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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 312 (Wiring Systems And Power Management - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Vehicle Will Not Change Power Mode >> Component Testing

Component Testing

WARNING: This page is about a different car, the 2022 Cadillac CT5. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the connector at the S38 On/Off Vehicle Switch.
  2. Test for 6.0k-7.5K Ω between the terminals listed below with the S38 On/Off Vehicle Switch released,
    • Signal terminal 4 and ground terminal 3
    • Signal terminal 8 and low reference terminal 7
    • If not between 6.0k-7.5K Ω 

      Replace the S38 On/Off Vehicle Switch.

    • Go to next step: If between 6.0k-7.5K Ω 
  3. Test for 1.3k-1.8k Ω between the terminals listed below with the S38 On/Off Vehicle Switch pressed.
    • Signal terminal 4 and ground terminal 3
    • Signal terminal 8 and low reference terminal 7
    • If not between 1.3k-1.8k Ω 

      Replace the S38 On/Off Vehicle Switch.

    • Go to next step: If between 1.3k-1.8k Ω 
  4. A fault is not currently present and may be an intermittent condition.
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