Diagnostic Mode

DIAGNOSTIC MODE
For a Mark 20e system to enter diagnostic mode, vehicle speed must be below 10 km/h (6 mph) and no ABS condition present. If vehicle speed is not below 10 km/h (6 mph), a "no response" message could be displayed by the DRBIII(R). The following are characteristics of diagnostic mode:
^ The amber ABS and red brake warning indicator will blink rapidly If a hard trouble code is present, such as a CAB Power Feed Circuit diagnostic trouble code, the indicator will be illuminated without blinking until the diagnostic trouble condition is corrected.
^ Antilock operation is disabled.