ASE Mechanical and Electrical Components Certification (B5) Practice Test

Fault codes in an Anti-lock Braking System (ABS) can be checked using both a scan tool and by interpreting the flashes of the ABS light.

Using a scan tool is a commonly accepted method because it provides a detailed readout of the fault codes stored in the ABS module. This allows technicians to precisely identify issues within the system. The scan tool can also provide additional diagnostic information, helping to streamline the troubleshooting process.

Interpreting the ABS light is another valid method, particularly for older systems that may not have the capability for extensive electronic diagnostics. In these cases, the ABS light may flash a specific number of times, which corresponds to a specific fault code. This method is less precise than using a scan tool but can still offer important diagnostic insights, especially when a scan tool is not available.

Utilizing both methods enhances diagnostic capability. The scan tool provides detailed information and aids in the accurate diagnosis of complex issues, while the ABS light can serve as a quick reference for more straightforward problems. Therefore, stating that both methods are acceptable reflects the versatility and practicality of diagnosing ABS faults.