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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 135 (12 V Starting And Charging - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Stop/Start System Malfunction >> 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
6240 B+ 4 4 - -
6340 B+ 4 4 - -
4320 Ignition 4 4 - -
1111 Signal 1 1 1 -
625 Control 4 4 - -
1110 Control 2 2 3 -
2172 Control 4 4 - -
2173 Control 4 4 - -
1450 Ground - 1, 2 - -
2550 Ground - 4 - -
1. Stop/Start switch inoperative
2. Stop/Start switch indicator inoperative
3. Stop/Start switch indicator always on
4. Some components and modules will not operate properly