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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 (4-Way Without AHE, AHH, AF6, or AKE)) >> 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 - -
1069 Signal 1 1 1 -
4891 Control 1 1 3 -
2193 Low Reference - 1 - -
2150 Ground - 1 - -
740 B+ 2 2 - -
1068 Signal 2 2 2 -
4890 Control 2 2 3 -
2194 Low Reference - 2 - -
2250 Ground - 2 - -
1. The driver seat lumbar support functions are inoperative
2. The passenger seat lumbar support functions are inoperative
3. The seat lumbar support pump is always ON