LEMON Manuals: Even more car manuals for everyone
Home >> Cadillac >> 2017 >> XTS Base >> Repair and Diagnosis >> Body & Frame >> Windows >> Fixed And MOVEABLE Window System >> Diagnostic Information and Procedures >> Rear Window Defogger Malfunction >> Component Testing

Component Testing

Relay Test

  1. Ignition/Vehicle - Off
  2. Remove the component:KR5 Rear Defogger Relay
  3. Test for 70 to 110 ohms between the test points:Component terminal 85 & Component terminal 86
    • If not between 70 to 110 ohms 

      Replace the component:KR5 Rear Defogger Relay

    • If between 70 to 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:KR5 Rear Defogger Relay

    • 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 & Component terminal 87
    • If 2 ohms or greater 

      Replace the component:KR5 Rear Defogger Relay

    • If less than 2 ohms 
  7. All OK.