CFMoto ATV CF500-5C/CF625-C 4x4. Service Manual - part 9

Engine turns over, fails to start

Possible

 

causes

Solution

Mechanical

 

failure

See

 

your

 

dealer

Crankcase

 

filled

 

with

 

water

 

or

 

fuel

Immediately

 

see

 

your

 

dealer

Clogged

 

fuel

 

filter

Replace

 

the

 

filter

Low

 

battery

 

voltage

Engine Pings or Knocks

Possible

 

cause

Solution

Incorrect

 

spark

 

plug

 

gap

 

or

 

heat

 

range

Poor

 

quality

 

or

 

low

 

octane

 

fuel

Replace

 

with

 

recommended

 

fuel

Incorrect

 

ignition

 

timing

See

 

your

 

dealer

127

-

-

Recharge

 

battery

 

to

 

12

.

5

 

VD

C

Set

 

gap

 

to

 

specified

 

or

 

replace

Engine Backfires

Possible

 

Cause

Solution

Mechanical

 

failure

See

 

your

 

dealer

Weak

 

spark

 

from

 

spark

 

plugs

Inspect

,

clean

 

and

/

or

 

replace

 

spark

 

plug

Incorrect

 

spark

 

plug

 

gap

 

or

 

heat

 

range

Incorrect

 

ignition

 

timing

See

 

your

 

dealer

Old

 

or

 

non

-

recommended

 

fuel

Replace

 

with

 

new

 

fuel

Incorrectly

 

installed

 

spark

 

plug

 

wires

See

 

your

 

dealer

Engine Runs Irregularly,Stalls or Misfires

Possible

 

cause

Solution

Low

 

battery

 

voltage

1

Inspect

,

clean

 

and

/

or

 

replace

 

spark

 

plug

Worn

 

or

 

defective

 

spark

 

plug

 

wires

See

 

your

 

dealer

Water

 

present

 

in

 

fuel

Replace

 

with

 

new

 

fuel

Incorrect

 

spark

 

plug

 

gap

 

or

 

heat

 

range

Loose

 

ignition

 

connections

128

-

-

Set

 

gap

 

to

 

specified

 

or

 

replace

 

plugs

Fueled

 

or

 

defective

 

spark

 

plug

Set

 

gap

 

to

 

specified

 

or

 

replace

 

plugs

Check

 

all

 

connections

 

and

 

tighten

Recharge

 

battery

 

to

 

12

.

5

 

VDC

Engine Runs Irregularly,Stalls or Misfires

Possible

 

Weak

 

Spark

 

Cause

Solution

Inspect

 

and

 

replace

Incorrect

 

fuel

Inspect

,

clean

 

and

 

repalce

Reverse

 

speed

 

limiter

 

malfuntion

See

 

your

 

dealer

Other

 

mechanical

 

failure

Possible

 

lean

 

fuel

 

mixture

 

cause

Solution

Low

 

octane

 

fuel

Incorrect

 

jetting

See

 

youe

 

dealer

Incorrect

 

jetting

See

 

your

 

dealer

Possible

 

Rich

 

Fuel

 

Mixture

 

Cause

Solution

Fuel

 

is

 

very

 

high

 

octane

Replace

 

with

 

lower

 

octane

 

fuel

129

-

-

Low

 

pressure

 

of

 

fuel

 

pump

Replace

 

fuel

 

pump

Kinked

 

or

 

plugged

 

fuel

 

vent

 

line

Clogged

 

air

 

filter

Replace

 

with

 

recommended

 

fuel

See

 

your

 

dealer

Low

 

or

 

contaminated

 

fuel

Add

 

or

 

change

 

fuel

,

clean

 

the

 

fuel

 

system

Replace

 

with

 

recommended

 

fuel

Possible

 

cause

Solution

Outl

 

of

 

fuel

Refuel

Inspect

 

and

 

replace

Water

 

present

 

in

 

fuel

Replace

 

with

 

new

 

fuel

See

 

your

 

dealer

Incrrect

 

spark

 

plug

 

gap

 

ot

 

heat

 

range

Loose

 

ignition

 

connections

Check

 

all

 

connections

 

and

 

tighten

Low

 

battery

 

voltage

Other

 

mechanical

 

failure

See

 

your

 

dealer

Incorrect

 

fuel

Clogged

 

air

 

filter

Inspect

,

clean

 

or

 

replace

Reverse

 

speed

 

limiter

 

malfunction

See

 

your

 

dealer

Engine Stops or Loses Power

130

-

-

Defective

 

fuel

 

pump

 

or

 

fuel

 

pump

 

relay

Kinked

 

or

 

plugged

 

fiel

 

vent

 

line

Replace

 

with

 

recommened

 

fuel

Recharge

 

battery

 

to

 

12

.

