JAC S2. Elctrical Wiring diagrams — part 10

Illumination System

Illumination System

136

XII、Rear Reflector Assembly

（I）Removal

1. Open rear tail door

2. Open engine cabin cover

3. Disconnect battery negative electrode Refer to “Disconnection and connection of battery electrode”

4. Remove rear side wall combination assembly Refer to “Rear side wall combination assembly”

5. Remove rear bumper assembly Refer to “rear bumper assembly”

6. Install rear reflector assembly

1). Remove 2 fixed bolts of rear reflector assembly;

2). Take down rear reflector assembly;

（II）Installation

1. Install rear reflector assembly

1). Place rear reflector assembly in installation position, and tighten 2 fixed bolts;

△Note Check whether rear reflector assembly is good before installing. Don’t damage rear reflector assembly when installing.

Check whether rear reflector assembly is installed in place after installing, and whether fitting clearance of
bumper is proper, if not, please re-install.

2. Install rear bumper assembly

3. Install rear side wall combination assembly

4. Close rear tail door

5. Connect battery negative electrode

6. Close engine cabin cover

Illumination System

Illumination System

137

XIII、Rear Reversing Light Assembly

（I）Removal

1. Open rear tail door

2. Open engine cabin cover

3. Disconnect battery negative electrode Refer to “Disconnection and connection of battery electrode”

4. Remove rear side wall combination assembly Refer to “Rear side wall combination assembly”

5. Remove rear bumper assembly Refer to “rear bumper assembly”
6. Remove rear reversing light assembly

1). Disconnect wiring harness connector of rear reversing light assembly;

2). Remove 3 fixed bolts of rear reversing light assembly;

3). Take down rear reversing light assembly;

（II）Installation

1. Install rear reversing light assembly

1). Place rear reversing light assembly into installation place, and tighten 3 fixed bolts;

2). Connect wiring harness connector of rear reversing light assembly;

△Note Check whether rear reversing light assembly is good before installing. Don’t damage rear reversing light assembly

when installing. Check whether rear reversing light assembly is installed in place after installing, and whether
fitting clearance of bumper is proper, if not, please re-install.

2. Install rear bumper assembly

3. Install rear side wall combination assembly

4. Close rear tail door

5. Connect battery negative electrode

6. Close engine cabin cover

Illumination System

Illumination System

138

XIV、Rear Fog Light Assembly

（I）Removal

1. Open rear tail door

2. Open engine cabin cover

3. Disconnect battery negative electrode Refer to “Disconnection and connection of battery electrode”

4. Remove rear side wall combination assembly Refer to “Rear side wall combination assembly”

5. Remove rear bumper assembly Refer to “rear bumper assembly”
6. Remove rear fog light assembly

1). Disconnect wiring harness connector of rear fog light assembly;

2). Remove 2 fixed bolts of rear fog light assembly;

3). Remove connection of rear fog light assembly and rear bumper, and take down rear fog light assembly;

（II）Installation

1. Install rear fog light assembly

1). Place rear fog light assembly into installation place, ensure it is connected to bumper in place, and tighten 2 fixed bolts;

2). Connect wiring harness connector of rear fog light assembly;

△Note Check whether rear fog light assembly is good before installing. Don’t damage rear fog light assembly when installing.

Check whether rear fog light assembly is installed in place after installing, and whether fitting clearance of
bumper is proper, if not, please re-install.

2. Install rear bumper assembly

3. Install rear side wall combination assembly

4. Close rear tail door

5. Connect battery negative electrode

6. Close engine cabin cover

Electrical Horn

Electrical Horn

139

Electrical Horn

I、Summary

（I）Structure Overview

Horn is installed in front module assembly in front of vehicle, located in left side of front module, and equipped with a

monophonic electrical horn.

Component Position

1. Horn assembly

（II）Operation Principle

Control mode of horn is controlling power supply terminal, and control actuation of horn relay by horn switch or BCM, and

then supply power to horn by relay, thus horn can work. Horn is always connecting to grounding.

Electrical Horn

Electrical Horn

140

II、Troubleshooting

（I）Troubleshooting List

1. Detect after-sale installed device that may infect system operation.

2. Detect easily connected or found system component, to detect whether it has apparent damage or may cause fault.

3. If horn not work, should check and maintain power supply or bad contact or open circuit of switch grounding circuit before
replacing horn.

4. When horn discontinuously works or pressing one side of steering wheel horn switch lose efficacy, it’s possible that horn

switch bad contact, and should regulating horn switch contact in steering wheel at this time.

No.

