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Home >> Chevrolet >> 2011 >> Traverse LS, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Wiper System & Washer System) >> Diagnostic Information and Procedures >> Rear Wiper System Malfunction >> Component Testing >> Relay Test

Relay Test

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, connect the KR7 rear wiper relay.
  2. Test for 60-200 Ω between terminals 85 and 86.
    • If the resistance is not within the specified range, replace the KR7 rear wiper relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 86
    • 30 and 87
    • 30 and 85
    • 85 and 87
    • If not the specified value, replace the KR7 rear wiper relay.
  4. Test for less than 5 Ω between terminals 30 and 87A.
    • If greater than the specified range, replace the KR7 rear wiper relay.
  5. Install a 10 A fused jumper wire between relay terminal 85 and B+. Install a jumper wire between relay terminal 86 and ground. Test for less than 5 Ω between terminals 30 and 87.
    • If greater than the specified range, replace the KR7 rear wiper relay.