5VDC

Set

 

gap

 

to

 

specified

 

or

 

replace

 

plugs

Worn

 

or

 

defective

 

spark

 

plug

 

wires

Fouled

 

or

 

defective

 

spark

 

plugs

Inspect

 

and

 

replace

 

plug

 

if

 

necessary

Inspect

/

replace

Possible

 

cause

Solution

Overheated

 

engine

Clean

 

enginen

 

exterior

See

 

your

 

dealer

Engine Stops or Loses Power

131

-

-

Clean

 

radiator

 

screen

 

and

 

core

 

if

 

equipped

PCODE

 

No

MSE3.0

PCODE LIST

 Heating Control Circuit

Oxygen Sensor Heating Control Circuit Short- to-Ground

Oxygen Sensor Heating Control Circuit short-to-power

Internal Resistance of Oxygen Sensor Heating is 

 

improper 

Air Inlet Pressure Sensor Signal No Variable 

Improper Air Inlet Pressure Sensor 

Air Inlet Pressure Sensor Short-to-Ground

Air Inlet Pressure Sensor Short-to-Power

 Low Voltage of Air Inlet Temperature Sensor

 High Voltage of Air Inlet Temperature Sensor

 Improper Engine Coolant Temperature Sensor

Low Voltage Limit of Engine Coolant Temperature Sensor

High Voltage Limit of Engine Coolant Temperature Sensor

The Voltage of Throttle Postion Sensor is too low.

The Voltage of Throttle Postion Sensor is too high.

Improper Signal of Oxygen Sensor

Voltage of Oxygen Sensor is too low.

Signal Failure

Minimum Failure

Minimum Failure

Minimum Failure

Minimum Failure

Minimum Failure

Maxmum Failure

Maxmum Failure

Maxmum Failure

Maxmum Failure

Maxmum Failure

Failure Type

 Of Oxygen Sensor is open circuit.

Faiure Analysis

132

-

-

133

-

-

Signal Circurt Voltage of Oxygen Sensor is too high.

Oxygen Sensor is worn out.

Signal Circurt Failure of Oxygen Sensor

Signal Failure

Minimum Failure

Maximum Failure

Signal Failure

Signal Failure

Control Circurt of Cylinder 1 injector is open circurt.

Control Circurt of Cylinder 2 injector is open circurt.

Control Circurt of Cylinder 1 injector is short-to-ground.

Control Circurt of Cylinder 2 injector is short-to-ground.

Control Circurt of Cylinder 1 injector is short-to-power.

Control Circurt of Cylinder 2 injector is short-to-power.

The signal of Rotate Speed Sensor is unusual.

Reference Point of Rotate Speed Sensor Fault

Non-rotate Speed Sensor Pulse Signal(Open Circurt or Short Circurt)

Control Circuit of Idle Air Control Valve open circurt

Voltage of Control Circuit of Idle Air Control Valve is too low.

Voltage of Control Circuit of Idel Air Control Valve is too high.

Rotate Speed of Idle Control is slower than that of Target Idle.

is too  thin  when  making  End  of Line  Testing

is too thick  when  making  End of Line  Testing

self studying found closing loop control air fuel ratio

is unusual when making End of line Testing

self studying found closing loop control air fuel ratio

self studying found closing loop control air fuel ratio

134

-

-

PCODE uses 4 digit flashing.

Minimum Failure

Minimum Failure

Maximum Failure

Maximum Failure

Signal Failure

Unusual Failure

Oxygen Sensor is worn out (too thick)

 Oxygen Sensor is worn out (too thin)

ECU Code Failure

 High Votage of Battery 

 Low Votage of Battery 

Votage Signal of Battery is unusual.

Control Circurt of Fuel Pump Relay is incomplete.

Control Circurt of Fuel Pump Relay is short-to-ground.

Control Circurt of Fuel Pump Relay is short-to-power.

Drive Circurt of MIL Light is fault. 

 Rotate Speed of Idle Control is faster than that of Target Idle.

 Pin of Stepping Motor Driver is short to ground.

 Pin of Stepping Motor Driver is short to power.

 Pin of Stepping Motor Driver is open circurt.

Figure of Self

 

Studying

 

found

 

Closing

 

Loop

 

control

 

Air

 

Fuel

 

Ratio exceeds the upper limit.

Figure

 

of

 

Self

 

Studying

 

found

 

Closing

 

Loop

 

control

 

Air

 

Fuel

 

Ratio

 

exceeds

 

the

 

lower

 

limit

.

For Example: “0650”

                 “0” flashes 10 times.
                 “6” flashes 6 times.
                 “5” flashes 5 times.
                 “0” flashes 10 times.

Main Technical Data

Model

Data

Overall

 

Size

(

mm

)

2300×1180×1230

Wheel

 

Base

(

mm

)

Min

. 

Ground

 

Clearance

(

Load

)

(

mm

)

9500

6500

Furthest

Min

. 