Fault phenomenon

Fault reason analysis

Solution method

Remark

1

Horn not work

Horn relay fault

Replace horn relay

Refer to horn
not work

Power supply fuse fault

Replace fuse

Horn contact fault

Regulate horn contact

Clock spring fault

Replace clock spring

Horn power supply circuit fault

Check related circuit

Horn grounding circuit fault

Check related circuit

Horn fault

Replace horn

Anti-theft warning

Horn switch

Clock spring

Horn relay

Left front horn

Electrical Horn

Electrical Horn

141

（II）Troubleshooting Flow Chart

Horn not work

Fault phenomenon:
electrical horn not work

Check state of horn fuse
EF06 in engine cabin

Press/loosen horn switch, measure resistance
between horn

switch

wiring

harness

connector M17-12 pin and grounding circuit
When pressing, resistance standard value:
less than 1 Ω
When loosening, resistance standard value:
10KΩ or more

Measure resistance of clock
spring
Standard resistance: less
than 1Ω

Measure resistance between horn
relay ER06/87 pin and horn wiring
harness connector E01-2 pin
Standard resistance: less than 1Ω

Measure resistance between horn
wiring harness connector E01-1
pin and vehicle body grounding
Standard resistance: less than 1Ω

Maintain horn grounding
circuit fault

Replace clock spring

Maintain

circuit

fault

between horn relay ER06/87
pin and horn wiring harness
connector E01-2 pin

Adjust horn switch contact
point

Check open circuit fault of
fuse circuit and replace fuse

Whether fuse is fused

Whether

accord

with standard value

Whether

accord

with standard value

Whether

accord

with standard value

Fault removed

Replace horn

Yes

Yes

Yes

No

No

No

No

Whether

accord

with standard value

Yes

No

Electrical Horn

Electrical Horn

142

III、High Pitch Horn Assembly

（I）Removal

1. Open engine cabin cover

2. Disconnect battery negative electrode Refer to “Disconnection and connection of battery electrode”

3. Remove front guard cover of engine Refer to “Front guard cover of engine”

4. Remove front wheel cover Refer to “Front wheel cover”

5. Remove upper cover plate of front bumper

6. Remove front bumper assembly

7. Remove high pitch horn assembly

1). Disconnect wiring harness connector ① of high pitch horn

assembly;

2). Remove fixed bolt ② of high pitch horn

assembly;

3). Take down high pitch horn assembly;

（II）Installation

1. Install high pitch horn assembly

1). Place high pitch horn assembly to installation position, and tighten fixed bolt ② of high pitch horn assembly;

2). Connect wiring harness connector ① of high pitch horn

assembly;

2. Install front bumper assembly

3. Install upper cover plate of front bumper

4. Install front wheel cover

5. Install front guard cover of engine

6. Connect to battery negative electrode

7. Close engine cabin cover

Power Supply on Vehicle

Power Supply on Vehicle

143

Power Supply on Vehicle

I、Summary

（I）Structure Overview

Power supply on vehicle is installed in front guard panel of auxiliary dashboard (lower part of central control dashboard),

and supply power by ACC.

Component Position

1. Power supply on vehicle

△ Note

Rated voltage of power supply on vehicle is 12V direct current, and can’t use any electrical device that exceeds

rated voltage and power.

II、Troubleshooting

（I）Troubleshooting List

1. Detect after-sale installed device that may infect system operation.

2. Detect easily connected or found system component, to detect whether it has apparent damage or may cause fault.

NO.

Fault phenomenon

Fault reason analysis

Solution method

Remark

1

Power

supply

on

vehicle not work

Power supply fuse fault

Replace fuse

Power supply and grounding circuit fault

Check charging system

Power supply on vehicle fault

Replace power supply on vehicle

Power Supply on Vehicle

Power Supply on Vehicle

144

III、Power supply on vehicle

（I）Removal

1. Open engine cabin cover

2. Disconnect battery negative electrode Refer to “Disconnection and connection of battery electrode”

3. Remove power supply on vehicle

1). Pry power supply on vehicle;

2). Disconnect wiring harness connector of power supply on vehicle;

3). Take down power supply on vehicle;

（II）Installation

1. Install power supply on vehicle

1). Connect wiring harness connector of power supply on vehicle;

2). Install power supply on vehicle to installation hole;

2. Connect battery negative electrode

3. Close engine cabin cover

Power Supply on Vehicle

Combination meter

145

Combination Meter

I、Summary

（I）Structure Overview

Combination meter is in dashboard of driver’s right ahead and steering column upper opening. Other parts of combination

meter, including installation parts and electrical connector is packaging inside dashboard behind combination meter frame.

Except analog meter and indicator, various warning or indicating and some diagnosis information is installed.

