Chery A15. Manual - part 161

 

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Chery A15. Manual - part 161

 

 

  Chery A15 Maintenance Manual 

Combination instrument component parts and functions: 

Component Part 

Function 

Speedometer 

Speedometer pointer moves as per signals sent by speed 
sensor to indicate running speed of vehicle 

Tachometer 

Tachometer pointer moves according to signals sent by 
ignitor to indicate engine speed 

Water temperature 

gauge 

Water temperature gauge pointer moves according to 
signals sent by sensor to indicate temperature of engine 
coolant 

Fuel gauge 

Fuel gauge pointer moves as per signals sent by sensor to 
indicate fuel state in fuel tank 

Odometer 

Odometer calculates the total running distance of vehicle 
according to the pulse signals sent by speed sensor, and 
may shift among short ranges   

Dual short-range 

odometer 

D

ual short-range odometer calculates running distance of 

vehicle according to pulse signal sent by speed sensor, 
and may be reset with a switch 

Power supply 

module 

The voltage regulator circuit installed in power supply 
module provides power to meters and lights through fuse 
S21 10A. 

Combination 

instrument 

Circuit board 

Includes circuits of all meters, gauges and lights and drive 
circuits of engine oil warning, odometer and short-range 
odometer. 

Speed sensor 

Installed in transmission and send pulse signal to 
combination instrument according to output shaft rotation 
rate 

Water temperature sensor 

Converts engine coolant temperature into ohmic value 
and sends to combination instrument in form of signal 

Fuel sensor 

Converts fuel level in fuel tank into ohmic value and 
sends to combination instrument in form of signal 

Fuel level warning switch 

C

onducts switch in fuel gauge in case fuel level falls 

lower than set value to turn on warning light 

Low engine oil pressure warning 

switch 

Fixed on engine body and conducts to turn on warning 
light when engine oil pressure drops 

Engine oil level warning switch 

Installed in engine crankcase oil tray and turns on 
warning light when engine oil level falls 

Brake fluid level warning switch 

Installed in oil tank of brake main pump and turns on 
warning light when brake fluid level falls 

Brake switch 

Located on brake pedal bracket and conducted when the 
pedal is stepped down to turn on warning light 

Door control light switch 

Conducted when door is open to turn on warning light 

Warning light 

Transmits current to warning lights or grounds them to 
turn on warning lights when abnormal vehicle conditions 
are detected 

Indicator light 

Transmits current to warning lights or grounds them to 
turn on indicator lights or indicate vehicle conditions for 
the driver 

  Chery A15 Maintenance Manual 

Section Two: Working Principle of Instrument System 

 

Circuit diagram of instrument system: 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ABS 电脑 ABS 

computer 

控制单元

 Control 

unit 

左转向灯

 

Left turn light 

多功能显示器

 Multifunction 

display 

右转向灯

 

Right turn light 

ABS 报警灯 

ABS warning light 

变速箱

 Gearbox 

发电机充电报警灯

 

Engine charge warning light 

诊断

 Diagnoser 

手制动报警灯

 

Hand brake warning light 

气囊

 Airbag 

发动机自检指示灯

 

Engine self-checking indicator light 

安全带

 Safety 

belt 

油压报警灯

 

Oil pressure warning light 

手刹开关

/制动注液面 

Pointer brake switch/brake fluid 

level 

发动机超温报警灯

 

Engine overheating warning light 

ECU 转速信号 

ECU rotation rate signal 

仪表板照明灯

 Dashboard 

illuminator 

车速转向器

 Speed 

converter 

近光灯

/位置报警灯

Low beam/position warning light 

发动机

 Engine 

远光报警灯

 

High beam warning light 

门开关

 Door 

switch 

燃油报警灯

 

Fuel warning light 

发动机

ECU Engine 

ECU 

数字钟

 Digital 

clock 

燃油传感器

 Fuel 

sensor 

单孔插件

 

Single hole plug-in 

ECU 水温信号 

ECU water temperature signal 

 Brown 

油压开关

 

Oil pressure switch 

 Gray 

灯光开关

 Light 

switch 

 Black 

灯光继电器

 Light 

relay 

 Red 

多路转换器

 Multiplexer 

 Purple 

稳压器

 Voltage 

stabilizer  绿 Green 

冷却液温度传感器

 

Coolant temperature sensor 

 Yellow 

RPM 传感器 RPM 

sensor 

 White 

预测定液位比较计

 

Pre-measured level comparer 

 Blue 

  Chery A15 Maintenance Manual 

 

Combination instrument is connected with meter wire harness by a 28-hole plug. 

 

 

 

 

28-hole plug of combination instrument wire harness 

Function of each plug hole is listed in the table below: 

Plug Hole 

Function 

Plug Hole 

Function 

1 Empty 

pin 

15 Diagnoser 

To water tank level warning switch

16 

To D+ terminal of generator 

Terminal 31 (earthing) 

17 

Airbag warning signal 

Hall sensor speed signal TX1 

18 

Door light 

Terminal 31 

19 

Safety belt warning light 

 

20 

Engine fault warning light 

   

21 

To fuel gauge sensor 

 

22 

Left turn signal light 

Engine oil pressure warning switch 

(30kpa) 

23 

Engine computer water temperature 

signal 

10 

Engine computer A20RPM 

24 

Right turn signal light 

11 

Terminal 30, power supply of clock 

and MFD 

25 

Feeder ear of high beam indicator 

light 

12 

Terminal 58b, dashboard lighting 

power supply 

26 

Brake fluid level warning switch 

Hand brake indicator light switch 

13 

Terminal 15 

27 

Speedometer sensor 

14 

ABS warning light 

28 

Night light 

 

1. Speedometer 

Chery A15 is equipped with cross coil speedometer with an additional digital 

speedometer to indicate running speed of vehicle and total mileage run. Speed 

measuring part adopts magnetic structure, and mileage recording part is controlled by 

  Chery A15 Maintenance Manual 

multifunction LCD. 

Figure: Speedometer (Meter-2) 

 

 

 

 

 

 

 

Speedometer (Meter-2) 

The pointer shall point to scale mark zero when speedometer is not working. When 

the vehicle is running, the driving gear in transmission traverses lines of magnetic 

force of the permanent magnet in speed sensor to make Hall speed sensor produce 

pulse signals to be sent to cross coil speedometer to move the pointer, meanwhile sent 

to multifunction LCD to record mileage. 

 

2. Water Temperature Gauge 

Water temperature gauge: 

Chery A15 adopts cross coil water temperature gauge with pointer. The left part of the 

meter (Meter-3) is water temperature gauge, as the figure shows. 

 

Water Temperature Gauge (Meter-3) 

Cross coil meter is an electromagnetic device, in which coils are reeled outside the 

magnetic spindle in four directions, with the angle formed by two adjacent coils being 

 

 

 

 

 

 

 

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