Chery automobile Service Manual page 115

- Engine coolant temperature
- Air conditioning operation
- Signal from oxygen sensor
- Knock sensor for the accelerator meter on top of the engine crankshaft housing
The air intake efficiency is obtained by calculating through the processing of absolute
pressure, air intake temperature, engine speed, throttle valve position and other signals, and
help to determine the air intake quantity of the cylinder. The inbuilt power supply module in
the ECU is controlling the following functions:
- To control the injected fuel quantity through the control of opening timing of the fuel
injector
- Idling speed step motor
- Ignition coils of the 4 high voltage outputs
- Check valve for recirculation the gaseous fuel on top of the air intake manifold (carbon
canister)
- Temporary turnoff of the air condition compressor
- Dual speed cooling fan for the engine
- Overheating alarm light in the coolant of the engine
- Malfunction alarm light
Other than these major functions, ECU also controls:
- All the self-diagnostic strategy related to input sensors and output actuators
- Wrong signals restoration strategy works on basically effective input signals
G-6