The vehicle combination meter apply to four type, and using planar structure. Two large indicator header, left is tachometer,

right is speedometer, fuel gauge and coolant temperature gauge is respectively in the right and left side of LCD display screen.

LCD display screen is display content including: clock, total mileage, mileage subtotal, door open and gear position etc..

Component Position

1. Combination meter

Power Supply on Vehicle

Combination meter

146

Combination meter picture

1. Tachometer 4. Coolant temperature gauge
2. Speedometer 5. Driver’s information display screen

3. Fuel gauge 6. Indicating light

7. Setting and regulating button

（II）Operation Principle

Tachometer

Meter receives CAN message value EngSpd transmitted by ECU, and transforms into engine speed value that using rpm as

a unit. Red zone range: 6200rpm ～ 8000rpm.

Engine speed and CAN signal compare list:

Engine speed （rpm）

CAN message value

Allowed error range （rpm）

1000

0x7D0

±60

2000

0xFA0

±100

3000

0x1770

±100

4000

0x1F40

±150

5000

0x2710

±150

6000

0x2EE0

±150

7000

0x36B0

±200

8000

0x3E80

±200

Power Supply on Vehicle

Combination meter

147

Speedometer

Meter receives CAN message value VehSpd speed signal value from ESP, and transforms into speed value that using km/h as
a unit. E=N*0.05625

Vehicle speed and CAN signal compare list:

Actual vehicle speed （km/h）

CAN message value

Vehicle speed indicating range（km/h）

20

0x164

20~23

60

0x42A

60~65

100

0x6F2

100~105

160

0xB1C

160~168

220

0xF47

220~229

Fuel gauge

Resistance signal from fuel sensor directly connect to connector pin of combination meter.

Meter indicating and resistance value compare list:

LCD screen display

Resistance /Ω

Meter resistance /Ω

E

200±5

195

1grid (Warning point)

172±5

172

2 grid

142±5

142

3 grid

117±4

117

4grid

89±4

89

5grid

70±4

70

6grid

58±3

58

7grid

40±3

40

F

25±3

28

Coolant temperature gauge

Coolant temperature gauge using block code indicating, signal source is CAN signal transferred by EMS, ID: 0x118;

Period: 10ms; Name: EngCoolanTpt, When receiving signal EngCoolanTptVd is 1, according to starting byte: 56, data length 8

bits, deviation value -48, reach N, E=N*0.75-48

LCD screen display

Meter rising sample

Meter dropping sample

Rising （℃）

CAN value

dropping （℃）

CAN value

C(0 grid )

Common difference ±3

≤ 49

0x81

1 grid

≥ 50

0x82

≤ 59

0x8E

2 grid

≥ 60

0x90

≤ 69

0x9C

3grid

≥ 70

0x9D

≤ 79

0xA9

4 grid

≥ 80

0xAA

≤ 109

0xD1

5-7 grid

≥ 110

0xD2

≤ 119

0xDE

8grid

≥ 120

0xE0

Common difference ±3

Power Supply on Vehicle

Combination meter

148

Combination meter function introduction

Warning symbol

No.

Name

Type

Symbol

Color

Control

method

Connect

to

Soft self-

inspection

Remark

1

Fuel warning

LED

Yellow

Resistance

signal

Ignition

√

Chip port

triode

amplifyin

g

2

Coolant temperature

warning

LED

Red

CAN signal

Ignition

√

3

EOBD

LED

Yellow

CAN signal

Ignition

4

Oil pressure

LED

Red

Direct (low

voltage)

Ignition

5

Parking brake

LED

Red

CAN signal

Ignition

Brake liquid fault

Direct (low

voltage)

Ignition

EBD fault

CAN signal

Ignition

√

6

Driver’s air bag

LED

Red

Direct (low

voltage)

Ignition

√

Power Supply on Vehicle

Combination meter

149

No.

Name

Type

Symbol

Color

Control

method

Connect

to

Soft self-

inspection

Remark

7

Engine fault

LED

Yellow

CAN signal

Ignition

8

ABS

LED

Yellow

CAN signal

Ignition

9

Battery charging

LED

Red

Direct (low

voltage)

Ignition

Output

port

connect

to diode

to protect

10

Right turning

LED

True

green

CAN signal

Meter

groundin

g

11

Left turning

LED

True

green

CAN signal

Meter

groundin

g

12

Front fog light

LED

Green

CAN signal

Meter

groundin

g

13

Rear fog light

LED

Yellow

CAN signal

Meter

groundin

g

14

Engine anti-theft

LED

Yellow

Direct (Low

voltage)

Battery

Also can

work after

closing

ignition

switch

15

Front headlight

high beam

LED

Blue

CAN signal

Meter

groundin

g

16

Front headlight low

beam

LED

Green

CAN signal

Meter

groundin

g

Power Supply on Vehicle

Combination meter

150

No.

