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Component Testing

WARNING: This page is about a different car, the 2011 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.

Relay Test

  1. Ignition OFF, disconnect the relay.
  2. Test for 70-100 Ω between terminals 85 and 86.
    • If the resistance is not within the specified range, replace the relay.
  3. Test for infinite resistance between the following terminals:
    • 30 and 85
    • 30 and 86
    • 30 and 87
    • 85 and 87
    • If not the specified value, replace the relay.
  4. 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 2 Ω between terminals 30 and 87.
    • If greater than the specified range, replace the relay.
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