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Items N125
Service manual of electrical s
y
stem
Number: W5000-NAM-PV-DQ-G9-15
Version:1.0
edit:
Proofread
:
check:
standardi
zation:
countersig
n:
permit:
Anhui Jianghuai Automobile Co., Ltd.
Year month date
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N125 Combination instrument
Function Description
Component Diagram of Combination Instrument
Combination instrument indicates following functions:
1.Speedometer: Pointer of speed meter rotates upon frequency signal from speed sensor to indicate speed of vehicle. It is
considered as 0 when speed is less than 2Km/h
2. Tachometer: Pointer of speedometer moves upon revolution speed signal from engine to indicate rpm of engine.
3. Water-thermometer: Pointer of water-thermometer rotates upon Resistance signal from water temperature sensor of
engine to indicate temperature of engine coolant.
4. Fuel Gauge: Pointer of fuel gauge rotates upon resistan ce value signal from fuel sensor to indicate the remaining oil
of fuel tank.
5. LCD display: Mileage accrual, subtotal mileage.
6. Relevant parameters of combination instrument
Items Descriptions
Dial
Color Black
Table licensing technology 3 D
Scale line/digital White, find more details in the effect design
Red Zone red, find more details in the effect design
back lighting
Dial white (with blue halo)
Pointer Red
LCD White on Black
Speedometer
The chipset type stepping motor great force VID 2905
signal source (ON) Vehicle Speed Sensor
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Speed units Km/h
The Maximum Scale (Km/h) 160
The Minimum Scale (Km/h) 10
KM/H Symbol back lighting
tachometer
The chipset type Stepping motor
signal source (ON)
Generator
The maximum speed scale 6000
minimum scale 500
Red Zone 40006000
X1000R/min Symbol back lighting
Water
temperature
gauge
The chipset type Stepping motor
signal source (ON)
water temperature sensor
Scope 50 °C ~120 °C (C ~H)
Red Zone 115 °C ~120 °C
Remarks 85 °C ~105 °C remain at 1/2 scale
Fuel gauge
The chipset type Stepping motor
signal source (ON)
Fuel sensor
Scope EF
Red Zone E ~ 1/8
LCD display:
Total number of miles (ON) 0~999999 Km
Mileage subtotal (ON) 0~999.9 Km
Fuel Consumption Information (ON) Average and instantaneous fuel consumption L/100 Km
Alarm
indicator
symbols in dial
Left Turn (B + or
ON)
high voltage Green
right turn (B + or
ON)
high voltage Green
High Beam (ON) low voltage Blue
Rear fog lamp(ON)
high voltage
Yellow
Front fog lamp(ON) high voltage Green
Open door (B + or
ON)
low voltage Red
charge and discharge
instructions (ON)
low voltage
Need to provide 200
mA excitation
Red
ABS failure (ON)
High or
suspended
In reserve Yellow
Driver’s safety
belt(ON)
low voltage Red
Engine blow down
system failure (ON)
low voltage Reserved Yellow
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Airbag failure
indicator(ON)
low voltage Reserved red
Water temperature
high/low coolant
(ON)
Resistance
values
instrument drive red
Low fuel level (ON)
Resistance
values
instrument drive Yellow
Oil pressure alarm
(ON)
low voltage red
engine failure
indication (ON)
low voltage Reserved Yellow EPC
Brake Failure (B + or
ON) low voltage
The hand brake, the
brake fluid level is low,
the Brake Pressure ia
Low
red
Engine anti-theft
indicator
(B + or ON)
low voltage Reserved Yellow
Daytime running
lights (ON)
high voltage Green
Cruise Indicator
(ON)
high voltage Reserved Green
preheat Indicator
(ON)
low voltage Yellow
Water separator
(ON)
high voltage red
Combination meter terminal description
Combination meter terminal description (currently N125 only uses a connector: AMP 966658 - 1 (green)
AMP 966658-1(green)CON_A
A1 oil and water separation A17 oil pressure-
A2 empty A18 door open-
A3 empty A19 ignition electric+
A4 right turn + A20 rotation signal frequency
A5 left turn + A21 speed signal frequency
A6 charge-discharge A22 telecommunication
A7 small lamp+ A23 speed output frequency
A8 empty A24 fuel ground-
A9 empty A25 fuel signal resistance of value
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A10 empty A26 water temperature signal resistance value
A11 rear fog lamp+ A27 safety belt
A12 high beam lamp- A28 braking-
A13 front fog lamp+ A29 parking braking-
A14 preheat A30 empty
A15 empty A31 battery +
A16 DRL A32 battery ground-
Speedometer and odometer
Test:
Adjust tire pressure to the specified value.
