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SE-10 < SYMPTOM DIAGNOSIS > SQUEAK AND RATTLE TROUBLE DIAGNOSES SYMPTOM DIAGNOSIS SQUEAK AND RATTLE TROUBLE DIAGNOSES Work Flow INFOID:0000000004215448 CUSTOMER INTERVIEW Interview the customer if possible, to determine the conditions thatexist when the noise occurs. Use the Diag- nostic Worksheet during the interviewto document the facts and conditions when the noise occurs and any customer'scomments; refer to . This information is necessary to duplicate the conditions that exist when the noise occurs. • The customer may not be able to provide a detailed descriptionor the location of the noise. Attempt to obtain all the facts and conditionsthat exist when the noise occurs (or does not occur). • If there is more than one noise in the vehicle, be sure to diagnoseand repair the noise that the customer is concerned about. This can be accomplishedby test driving the vehicle with the customer. • After identifying the type of noise, isolate the noise in terms of its characteristics. The noise characteristics are provided so the customer, service adviser and technician are all speaking the same language when defining the noise. • Squeak —(Like tennis shoes on a clean floor) Squeak characteristics include the light contact/fast movement/broughton by road conditions/hard sur- faces=higher pitch noise/softer surfaces=lowerpitch noises/edge to surface=chirping • Creak—(Like walking on an old wooden floor) Creak characteristics include firm contact/slow movement/twisting witha rotational movement/pitch depen- dent on materials/often brought on by activity. • Rattle—(Like shaking a baby rattle) Rattle characteristics include the fast repeated contact/vibration orsimilar movement/loose parts/missing clip or fastener/incorrect clearance. • Knock —(Like a knock on a door) Knock characteristics include hollow sounding/sometimes repeating/oftenbrought on by driver action. • Tick—(Like a clock second hand) Tick characteristics include gentle contacting of light materials/loosecomponents/can be caused by driver action or road conditions. • Thump—(Heavy, muffled knock noise) Thump characteristics include softer knock/dead sound often brought on by activity. • Buzz—(Like a bumble bee) Buzz characteristics include high frequency rattle/firm contact. • Often the degree of acceptable noise level will vary dependingupon the person. A noise that you may judge as acceptable may be very irritatingto the customer. • Weather conditions, especially humidity and temperature, may havea great effect on noise level. DUPLICATE THE NOISE AND TEST DRIVE SBT842 |