Standard Flow Of Diagnostic Troubleshooting

Fig 1: Diagnostic Troubleshooting Flow

Courtesy of HYUNDAI MOTOR CO.

*Using the customer problem analysis for reference, ask the customer as much details as possible about the problem.

NOTES WITH REGARD TO DIAGNOSIS

The phenomena listed in the following table are not abnormal.

PHENOMENON EXPLANATION CHART

Phenomenon	Explanation
System check sound	When starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment. This is because the system operation check is being performed.
ABS operation sound	Sound of the motor inside the ABS hydraulic unit operation (whine). Sound is generated along with vibration of the brake pedal (scraping). When ABS operates, sound is generated from the vehicle chassis due to repeated brake application and release (Thump: suspension; squeak: tires)
ABS operation (Long braking distance)	For road surfaces such as snow-covered and gravel roads, the braking distance for vehicles with ABS can sometimes be longer than that for other vehicles. Accordingly, advise the customer to drive safely on such roads by lowering the vehicle speed.
Diagnosis detection conditions can vary depending on the diagnosis code. When checking the trouble symptom after the diagnosis code has been erased, ensure that the requirements listed in "Comment" are met.