Put vehicle on speed test stand.
Make sure that parking brake functions properly.
Fix vehicle onto to prevent lateral moving.
Fasten rear end of vehicle with chain or steel cable to prevent longitudinal moving of vehicle.
Check if it's in the correct indication range of speedometer.
Speedometer Indication Range is showed in the below table:
Caution:
Never operate clutch or change speed suddenly during test.
Confirm the speed of change:
Tachometer
Inspection of tachometer
Compare readings in tachometer above mentioned and that onboard with different engine speed. Make sure that difference
Actual speed
Speed instruction range
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is within the standard limitation.
Tachometer Indication Range is showed in the below table:
Water temperature gauge
1. Water Temperature table Description
Lower than C lower temperature zone
Engine temperature indication will be in this z one during warming up of engine. In this temperature rang e, the engine
should not run in high speed or under high load.
Between C and red zone It shows temperature range in normal operation with normal rpm.
The pointer will go beyond this zone when engine runs with heavy duty in hot environment. The vehicle can operate
normally before coolant temperature indicator lit up. In case this indicator is lit up, stop engine and check cooling system.
Above the Red Zone - hot zone
A pointer in this red zone indicates overheated engine. Stop vehicle safely and turn off engine immediately. Check for
cause of overheating after engine cools down.
Descriptions:
The auxiliary headlight in front cool air inlet under front bumper effects cooling air circulation, which results in
poor cooling effect of engine. If engine runs with heavy duty under high ambient temperature, it will be easily
overheated. Front spoiler also directs cooling air. The engine will be overheating if it is damaged or broken resulting
from compact.
2. Inspection of Water Temperature Gauge
Measuring the information sent from water temperature sensor.
Speedometer Indication Range and Resistance values Comparing Table
Allowed mistake range
Actual speed
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Fuel gauge
Floater moves along with change of fuel level, corresponding to the sliding contact with pole of floater to change
resistance of thick-film resistor. Minimum resistance of thick-film resistor corresponds when fuel tank is full, the pointer of
fuel gauge indicates maximum fuel quantity in position F. Otherwise, in case fuel tank emptied, the maximum resistance
results in that the pointer of fuel gauge indicates minimum fuel quantity in position E.
1. Inspection methods
1) Inspect fuel gauge operation
There is about 10 L fuel remaining in fuel tank when pointer is in position E. The pointer will go out of position F when
vehicle runs a while after the fuel tank is topped up. Fill quantity may be less than capacity on label because of fuel remaining
when refill the fuel tank.
2.Simply procedure for fuel gauge inspection
Disconnect the connector of Fuel
Use a special tool to connect test lights
(12 V - 3.4 V) to connector of wiring.
Turn on the test lights when ignition
switch is ON position.
Repair electrical wiring.
Replace Fuel gauge sensor
FUEL GAUGE pointer swings.
Change fuel gauge.
Norm
Abnormal
Repair electrical wiring
Abnormal
Normal
Scale
Resistance
(
Ω
)
Chec
k
p
oin
t
Actual tem
p
erature
(
)
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3. Inspection of fuel gauge sensor component
Remove sensor component from fuel tank before inspection.
4. Resistance of fuel gauge sensors component
1) With floater of fuel gauge sensor assembly at position F (highest) and E (lowest), verify if resistance values between
terminals of sensors is within the standard values.
Comparing Table of Sensor Resistance and Reading on Fuel Gauge is below:
2) Check if resistance values varies smoothly with floater moving between position F and E.
Combination instrument replacement
1) Removal procedure:
Remove negative (-) of battery.
Adjust the steering wheel to the bottom position
Remove 2 screws in the instrument panel cover
pry off the Instrument panel cover from the IP Board completely
Take instrument panel cover away to expose the screws on instrument cluster
Remove screws on combination instrument.
Unplug connectors and remove combination instrument assembly.
2) Installation Steps: installation is the reverse order of
Scale Resistance(Ω)
Check point(Ω
Warning point
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removal
Fault diagnosis
Fault Diagnostic Table of Combination Instrument
No. Major Fault Cause elimination methods
1
Malfunction of the
whole combination
instrument
(1) circuit is not
connected
(2) Damaged wiring
(1) Check battery and ground, if battery is
12V and connected.
