The following abbreviations are frequently used in this section:
| • | A: Amperes | 
| • | ABS: Antilock Brake System | 
| • | BCM: Body Control Module | 
| • | CKT: Circuit | 
| • | CPA: Connector Position Assurance | 
| • | DLC: Data Link Connector | 
| • | DTC: Diagnostic Trouble Codes | 
| • | DMM: Digital Multimeter | 
| • | EBCM: Electronic Brake Control Module | 
| • | ESB: Expansion Spring Brake | 
| • | GND: Ground | 
| • | IGN: Battery Voltage with Ignition to ON position | 
| • | Infinite: Open Circuit/Unmeasurable High Resistance | 
| • | IPC: Instrument Panel Cluster | 
| • | ohms: Ohms |