Correction of idle speed depending on battery voltage and electrical energy balance
The engine idle speed correction compensates for the voltage drop when the power consumer is switched on if the battery is weakly charged. The correction starts when the voltage drops below 12 V. As a result of the correction, the engine speed can be increased to no more than 1500 min⁻¹.
Connection between the power steering pressure relay and the injection system ECU
The injection system ECU receives information from the power steering pressure switch and can increase the idle speed to compensate for energy consumption.
Idle speed is reduced to 720 min⁻¹ if the vehicle speed is below 5 km/h.
Correction of idle speed in case of faulty accelerator pedal position sensor
If there is no signal from both conductive tracks of the accelerator pedal position sensor, the engine speed is increased to approximately 1200 min⁻¹.
Correction of idle speed in case of malfunction of the throttle valve unit with servo drive
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If there is no signal from both conductive tracks of the throttle position sensor, the throttle unit switches to the mechanical throttle opening limitation mode. In this case, the engine runs at 900-1400 rpm.
| Coolant temperature,°C | -30° | 20° | 35° | 75° | 100° | 120° |
| Idle speed, min⁻¹ | 900 | 830 | 780 | 650 | 650 | 500 |