Component Testing

Relay Test

1. Ignition/Vehicle - Off
2. Remove the appropriate component:KR12B Windshield Wiper Relay

   - orKR12C Windshield Wiper Speed Control Relay

3. Test for 70 to 110 ohms between the test points:Component terminal 85 & 86
   • If not between 70 and 110 ohms 

     Replace the component:KR12B Windshield Wiper Relay - orKR12C Windshield Wiper Speed Control Relay

   • Go to next step: If between 70 and 110 ohms 
4. Test for infinite resistance between the test points:
   • Component terminal 30 & 85
   • Component terminal 30 & 86
   • Component terminal 30 & 87
   • Component terminal 85 & 87
   • If less than infinite resistance 

     Replace the component:KR12B Windshield Wiper Relay - orKR12C Windshield Wiper Speed Control Relay

   • Go to next step: If infinite resistance 
5. Connect a 3 A fused jumper wire between the test points:Component terminal 86 & 12 V

   Connect a jumper wire between the test points:Component terminal 85 & Ground

6. Test for less than 2 ohms between the test points:Component terminal 30 & 87
   • If 2 ohms or greater 

     Replace the component:KR12B Windshield Wiper Relay - orKR12C Windshield Wiper Speed Control Relay

   • Go to next step: If less than 2 ohms 
7. All OK.

Static Test

1. Ignition/Vehicle - Off
2. Disconnect the electrical connector:S82 Windshield Wiper/Washer Switch
3. Test for infinite resistance between the test points:Signal circuit terminal 2 & Low Reference circuit terminal 1 - Windshield Wiper High Speed Switch = Open
   • If less than infinite resistance 

     Replace the component:S82 Windshield Wiper/Washer Switch

   • Go to next step: If infinite resistance 
4. Test for less than 2 ohms between the test points:Signal circuit terminal 2 & Low Reference circuit terminal 1Windshield Wiper High Speed Switch = Close
   • If 2 ohms or greater 

     Replace the component:S82 Windshield Wiper/Washer Switch

   • Go to next step: If less than 2 ohms 
5. Test for infinite resistance between the test points:Signal circuit terminal 3 & Low Reference circuit terminal 1Windshield Wiper Low Speed Switch = Open
   • If less than infinite resistance 

     Replace the component:S82 Windshield Wiper/Washer Switch

   • Go to next step: If infinite resistance 
6. Test for the resistance listed below between the test points:Signal circuit terminal 3 & Low Reference circuit terminal 1
   • Delay 1 = 3.8 kohms
   • Delay 2 = 2.8 kohms
   • Delay 3 = 1.9 kohms
   • Delay 4 = 2.8 kohms
   • Delay 5 = 770 ohms
   • If the resistance is not within range 

     Replace the component:S82 Windshield Wiper/Washer Switch

   • Go to next step: If the resistance is within range 
7. All OK.