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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 With 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
740 B+ U0210, U0261 U0210 - -
2040 B+ U0209, U0260 U0209 - -
3758 Serial Data U0209, U0260 U0209 U0209, U0260 -
4116 Serial Data U0210, U0261 U0210 U0210, U0261 -
2816 Signal 2 2 2 -
2818 Signal 1 1 1 -
2815 Low Reference - 2 2 -
2817 Low Reference - 1 1 -
2305 Control 1 1 1 -
2306 Control 2 2 2 -
4890 Control 2 2 2 -
4891 Control 1 1 1 -
2150 Ground - U0209 - -
2250 Ground - U0210 - -
1. Driver lumbar, bolster, and massage functions are inoperative
2. Passenger lumbar, bolster, and massage functions are inoperative