11.6.7 Diagnostic Information and Procedures
11.6.7.1 Diagnosis Description

Refer to

11.6.2

 

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.

11.6.7.2 Visual Inspection

–

Check installed after market equipment that may affect windshield wiper system operation.

–

Check the easy to access system components to identify whether there is a significant damage or potential malfunction.

–

Check whether the washer fluid level is correct.

11.6.7.3 Wiper Inoperative At All Speed

Schematic:

Wiper/Washer Switch

Front Wiper Switch

Intermittent Control

Front Wiper Motor

To BCM

To Fuse Block

FE11-5501b

Body Electric

Wipers / Washers System

11-225

Diagnostic Steps:

Step 1

Check the fuse IF27.

IF14

IF2

IF1

IF5

IF7

IF3

IF16

IF27

IF25

IF26

IF28

IF30

IF24

IF20

IF19

IF23

IF18

IF21

IF13

IF12

IF15

IF9

IF10

IF8

F17

F22

M

FE11-5502b

(a)

Is the fuse IF27 blown?
Fuse Rating: 20 A

Is the fuse blown?

No

Go to step 3

Yes

Step 2

Repair the fuse IF27 circuit.

(a)

Check whether the IF27 circuit is a short circuit.

(b)

Repair the circuits. Confirm that there are no short circuits.

(c)

Replace with fuses with rated current.

Are the wipers working properly?

Yes

System normal

No

Step 3

Check the wiper motor harness connector terminal No.1 voltage.

Front Wiper Motor Harness Connector CA14

FE11-5503b

(a)

Turn on the ignition switch.

(b)

Turn the wiper switch to "LOW" position.

(c)

Measure the wiper motor harness connector terminal No.1
voltage with a multimeter.
Standard Voltage: 11-14 V

Is the voltage specified value?

No

Go to step 5

Yes

Step 4

Replace the wiper motor.

(a)

Replace the wiper motor. Refer to 

11.6.8.9

 

Wiper Motor

Replacement

.

11-226

Wipers / Washers System

Body Electric

Are the wipers working properly?

Yes

System normal

No

Step 5

Check the wiper switch wiring harness connector terminal No.11 voltage.

Wiper Switch Harness Connector IP19

FE11-5504b

(a)

Disconnect the wiper switch wiring harness connector.

(b)

Turn on the ignition switch.

(c)

Measure terminal No.11 voltage with a multimeter.
Standard Voltage: 11-14 V

Is the voltage specified value?

Yes

Go to step 7

No

Step 6

Repair the wiper switch wiring harness connector circuit.

Wiper Switch Harness Connector IP19

FE11-5505b

(a)

Check and repair the open circuit between the wiper switch
wiring harness connector terminal No.11 and the fuse IF27.

Are the wipers working properly?

Yes

System normal

Body Electric

Wipers / Washers System

11-227

No

Step 7

Check the wiper switch continuity.

Wiper Switch Harness Connector IP19

FE55-5506b

(a)

Turn the wiper switch to "LOW" position.

(b)

Measure resistance between the wiper switch terminal No.11
and 7 with a multimeter.
Resistance Standard Value: Less than 1 Ω

Is the resistance specified value?

Yes

Go to step 9

No

Step 8

Replace the wiper switch.

(a)

Replace the wiper switch. Refer to 

11.6.8.8

 

Wiper and

Washer Switch Replacement

.

Is the wiper switch working correctly?

Yes

System normal

No

Step 9

Check wiper switch and wiper motor circuit.

11-228

Wipers / Washers System

Body Electric