(2) Exchange instruments
2
Indicator light
and/or spotlight
can’t be lit up
(1) circuit is not
connected
(2) (2) False
controlling signal
(3) Damaged wiring
(1) Check for connectivity of relevant
circuit and connector
(2) Check if there is level signal
(3) Exchange instruments
3
False indication or
malfunction of
instruments;
malfunction of
odometer LED
(1) System failure
(2) Damaged wiring of
instrument
(1) Check if relevant frequency signal is
normal
(2) Exchange instruments
4
Absence of strokes
on odometer LED
Damaged wiring of
instrument
Exchange instruments
Audio System
Layout of Components
Layout of radio and tape player:
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1- Radio and tape player.
Description for host terminals
High pitch
High pitch
Woofer
Woofer
1
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Diagram of Terminal 16
Description Table of Terminal 16
Sound system
replacement
1. Audio unit
1) Remove procedure:
Using flat screwdriver, pry off instrument panel.
remove the screws.
Pull audio unit forward and unplug electric connector to remove audio unit assembly.
2
Installation is in the reverse order of removal. Verify normal function of audio unit.
2. Antenna replacement
Terminal No. Function Terminal No. Function
A1 Null B1 ILL (illuminator) (+)
A2 Rear left speaker (+) B2 Rear right speaker (-)
A3 Front left speaker (+) B3 Front right speaker (-)
A4 Rear right speaker (+) B4 Null
A5
Front right speaker
(+)
B5 Null
A6 ILL (illuminator) (-) B6 Front left speaker (-)
A7 ACC B7 Rear left speaker (-)
A8
Memory power
supply
B8 Ground
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1) Remove procedure:
disconnect the connector between side trim panel under A pillar and antenna
From A pillar, pull out the rod antenna.
2) Installation procedure:
Installation is in the reversed order of removal.
Replacement of woofer
1. Removal procedure:
1) Remove the door internal trim panel.
2) Disconnect on the connector on woofer.
3) Remove the screws on woofer.
4) Remove the woofer.
2. Installation procedure:
Installation is in the reversed order of removal.
Replacement of Loudspeaker
1. Removal procedure
1) Cut in border of loudspeakers with
a
flat screwdriver.
Pry off the loudspeaker.
Note:
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Don’t touch glass to avoid damage.
2) Unplug connector on rear side o
f
loudspeaker.
Remove loudspeaker.
2. Installation procedure
Installation is in the reversed order of removal.
Fault diagnosis
Any minor mistaking operation may cause a problem to be detected. Confirm failure according to
table below at first.
Fault Diagnosis Table of Audio System
Symptoms Cause Solution
Cannot be started
1. Burn battery fuse
Replace by using a new fuse in the
same size.
2. Poor contact between
power supply plug and unit
socket
Try to plug again or replace the plug.
Intermittent sound
Improperly connected
power supply
Inspect wiring
No sound from speaker
1. Volume knob is on
Minimum position.
Adjust the volume to a moderate level
2. incorrect connection Inspect wire and connection
auto-preset does not work
properly
antenna socket and antenna
cables connects abnormally
Check the antenna socket and the
antenna cables are connected properly
Radio signal is weak
To manually adjust or move to
another place with less obstruction to
search
cannot play USB
unrecognized formats of
file
Please refer to manuals to check file
format
Storage Device Is Not
Connected.
Check if properly connected
WW Wiper and Washer System
Front wiper
Installation Position
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3. Removal
1.Remove the front wiper plug cover (A) and nut (B), remove the front wiper arm and wiper blades.
2.Unscrew the nut and remove the front wiper arm and wiper blades (A).
A
B
There is white lines on glass, corresponding to the initial installation
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3.If necessary remove wiper blades, pull wiper blade adapter cap; Remove wiper blades through wiper blades Adapter Cap
with the U-hook on wiper arm.
4.Remove the ring and then remove instrumentation.
5.Connect W iper Motor connector from wiper motor and linkage assembly.
6.Remove 8 bolts, remove the windshield wiper motor and linkage assembly (A).
A
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Note: Before removing wiper motor and connecting rod assemblies, make sure the rod stops at the automatic stop position
(with power on, turn off the wiper switch, Wiper System natural stop position is automatically stopped position).
Installation
1.Install the wiper motor and linkage assembly, connect Wiper Motor connector. Mounting Screw torque is 9 ± 2N·m .
2.Install the Ventilation cover.
3.Install front windshield wiper arms and blades.
Caution:
You must run the windshield wiper motor, making sure wiper motor is at the initial position.
