Diagnostic Fault Information
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Battery Positive Voltage | C111B 03 | C111B 03 | C111B 07 | C111B 5A |
| Trailer Brake Control Signal | C1112 00 | C1112 00 | C1112 00 | - |
| Trailer Brake Current Feedback Signal (LIN Communication Circuit) | U1505, U1556 | U1505, U1556 | U1505, U1556 | U2504 |
| Trailer Brake Enable Signal | C1113 02 | C1113 02 | C1113 01 | - |
| Trailer Auxiliary Supply Voltage (Trailer Brake Output Signal) | C1114 00 | C1114 00 | C1114 00 | C1114 00 |
| Ground | - | C1112 00 | - | - |