2.11.7 Diagnostic Information and Procedures
2.11.7.1 Diagnosis Description

Refer to 

2.11.2.2

 

Starting System Description and Operation

get familiar with the system functions and operation before start system

diagnostics, so that it will help to determine the correct diagnostic steps, more importantly, it will also help to determine whether the
customer described situation is normal.

2.11.7.2 Visual Inspection

1. Check whether there are after market equipment that may affect the starting, charging or ignition system operations.

2. Check the easy to access system components to identify whether there is obviously damage or potential fault.

3. Check whether the battery is installed correctly.

4. Test battery status. Battery voltage is not less than 11 V.

5. Check whether there is wire damage. check starter motor, starter solenoid switches, ignition switches and the battery. Check

whether all ground connections are reliable.

6. If the battery, wires and switches are normal, and motor functions are normal, remove and test the starter motor.

7. When the charging system works properly, turn the ignition switch to "ON" position, the charge indicator lamp will be on. The

lamp will be off after the engine starts running.

8. Check whether the generator is loose or improperly installed, as well as the drive belt tension is normal, whether there is the

possibility of slipping.

2.11.7.3 Starter Can Not Stop

Step 1

Make sure the ignition switch is at "OFF" position.

Next

Step 2

After removal of the start motor relay, does the starter motor run?

No

Go to step 5

Yes

Step 3

Disconnect starter motor wiring harness connector.

(a)

Disconnect the battery negative cable. Refer to

2.11.8.1

 

Battery Disconnection

.

(b)

Disconnect starter motor wiring harness connector EN18.

(c)

Connect the battery negative cable.
Does the starter motor run?

No

The circuit between starter relay terminal No.
30 and starter harness connector is short to
power supply. Check and repair the faulty
part.

Yes

Step 4

Replace the starter motor. Confirm that the fault has been fixed.

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Step 5

Ignition switch is at "ON" position, does relay 85 terminal have 12V voltage?

No

Replace the starter. Confirm whether the fault
has been fixed.

Yes

Step 6

Check starter relay terminal No.85 voltage

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect the ignition switch wiring harness connector IP23.

(c)

Measure starter relay terminal No.85 voltage, whether there
is 12V voltage?

No

Replace the ignition switch.

Yes

Step 7

Circuit between the ignition switch wiring harness connector IP23 and starter relay terminal No.85 is short
to power supply. Repair the faulty part.

Next

Step 8

Diagnostic completed.

2.11.7.4 Engine Can Not Start

Prior to the implementation of this test procedure, it is necessary to check all the starting system fuses, so that it will help with quick
Diagnostic.

Step 1

Verify the fault.

Next

Step 2

Does the engine run?

No

Go to step 7

Yes

Step 3

Does the engine run properly?

No

Go to step 5

Yes

Step 4

Check ignition / fuel system. Refer to 

2.2.7.45

 

Crankshaft rotates, but the engine can not start.

.

Step 5

Check the starter motor power supply.

Check the following:

(a)

Whether the battery capacity is normal, whether the starting
voltage is lower than 10.5V, otherwise recharge the battery.

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(b)

Check the battery terminal connections for existence of loose
and corrosion.

(c)

Check the engine mechanical system for existence of
unusual noise. Check whether the cylinder compression
pressure is normal.
All normal?

No

Repair the faulty part.

Yes

Step 6

Replace the starter motor.

Step 7

Does the starter rotate?

Yes

Replace the starter motor.

No

Step 8

Does the starter motor electromagnetic switch work?

No

Go to step 14

Yes

Step 9

Check whether the engine and drive belt system catching (engine catching, generator catching)?

Yes

Repair the catching parts.

No

Step 10

Check whether the resistance between the battery and the starter solenoid switch is too high?

Standard Resistance:<0.3 Ω

Is the resistance specified value?

No

Check and repair the cable, if necessary,
replace the cable.

Yes

Step 11

Check whether the resistance between the battery and the starter ground circuit is too high.

Standard Resistance:<1 Ω

Is the resistance specified value?

No

Check and repair the cable, if necessary,
replace the cable.

Yes

Step 12

Check whether the starter solenoid switch wiring harness connections is normal.

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No

Check and repair the cable, if necessary,
replace the cable.

Yes

Step 13

Replace the starter motor.

Step 14

Check the starter motor control power supply.

1

 

Starter Harness Connector EN18

FE02-9402b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect starter harness connector EN18.

(c)

Turn the ignition switch to "ON" position.

(d)

Measure starter harness connector EN18 No.1 terminal
voltage.
Standard Voltage: 11-14 V
Is the voltage specified value?

Yes

Replace the starter motor.

No

Step 15

Check the starter motor control harness connector terminal EN18 continuity.

E

86

87

30

85

1

 

Starter Harness Connector EN18

1413 12 1110

5

1

2

3

4

6

7

8

9

J

L

K

I

G

D

C

B

E

F

A

86

86

30

87

85

86

86

87

87

87

30

30

30

85

85

85

2

2

3

3

5

5

1

1

1

2

5 3

1

2

5 3

86

87

30

1

1

2

5
3

2

5
3

85

EF01

EF21

EF18

EF25

EF20

EF29

EF06

EF02

EF30

EF17

EF19

EF23

EF22

EF26

EF24

EF08

EF27

EF28

EF05

EF07

EF16

EF04

EF03

EF15

EF12

EF10

EF1

1

EF09

EF13

EF14

EF32

EF31

FE02-9403b

(a)

Turn the ignition switch to "OFF" position.

(b)

Measure resistance between starter relay terminal No.30 and
starter harness connector EN18 terminal No.1 with a
multimeter.
Standard Resistance:<1 Ω
Is the resistance specified value?

No

The circuit between starter relay terminal No.
30 and starter harness connector EN18 is
open.

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