There is white anchor point under glass in black edge, install the arm and the blade which should be right on the
white point.
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The nut tightening torque is 24 ± 2N. m.
Check
Speed operation check
1.Split Wiper Motor connector.
NO . 53 53a 53b 31b 31
definition Low
speed
Power
supply
High
Speed
off-positi
on
Groundin
g
2. 53 and 53b terminal connected to the battery ( +) and No. 31 terminal to battery ( - ).
3. As showed in the below table, check if the engine is normal.
There is white lines on glass, corresponding to the initial installation
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Caution:
In general, sources of pollution are the insects, tree sap and hot wax processing from using some commercial vehicle
wash liquid. If wiper blades do not work properly, clean doors and windows and wiper blades with good cleaning
liquid or a mild detergent, then clean thoroughly with clean water.
Check wiper automatic stop
1.Use the control lever to operate motors in low speed.
2.Disconnect motor cable connector 31b terminal, making the motor stops anywhere except OFF.
3.Connect 31b and 53 terminals.
4.Connect battery ( +) and negative ( -) terminals to no. 53a terminal and no. 31 terminal separately.
5.Verify if the motor stops in OFF position.
Cleaning the motor
Check
1.Attach washing motor to the water tank and fill the water tank with water.
2. Connect the battery ( +) and ( -) to number 2 and number 1 terminal separately, check that if the motor is working
properly, if washing motor is running, and if the nozzle spray.
3. Change washer motor if any abnormal.
Location
Terminal
53 53a 53b 31b 31
OFF
LO
HI
31 53a5331b
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Note: before adding water to the reservoir, check if the filter has any impurity or pollution.
Clean filter according to needs.
NO . 1 2
definition Negative pole Power supply
Removal:
1.Disconnect negative terminal of battery.
2.Remove front bumper cover.
3.Remove washing water (A), separate washing motor connector (B).
4.Remove washing motor.
B
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5.Remove 2 bolts (A), and one nut (B), remove washer fluid jug (C).
Caution:
While repairing washing pump, be careful not to damage the seal of washer pump.
Before adding washing pump reservoir, do not operate the washing pump. Incorrect operation may cause premature
pump failure.
Installation
1.Install washing liquid pot.
2.Connect washing motor and washing hose.
3.Install washing motor
4.Install front and rear washing system nozzles.
5.Install the front bumper cover.
Note: Before installing the washing motor, check if there are impurity or pollution, and if necessary, clean filter and washing
A
C
A
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motor.
HORN
ELECTRIC HORN
Installation Position
Check
1. Remove the front bumper. Refer to "Front bumper replacement"
2. Disconnect the horn connector.
ELECT
ELECTR
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3. Connect the horn terminal no.1 with the battery positive, terminal no. 2 with the battery negative,
horn should beep.
4. If the horn doesn’t beep, it should be replaced.
Replace
1) Remove procedure:
Open the hood and remove the front bumper, refer to "the front bumper replacement".
Remove the fixing bolts of horn.
Disconnect the connector of horn.
remove the horn assembly.
2) Installation procedure:
Install the horn assembly.
Tightening torque: 9±1 N·m
Connect the connectors of horn assembly.
Cover up the engine hood
CIGAR Lighter
Installation Position
1
2
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Schematic Diagram of Cigar Lighter
Fault diagnosis
1) Inspection of Cigar Lighter System
steps Measures Normal result
Abnormal
result
1
Push lighter into socket till click
sound
Lighter will jump to edge of socket
when negative pole is connected to
electric power.
Cigarette lighter
does not work
2 Cigarette lighter lights
Cigarette lighter
off
A
c
c
e
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2) Cigarette lighter does not work
step
s
Measures Yes No
1
Check the fuses
if the fuse is burned off
To step 4 To step 2
2
Connect a testing lamp on both sides of lighter.
Is the testing lamp on?
