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Home >> Cadillac >> 2018 >> CT6 Plug-In >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Electric Converters and Controllers >> Hybrid/EV Control System >> Diagnostic Information and Procedures >> Drive Mode Select Switch Malfunction >> Component Testing
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Component Testing

  1. Vehicle OFF, disconnect the harness connector at the S48E Multifunction Switch.
  2. Test for infinite resistance between the signal terminal 5 and the ground terminal 2 with the switch in the open position.
    • If less than infinite resistance 

      Replace the S48E Multifunction Switch.

    • Go to next step: If infinite resistance 
  3. Test for less than 2 Ω between the signal terminal 5 and the ground terminal 2 with the switch in the closed position.
    • If 2 Ω or greater 

      Replace the S48E Multifunction Switch.

    • Go to next step: If less than 2 Ω 
  4. All OK.