SsangYong Korando III (2010 year). Service manual - part 438

03-36

Rain sensor malfunction (no rain sensor signal)

▶

The AUTO switch speed level is adjusted (ex: speed level 4 → level 3)

The wiper LO relay is operated once (T1).

A. 

B.

Operation 1. 

("no signal detected" signal received from the rain sensor)

Basic conditions

IGN ON and AUTO switch ON

03-37

8710-01

Operating process

- IGN ON/Wiper AUTO switch ON 

03-38

Speed sensitive AUTO wiper

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The speed sensitive AUTO wiper is operated as follows for the vehicles without rain sensor or the 

vehicles without rain sensor coupled wiper operation because of faulty rain sensor.

Intermittent wiper operation by the values from vehicle speed and speed level of the wiper speed 

control.

-

Speed sensitivity AUTO switch rest time

AUTO switch level

Level

Resistance

Remarks

0%

3 kΩ or less

FAST

25%

8 kΩ to 13 KΩ

50%

18 kΩ to 30 KΩ

75%

35 kΩ to 43 KΩ

100%

45 kΩ or more

SLOW

There are HYSTERISIS ranges between the 

levels.

The wiper remains activated for the time remaining when the AUTO switch is turned OFF during the 

speed sensitive wiper operation.

The intermittent operation is reactivated when the AUTO switch is turned ON with IGN ON. 

The intermittent operation is reactivated when the AUTO switch is turned ON with IGN ON.

- 

- 

-

03-39

8710-01

Wiper troubleshooting           

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The wiper does not cycle one time when turning the multi-function wiper 

switch from OFF to AUTO position or when starting the engine with the multi-

function wiper switch in AUTO position.

Symptom 1.

When starting the engine with the multi-function wiper switch in AUTO position, the wiper always 

cycles one time to remind the driver of system in AUTO mode.

This wiper operation is performed only for the first time when turning the multi-function wiper switch 

from OFF to AUTO position with IGN ON. If the switch is turned from OFF to AUTO again after 

that, the wiper is operated only when raining to prevent the wiper blade from wearing.

1. 

2.

It rains but the wiper does not work with the wiper switch in AUTO position.

Symptom 2.

Check if the multi-function wiper switch is in AUTO position.

Check the power to the rain sensor. That is, check the pin no. 3 (GND) and pin no. 4 (IGN).

Check that the wiper relay is intact.

1. 

2. 

3.

The wiper operates 3 or 4 times with high speed abruptly.

Symptom 3.

Check if the wiper speed control switch is set to the fast side. 

The fast stage has the highest sensitivity and is very sensitive to the small change of amount of rain 

drops. Therefore, adjust the knob to lower the sensitivity level.

The wiper continues work even if the windshield glass is dry.

Symptom 4.

Check the wiper blade for wear. If the wiper blade cannot wipe the glass uniformly and clearly, this 

problem could occur. In this case, replace the wiper blade with a new one. 

Check if the wiper speed control switch is set to the fast side. 

1. 

2.

The fast stage has the highest sensitivity and is very sensitive to the small change of amount of rain 

drops. Therefore, adjust the knob to lower the sensitivity level.

The overall wiper response is too fast or slow.

Symptom 5.

Check if the wiper speed control switch is set to the fast or slow side.

Notify that the user can select the sensitivity by selecting the variable resistance value. And, select a 

proper stage.

The wiper also cycles one time when the multi-function wiper switch is turned from OFF to AUTO 

position during 5 minutes after the rain stops.