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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
√
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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
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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
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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.
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