To step 5 To step 3
3 Cigarette lighter light on? To step 6 To step 7
4 Replace the fuse -
to the "System
Check"
5 Replace cigar lighter -
to the "System
Check"
6 Replace cigar lighter -
to the "System
Check"
7 Repair poor contact -
to the "System
Check"
Alarm light switch
Installation Position
Warning light switch terminals description
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Schematic
Removal:
1 Using flat screwdriver pry off instrument panel cover, refer to "removal methods of instrument
panel cover"
2 Press connector with hands and force out the plug-ins.
3 Pry off alarm light switch with a flat screwdriver.
Installation
1 The warning light switch is mounted to the instrument cover.
2 Connect the plug-in to the alarm light switch terminals.
3 install the instrument hood to instrument, refer to the "instrument hood installation method"
A/C Switch
Installation Position
Terminal
Gea
r
Pin definition
Turning
signal
in
p
u
t
Right
lam
p
Turning
signal
out
p
u
t
Left
lam
p
Back
lamp
positive
Back
lamp
ground
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A/C switch plug-in terminal descriptions
Schematic
Removal:
1 Using flat screwdriver pry off instrument panel cover, refer to "removal methods of instrument
panel cover"
2 Press connector with hands and force out the plug-ins (yellow).
3 Remove the switch mounting bracket with cross screwdriver,
4 Pry off A/C switch with a flat screwdriver.
Installation
1 InstalltheA/Cswitchtoswitchbracket.
2 Install the mounting bracket to instrument hood with cross screwdriver,
3 Connect the plug-in to connect to A/C switch terminals.
Remarks
Function indicator
Background indicator
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4 Install t he instrument hood to instrument, refer to the "instrument
hood installation method"
7. Internal & external Circulation Switch
Installation Position
Internal and external Circulation switch plug-in terminal descriptions
Schematic
Remarks
Function indicator
Background indicator
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Removal:
1 Using flat screwdriver pry off instrument panel cover, refer to "removal methods of instrument
panel cover"
2 press connector with hands and force out the plug-ins(blue),
3 Remove the switch mounting bracket with cross screwdriver,
4 Use a flat-blade screwdriver to pry off the inner and outer loop switch.
Installation
1 Install the Internal and external loop switch to switch bracket,
2 Install the mounting bracket to instrument hood with cross screwdriver,
3 Connect the plug-in to internal and external loop switch terminals.
4 Install the instrument hood to instrument, refer to the "instrument hood installation method"
Rearview Mirror Heating Switch
Installation Position
Rearview mirror heating switch plug-in terminal descriptions
Schematic
Function indicator
Remarks
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Removal:
1 Using flat screwdriver pry off instrument panel cover, refer to "removal methods of instrument
panel cover"
2 Press connector with hands and force out the plug-ins(red),
3 Remove the switch mounting bracket with cross screwdriver,
4 Use a flat-blade screwdriver to pry off the mirror heat switch.
Installation
1 Install the mirror heat switch to switch bracket.
2 Install the mounting bracket to instrument hood with cross screwdriver,
3 Connect the plug-in to the mirror heat switch terminal.
4 Install the instrument hood to instrument, refer to the "instrument hood installation method"
Warm-up switch
Installation Position
Warm-up switch plug-in terminal descriptions
Schematic
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Removal:
1 Remove the fuse box cover to check the cover plate.
2 Hold the warm-up switch card with hand, and remove the warm-up switch from the Instrument
body,
3 Press connector with hands and force out the plug-ins.
Installation
1 Connect the plug-in to warm-up switch terminals,
2 Install the warm-up switch t o Instrument body.
Electric adjustment headlight switch
Installation Position
Remarks
Background
indicator
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Electric adjustment headlight switch plug-in terminal descriptions
Schematic
Removal:
1 Remove the fuse box cover to check the cover plate with hand.
Schematic
Small lam
p
Ground
Light adjusting switch
+12V power supply
Lef
t
g
enerato
r
Ri
g
ht
Generator
Li
g
ht ad
j
us
t
switch
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2 Hold down the headlight switch card to bosses with hand, and
remove the headlight switch from the Instrument body,
3 Press connector with hands and force out the plug-ins.
Installation
1 Connect the plug-in to electric adjustment headlight switch terminal.
2 Install the electric adjustment headlight switch to the instrument body.
Combination Switch
Installation Position
Combination LIGHT SWITCH plug-in terminal descriptions
Combination
light switch
Wiper switch
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Schematic
Combination Wiper Switch connector terminal description
Wiper docking sheath
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Schematic
Removal:
1 Remove the steering wheel (refer to the "steering wheel removal method")
2 Remove the package below the steering wheel (refer to the "package Removal Method")
3 Press connector with hands and, and firmly pull out the combination light connector and the
combination wiper connector.
4 Press and hold light switch and connection of combination wiper switch and Steering Column
with left and right hand separately at the same time, making the combined switch off steering
column, and take out the combination switch.
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Installation
1 Push the combination switch along the guide slot to Steering Column card slot. ,
2 Install the combination light switch plug-in and the combination wiper switch plug-in to
combination switch separately.
Boss Boss