Geely EC718, EC718RV, EC715, EC715RV. Manual part — 481
Geely EC718, EC718RV, EC715, EC715RV. Manual part - 481
11.12.6 Diagnostic Information and Procedures
11.12.6.1 Diagnosis Description
Refer to
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.
11.12.6.2 Visual Inspection
–
Check installed aftermarket equipment that may affect the defrosting operation.
–
Check the easy to access system components to identify whether there is a significant damage or a potential malfunction.
–
If all the defroster are inoperative, check and repair the power supply or ground circuit poor connection, or open circuit.
11.12.6.3 Rear Window Defroster Inoperative
Schematic:
Rear Window Defog
A/C Control Module
Right Outside Rearview
Mirror Defogger
Left Outside Rearview
Mirror Defogger
Body Control Module
FE11-6100b
Diagnostic Steps:
Step 1
Use scan tool active test function to check the defroster working status.
(a)
Select as the following sequence: Body Control Module /
active test / rear defroster output control.
Is the rear defroster working properly?
Body Electric
Defrosting
11-437
No
Yes
Step 2
Check the defrost button.
16
32
15
31
14
30
13
29
12
28
11
27
10
26
9
25
8
24
7
23
6
22
5
21
4
20
3
19
2
18
1
17
A/C Control Panel Harness Connector IP40
FE11-6105b
(a)
Press the defrost button.
(b)
At the same time,test continuity between the air-conditioning
control module harness connector IP40 terminal No.28 and
the body ground with a multimeter.
Test Terminal
Test
Conditions
Continuity
IP40 28 - Body Ground
Release
10 kΩ or higher
IP40 28 - Body Ground
Press
Less than 1 Ω
Is the resistance specified value?
Yes
No
Step 3
Replace the air-conditioning control panel.
(a)
Replace the air-conditioning control panel. Refer to
Air-conditioning Control Panel Replacement
.
Is the rear window defrosting function working correctly?
Yes
System normal
No
Step 4
Check the defrost request signal.
1
2
3
4
5
6
7
8
9 10
20
30
40
19
29
39
18
28
38
17
27
37
16
26
36
15
25
35
14
24
34
13
23
33
12
22
32
11
21
31
Body Control Module 1 Harness
Connector IP29
FE11-6102b
(a)
Press the defrost button.
(b)
At the same time, test continuity between the BCM harness
connector IP29 terminal No.24 and the ground with a
multimeter.
Test Terminal
Test
Conditions
Continuity
IP29 24 - Body
Ground
Release
10 kΩ or higher
IP29 24 - Body
Ground
Press
Less than 1 Ω
Is the resistance specified value?
Yes
11-438
Defrosting
Body Electric
No
Step 5
Repair the defrost request signal open circuit.
(a)
Repair the open circuit.
Is the rear window defrosting function working correctly?
Yes
System normal
No
Step 6
Check the BCM defrost power output.
1
2
3
4
5
6
7
8
Body Control Module 3 Harness
Connector IP27
FE11-6103b
(a)
Press the defrost button.
(b)
At the same time, measure the BCM harness connector IP27
terminal No.3 voltage with a multimeter.
Standard Voltage: 11-14 V
Is the voltage specified value?
Yes
No
Step 7
Replace the BCM.
(a)
Is the rear window defrosting function working correctly?
Yes
System normal
No
Step 8
Measure the rear Window defroster grid supply voltage.
FE11-6104b
(a)
Press the defrost button.
(b)
At the same time, measure the rear window defrost grille
harness connector terminal No.1 voltage with a multimeter.
Test Terminal
Test
Conditions
Standard Voltage
Terminal 1
Release
0 V
Terminal 1
Press
11-14 V
Is the voltage specified value?
Body Electric
Defrosting
11-439
Yes
No
Step 9
Repair the rear window defrosting grid power supply circuit.
(a)
Repair the open circuit between the BCM harness connector
IP27 terminal No.3 and the rear window defroster grille
harness connector terminal No.1.
Is the rear window defrosting function working correctly?
Yes
System normal
No
Step 10
Check the rear window defroster grille grounded circuit.
(a)
Disconnect the rear window defroster grille wiring harness
connector.
(b)
Measure resistance between the rear window defroster grille
harness connector terminal No.1 and the ground with a
multimeter.
Resistance Standard Value: Less than 1 Ω
Yes
No
Step 11
Repair the rear window defroster grille ground circuit.
(a)
Repair the open circuit.
Is the rear window defrosting function working correctly?
Yes
System normal
No
Step 12
Replace the rear window defroster grille.
(a)
Replace the rear window defroster grille. Refer to
Rear Window Replacement (Sedan)
.
Confirm the repair completed.
Next
Step 13
System normal.
11.12.6.4 Electric Rearview Mirror Defroster Inoperative
Schematic:
Rear Window Defroster Inoperative
.
11-440
Defrosting
Body Electric
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