Symptom Related Diagnostic Procedures

DIAGNOSTIC MODE
To enter diagnostic mode, a 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. The following are characteristics of diagnostic mode:
^ The amber ABS warning indicator will blink rapidly (about 1/2 second ON and 1/2 second OFF). If a hard trouble code, such as Valve Power Feed Failure code is present, the indicator will be illuminated without blinking until the trouble condition is cleared.
^ Antilock operation is disabled.
^ The HCU valves cannot be actuated when the vehicle speed is above 8 km/h (6 mph). If valve actuation is attempted above 8 km/h (5 mph), a "No Response" message will be displayed on the DRBIII.