pedal is depressed.
- After the cruise [RESUME] switch is depressed for one minute.
Engine speed increase : cruise control [SET/INC] switch is depressed.
Engine speed decrease: cruise control [SET/DEC] switch is depressed.
z Storage of the variable of the idle speed
- Cruise control [RESUME] switch is depressed after variation of the speed.
- When the switch [RESUME] is stored at the condition of depressing, the last
stored value keep constantly after start the engine.
- When the engine is stopped at the condition of doing not depressed [RESUME]
switch, return to the first value.
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