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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 150 (Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> DTC B147E or B147F: Battery Saver Relay Set Secondary (With KL9) >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Relay Test

  1. Ignition OFF, disconnect the appropriate KR104A Battery Saver Relay 1 or the KR104B Battery Saver Relay 2.
  2. Test for 70-150 Ω between the following terminals.
    • 1 and 6
    • 2 and 6
    • If less than 70 or greater than 150 Ω 

      Replace the relay.

    • If between 70-150 Ω 
  3. Install a 3 A fused jumper wire between relay terminal 2 and 12 V. Install a jumper wire between relay terminal 6 and ground.
  4. Test for infinite resistance between the following terminals:
    • 3 and 6
    • 3 and 5
    • 3 and 1
    • 3 and 2
    • 1 and 5
    • 2 and 5
    • If less than infinite resistance 

      Replace the relay.

    • If infinite resistance 
  5. Install a 3 A fused jumper wire between relay terminal 1 and 12 V. Install a jumper wire between relay terminal 6 and ground.
  6. Test for less than 5.0 Ω between terminals 3 and 5.
    • If 5.0 Ω or greater 

      Replace the relay.

    • If less than 5.0 Ω 
  7. All OK