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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Power Seats) >> Diagnostic Information and Procedures >> Lumbar/Bolster/Massage Malfunction (Lumbar/Bolster/Massage Malfunction (2-Way)) >> Diagnostic Fault Information

Diagnostic Fault Information

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Circuit Number Circuit Function Short to Ground Open/High Resistance Short to Voltage Signal Performance
2040 B+ 1 1 - -
610 Control 1 1 - -
611 Control 1 1 - -
2150 Ground - 1 - -
740 B+ 2 2 - -
210 Control 2 2 - -
211 Control 2 2 - -
2250 Ground - 2 - -
  1. The driver lumbar support is inoperative
  2. The passenger lumbar support is inoperative