1

2

3

Generator Harness Connector EN07

Instrument Cluster Harness Connector IP03

15 14 

12 

10 9 8 7  6 5 4 3 2 1 

16 
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18  17 

FE02-9409b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect generator harness connector EN07.

(c)

Remove the instrument cluster, Disconnect the instrument
cluster wiring harness connector IP03.

(d)

Check the continuity between instrument cluster wiring
harness connector IP03 and generator harness connector
EN07 terminal No.1.

(e)

Measure resistance between generator harness connector
EN07 terminal No.1 and a reliable ground.
Standard Resistance Value:

Test Items

Standard Value Value

Continuity Between IP03

(13) and EN07 (1)

<1 Ω

Resistance Between EN07

(1) and A Reliable Ground

<1 Ω

(f)

Connect generator harness connector EN07.

(g)

Connect instrument cluster harness connector IP03, and
install the instrument cluster.
Is the resistance specified value?

No

Repair the faulty part. Confirm the fault has
been fixed.

Yes

Step 4

Replace the instrument cluster. Confirm the fault has been fixed.

Step 5

Check the generator regulator power supply circuit.

1

2

3

Generator Harness Connector EN07

FE02-9410b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect generator harness connector EN07.

(c)

Measure voltage between generator harness connector
EN07 terminal No.3 and a reliable ground.
Standard Voltage: 11-14 V

(d)

Connect generator harness connector EN07.
Is the voltage specified value?

No

Generator regulator power circuit is open.
Repair the faulty part. Confirm the fault has
been fixed.

Yes

Step 6

Check the generator regulator excitation power supply.

Engine

Starting / Charging System JL4G18-D

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1

2

3

Generator Harness Connector EN07

FE02-9411b

(a)

Turn the ignition switch to "OFF" position.

(b)

Disconnect generator harness connector EN07.

(c)

Measure voltage between generator harness connector
EN07 terminal No.2 and a reliable ground.
Standard Voltage: 11-14 V

(d)

Connect generator harness connector EN07.
Is the voltage specified value?

No

Go to step 8

Yes

Step 7

Replace the generator. Refer to 

2.11.8.3

 

Generator Replacement

.

Step 8

Are Instrument cluster, electric windows, air-conditioning system working properly?

No

Relay IG1 does not provide IG1 power. Check
the IG1 relay.

Yes

Step 9

The circuit between EN07 terminal No.2 and instrument cluster fuse IF25 is open. Check and repair the faulty
part.

Next

Step 10

Diagnostic completed.

2.11.7.7 Charging Indicator Always Off

Step 1

Connect the ignition switch, and keep the engine off, is battery charging indicator on?

No

Intermittent Fault. Refer to 

2.2.7.3

 

Intermittent

Fault Check

Yes

Step 2

Disconnect generator harness connector EN07, is battery charging indicator on?

No

Go to step 6

Yes

Step 3

Check the generator regulator power supply circuit.

Refer to 

2.11.7.6

 

Charging Indicator Always On

Step 4.

Is the voltage specified value?

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Starting / Charging System JL4G18-D

Engine

No

The generator regulator power circuit is open.
Repair the faulty part. Confirm the fault has
been fixed.

Yes

Step 4

Check the generator regulator excitation power supply.

Refer to 

2.11.7.6

 

Charging Indicator Always On

Step 5.

Confirm the fault has been fixed.

No

Refer to 

2.11.7.6

 

Charging Indicator Always

On

Step 6

Yes

Step 5

Replace the generator. Confirm the fault has been fixed.

Step 6

Are other instrument lights and indicators working properly?

No

Go to step 8

Yes

Step 7

Replace the instrument cluster. Refer to 

12.8.3.1

 

Instrument Panel Replacement

.

Step 8

Check the instrument power circuit and ground circuit. Refer to 

11.7.6.7

 

DTC U129C U129D

.

Next

Step 9

Diagnostic completed.

2.11.7.8 Generator Noise Diagnosis

Diagnostic Tips:Generator noise may be caused by electrical or mechanical noise. Electrical noise (electromagnetic hum sound) is
usually added to the generator with the electrical load changes, which is the normal operating characteristics of all generators. During
the service, pay attention to distinguish, otherwise it will cause unnecessary customer complaints. When diagnose the generator
mechanical noise, firstly check whether there are loose generator components or interference. In some cases even if the sound in
engine compartment is light, it can enter into the passenger compartment. If this is the case, replacing the generator does not solve
the problem, which leads to misjudgments.

Step 1

Keep the generator not working, and confirm whether the noise disappears.

(a)

Start the engine, verify that the noise can be heard.

(b)

Shut down the engine.

(c)

Disconnect the generator from the generator on the wiring
harness connector EN07.

(d)

Start the engine.
Confirm whether the noise disappears?

Yes

Go to step 6

Engine

Starting / Charging System JL4G18-D

2-569

No

Step 2

Check the generator shaft.

(a)

Shut down the engine.

(b)

Remove the drive belt.

(c)

Rotate the generator pulley by hand.
Does the generator rotate smoothly without catching and
grinding noise?

Yes

Go to step 6

No

Step 3

Reinstall the generator.

Remove and install the generator. Tighten the generator retaining
bolts to the specified torque. Refer to 

2.11.8.3

 

Generator

Replacement

. Start the engine, does the noise disappear?

Yes

System normal

No

Step 4

Is the drive belt loose?

Yes

Go to step 7

No

Step 5

Compare with a known good vehicle, is the noise the same?

Yes

System normal

No

Step 6

Replace the generator.

Important Note

If a clear generator fault has not been found, make sure that all
other possible noise sources have been excluded and then replace
the generator.

If the noise is part of the normal generator characteristics, after
replacing generator the noise will not disappear.

Yes

Troubleshooting

Step 7

Replace the drive belt or the drive belt tensioner.

Refer to 

2.6.8.3

 

Drive Belt Replacement

or

2.6.8.4

 

Drive Belt

Tensioner Replacement

.

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