fuel GEELY CK 2008 Owner's Guide

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

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.

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)

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

1855. FUEL GAUGE MALFUNCTION
CIRCUIT DIAGRAM
(a) Inspect the combination meter assembly
1Inspect resistance
yRemove the combination meter assembly and disconnect connectors
yInspect continuity between terminals
Standard:
Result and solution:
NormalReplace the combination meter assembly
If abnormal inspect the fuel level sensor
2Inspect the fuel level sensor
yRemove the fuel level sensor
yAdjust the height of the fuel level sensor and measure its resistance.Te ster connec tionC ondit ionSta ndard c onditionE110±6Ω
1/2 32.5±3Ω
F3±2Ω A12 - groundFuel Level SensorCombined Meter Assembly
Fuel Signal

186Standard:
Result and solution:
Normal:Repair or replace the harness and connector
If abnormal replace the fuel level sensor
6. THE OTHER INDICATORS
Short the ports of the other indicators respectively to the ground or power source in accordance with the
Circuit Diagram, the indicators will light correspondingly. If it dose not light, replace the combination meter.
If it lights, repair or replace the harness or connector.
7. ODOMETER MALFUNCTION
Inspect first supposing the problem to be from the speedometer. If the speedometer is normal, the combina-
tion meter needs replacing when the odometer is abnormal.Condition Standa rd condition
E 110±6Ω
1/2 32.5±3Ω
F3±2Ω

190Analog Meter
4. INSPECT FUEL LEVEL GAUGE
(1) Inspect resistance
When the fuel level gauge indicates no fuel, inspect the resistance between terminal A-12 and B-7 on the
combination meter connector.
Standard:
NOTICE:
Connector should be disconnected when measured.
5. INSPECT WATER TEMPERATURE GAUGE
(1) Inspect resistance
When the water temperature is indicated in the red area, inspect the resistance between terminal B-5 and
B-7 on the combination meter connector.Ta c home te r (r/min) handy tac home te r (r/min)
800 740—860
1000 900—1100
2000 1850—2150
3000 2800—3200
4000 3800—4200
5000 4800—5200
6000 5750—6250Sta ndard indic a tion Re sista nc e (Ω)
E 104—116
Warning point 90—100
1/2F 29—35
F１
—５

213IV. HEADLAMP BEAM ADJUSTMENTLOW BEAM
1. Adjust the condition of the vehicle.
yMake sure the body around the headlamp is not deformed
yTire inflation pressure is the specified value
yPark the no-load vehicle on a level spot
ySit on the driver's seat and be ready for driving (with a full fuel tank)
yPut the vehicle in front of a wall, and let it be perpendicular to the wall
yEnsure the distance from the headlamps to the wall is 10 m
2. Inspect the headlamp beam
ySet up a screen as shown in the illustration, to adjust the headlamp aim
yCover the other lamps while a certain headlamp is adjusted.
yStart the engine
yTurn the headlamp low beam ON
yThen turn the adjusting screws controlling the beams. Make the main beam (the brightest point) at
the specified height, that is, the corner point of the "cut-off" line is located in the center of the
shaded part, as shown in the illustration.Low Beam LayDim and Bright
Cut Line AngleDistance from the central point of
the headlamp beam to the groundLow
BeamPosition of the Vehicle

318Chapter 2 Inside & outside Trim and AccessorySection 1 Configuration Index(I) Outside Trim And Front Accessory1 Door handle 6 Windshield
Front fender
(See the engine hood adjustment)
Front bumper
(See front bumper
r em o v a l/ in s t allat io n )
The engine hood
(See the engine hood
r em o v a l/ in s t a llat io n )
Elec tric outs ide rear view mirror
(See elec tric outs ide rear view
m ir r o r r em o v a l/ in s t allat io n ) 5 Co w l v e n t g r ille 1 0Front mudguard skirt
4 9 Fuel fill port cap 2 Ra d ia t o r g r ill a s s em b ly 7
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