Name

Type

Symbol

Color

Control

method

Connect

to

Soft self-

inspection

Remark

17

Safety belt

LED

Red

Direct (Low

voltage)

Ignition

18

Pre-cruise

LED

White

CAN signal

Ignition

19

Cruise

LED

Green

CAN signal

Ignition

20

Front passenger’s

safety belt

LED

Red

Seat sensor:
Load＜150Ω,
unload＞
8kΩ ; low
voltage

Ignition

If equipped

with front

passenger’

s safety

belt

warning

21

Tire pressure

warning

LED

Yellow

CAN signal

Ignition

If equipped

with tire
pressure

monitoring

22

TPMS failure

LED

Yellow

CAN signal

Ignition

23

EPS

LED

Red

CAN signal

Ignition

24

Deflection angle

signal not
calibrated

LED

Yellow

CAN signal

Ignition

25

Position light

LED

Green

CAN signal

Ignition

Operation Instruction:

Speedometer and Subtotal mileage

Speedometer displays vehicle speed by km/h. Odometer displays driven mileage number of vehicle.

Total mileage

Power Supply on Vehicle

Combination meter

151

Total mileage gauge can display driven mileage number of vehicle so far.

Tachometer

Tachometer displays engine speed, unit is r/min.

Safety belt prompting light

Always twinkle until driver fastening safety belt. If driver has already fastened safety belt, the light will not be on.

Safety belt prompting sound

Not fasten safety belt and vehicle speed is more than 20km/h, it will send out warning sound of 1Hz frequency to prompt

driver to fasten safety belt.

Air bag ready indicating light

There is air bag indicating light in dashboard, the light display air bag symbol. System will check whether there is fault in air

bag system. And can learn whether there is electrical fault in air bag system through this light. System inspection includes air bag

sensor, air bag module, circuit and diagnosis module. When vehicle starting, the light is on for several seconds, and then off, which

indicating air bag system is ready. After starting vehicle, if air bag ready indicating light is always on or on when driving, it

indicating air bag system is abnormal.

Charging system indicating light

As a check item, when ignition switch is connected and engine is not starting, charging system indicating light will be on for

a short time, which indicating its function is normal. After engine starting, the indicating light will be off. If indicating light is not

off or on when driving, it indicates that there is electrical fault in charging system. If driving vehicle when the light is on, it will

exhaust battery power. If have to drive for a short distance when the light is on, must close all accessory, such as radio and A/C.

ABS indicating light

When turning ignition switch to on, the warning light will be continuously on for several seconds, which is normal

phenomenon. If warning light is always not off, turn ignition switch to LOCK. If warning light is on, stop vehicle as soon

as possible and close ignition switch, and then restart engine to reset system. If warning light is still not off or on when

driving, maintain vehicle. If convention braking system warning light is not on, vehicle can brake, but can ’t use ABS. If

convention braking system warning light is on, there is no ABS, and there is fault in convention braking system. When

turning ignition switch to on, ABS warning light will be on for a short time, which is normal phenomenon. If warning light

is not on at this time, should remove fault to let it send warning when fault appearing.

Engine coolant temperature gauge

When turning ignition switch to on, coolant temperature gauge displays engine coolant temperature.

Oil pressure warning light

If engine oil pressure is too low, the warning light will be always on after engine starting or on when driving, which indicating

engine oil is not enough. Engine oil level may be too low, and maybe there is other oil fault. Oil warning light may be on in the

other three conditions:

1、As a check item, when turning ignition switch to on and engine not starting, the warning light will be on, which indicating

its function is normal. After engine starting, the warning light will be off. If turning ignition switch to on and the light is not on,

there is fault in fuse or light bulb.

2、If engine idling running when at red light, warning light may twinkle and then be off. If emergency brake, the light will be

on for a short time, which is normal phenomenon.

△ Note

Don’t continue to drive when oil pressure is too low.

△ Note

If engine oil lack of proper maintenance, it may damage engine.

High beam indicating light

Every time high beam light is on, the indicating light will be on.

Vehicle door not close indicating light

When vehicle door is not closed, screen door open indicating light will be always on until all vehicle doors are closed and

totally locked.

Fuel gauge

When turn ignition switch to on, fuel gauge displays remainder fuel in fuel tank. When fuel tank is almost empty, fuel level is

too low and warning light will be on. There is still little fuel at this time, but should fill fuel as soon as possible.