fuel GEELY CK 2008 Owner's Guide
[x] Cancel search | Manufacturer: GEELY, Model Year: 2008, Model line: CK, Model: GEELY CK 2008Pages: 392, PDF Size: 38.86 MB
Page 89 of 392

82The control over the ignition advance angle is generally open loop control. But this open loop control is
different from the general open loop control, ECU test the knock signal with the knock sensor while control-
ling and outputting ignition advance angle orders in way of open loop. Once the knock occurs, it is converted
into closed loop control, and its feedback signal is knock sensor signal. Therefore, basically, it is also a closed
loop control.Section 2 System Component and Working PrincipleECU receives information from the sensors and sends control signals to actuators after processing and
analyzing these information. It plays a role of nerve center in the electronic control system.
ECU hardware consists of input level, micro-computer and output level (see figure 153).
Figure 153Ignition advance angle control Starting condition ¡ª fixed ignition advance angle
Running conditionSpecial controladvance angle basic value - determined by MAPadvance angle correctioninstantaneous correction
stable idle correction
air fuel ratio feedback correction
engine overheat correction
knock control
maximum advance/delayed angle controlother correction
Page 91 of 392

843. Output Level
ECU output level is designed to send control signal to the actuators of the electronic control system based on
the orders of the microprocessor in the micro-controller. The microprocessor control the output level by
controlling the occurrence position of the pulse, its length and duty ratio.
(1) Injection output level
The microprocessor controls the pulse length of the injection output level by making sure whether to
trigger to circuit or not in the injection output level.
(2) Ignition input level
The ignition output level is designed to amplify the ignition signal from the microprocessor into the primary
current of the ignition coil.
(3) Electric fuel pump output level
ECU microcontroller control the pump relay through electric fuel pump output level, and then control the
on and off of the electric fuel pump based on the current operating conditions.
(4) Other output levels
Control the output levels of the idle control valve, carbon canister solenoid valve, malfunction indicator
lamp. MR479Q, MR479QA, MR481QA engine idle control are closed loop control system, their injection
and ignition control are also closed loop control system.
Page 178 of 392

171Chapter 3 Combination Meter SystemSection 1 Circuit Diagram of Combination Meter and Location of
Multi-pin Plug-in TerminalI. CIRCUIT DIAGRAM OF CONBINATION METERSpeed Signal
Ground The Sensor
Revolution SignalWater Temperature SignaFuel Level GaugeTachometer
SpeedometerWater
Temperature Gauge
Feul Level Gauge
OdometerHigh Beam Lamp
Rear Defrost Lamp
Rear Defog Lamp
Backlight
Water Temperature WarningPower Steering
Fuel WarningCharge
Brake Fluid
Oil Pressure
Engine Malfunction
Driver's seat belt
Park Brake
SRS(main)
SRS(sub)
Page 180 of 392

1732. DEFINITION OF MULTIPIN PLUG-IN TERMINALDefinition of Terminal Color of Harness
1Empty
2EPS VG
3Empty
4Empty
5Empty
6Empty
7Empty
8 Combination switch (Position lamp P
9 Speed sensor groun B
10 Speed sensor power sourc RY
11 Speed sensor signal outpu YR
12 Fuel senso B
13 Alte rna tor WR
14 Brake fluid level switc GR
15 Oil pressure switc YG
16 Re a r de frost YB
1 Rear fog lamp Gr
2 Engine ma lfunc tion GY
3 S e a t be lt s w it c h R
4 P owe r sourc e Y
5 Engine coolant temperature senso YW
6 Park switch G
7 Power source groun B
8 Power source groun B
9ABS R
10 SRS (Ma in) RY
11 Engine re volution signa l BBl
12 Live wire (Fire wire) WG
13 High be am la mp + RB
14 Low bea m - RW
15 SRS (Sub) RG
16 Empty Terminal No.
A
B