Turning

Diameter

(

L

,

R

)

(

mm

)

Nearest

Min

. 

Turning

Diameter

(

L

,

R

)

(

mm

)

1490

275

CF

500-5

C

/

CF

625-

C

135

-

-

Model

Data

Weight

(

kg

)

Front

 

Track

(

mm

)

Rear

 

Track

(

mm

)

920

880

358

Model

Data

4

Fuel

 

Capacity

(

L

)

Reserve

 

Fuel

 

Capacity

(

L

)

Front

 

Axle

(

kg

)

(

Kerb

 

Mass

)

Axle

 

Loaded

Rear

 

Axle

(

kg

)

194

164

CF

500-5

C

/

CF

625-

C

136

-

-

CF

500-5

C

/

CF

625-

C

18

Unleaded

 

Gasoline

 93 

or

 

Above

Fuel

 

Type

Main Technical Data

Model

Data

Frame

 

Type

Caster

(

mm

)

Wheel

o

Rake

( )

Caster

 

Angel

Toe

 

in

(

mm

)

Front

 

Wheel

Rear

 

Wheel

Steel

26.5

Camber

：1±0.5（

Unloaded

）

Camber

：1±0.5（

Unloaded

）

26.5

4-10

o

9 52'

CF

500-5

C

/

CF

625-

C

137

-

-

Kingpin

 

Offset

(

mm

)

Main Technical Data

Model

Data

Rim

 

Type

and

 

Size

Tire
Size

Tire
Type

Front

 

Wheel

   (

mm

)

Rear

 

Wheel

   (

mm

)

Front

 

Wheel

Rear

 

Wheel

Rear

 

Wheel

Front

 

Wheel

Tubeless

 

tire

270/60-12　47

J

185/88-12　40

J

Plate

 12×6.0

AT

/

Light

 

Alloy

 12×6.0

AT

Plate

 12×7.5

AT

/

Light

 

Alloy

 12×7.5

AT

CF

500-5

C

/

CF

625-

C

138

-

-

Main Technical Data

Model

Data

  

Tire

Pressure

  (

kpa

)

Front

, 

Rear

Suspension

FFrroonntt

  

Wheel

Rear

 

Wheel

Independent

 

Swing

 

Arm

Front

 

Brake

Rear

 

Brake

Type

Type

Hydraulic

 

Disc

Hydraulic

 

Disc

Manual

 

Opeartion

CF

500-5

C

/

CF

625-

C

139

-

-

Manual

 

and

 

Foot

 

Connection

 

Operation

Front

 

Wheel

35，

Rear

 

Wheel

30

I

Operation
Mode

operation

Mode

Main Technical Data

Model

Data

Locking

 

Angle

 

of

 

Steering

 

o

(

L

,

R

)( )

Steering

 

Gear

Absorber

(

Front

, 

Rear

)

Max

. 

Turning

 

Angle

, 

Fr

. 

Wheel

Mechanial

 

Type

Helix

-

Spring

-

Damped

 

Type

31

30

Model

Data

o

Thermostat

(

C

)

o

Boiling

 / 

Freezing

 

Point

 

of

 

Coolant

( 

C

)

109/-35

CF

500-5

C

/

CF

625-

C

140

-

-

CF

500-5

C

/

CF

625-

C

Initial

 

Temperature

 71±3: 

Full

 

Openning

 

Temperature

 80

∽

83

Main Technical Data

Data

Manual

Compound

 

Impedance

Shift

 

Operation

 

Mode

Muffler

 

Type

Coolant

 

Capacity

（

L

）

Initial

：2.0；

Replacement

：1.9

CF

500-5

C

/

CF

625-

C

141

-

-

Model

Main Technical Data

Data

Engine

：

      

Single

 

Cylinder

, 

Liquid

-

Cooled

,

SOHC

、4-

Stroke

 

    

 

B

ore

×

S

troke

（

mm

）：96×82

 

Displacement

（

ml

）：594 

    

Compression

 

Ratio

：10∶1 

        

Starting

：

E

lectrical

 

S

tarting

/

M

anual

 

S

tarting

12

V

  5

Wx

2;  

W

5

W

H

1/

H

3 12

V

55

W

×4

Battery

 

Battery

 

Type

Lead

-

acid

 

Battery

6-

M

-18 (12

V

  18

AH

)

Bulbs

,

Quantity

,

Type

Front

 

Light

Head

 

Light

Turning

 

Light

Rear

 

Brake

/

Rear

 

Light

Amber

 

Lamp

 

Cover

:

R

10

W

12

V

10

W

Transparent

 

Lamp

 

Cover

:

RY

10

W

12

V

10

W

Red

：

R

21/5

W

12

V

21

W

/5

W

2 

pcs

CF500-5C

/

CF

625-

C

142

- -

Model

Main Technical Data