TROUBLE DIAGNOSES — Diagnostic Worksheet (sample form)
BR-40spec tableHow to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd)
DIAGNOSTIC WORKSHEET
KEY POINTS
WHAT
DetailsVehicle model
WHEN
DetailsDate, Frequencies
WHERE
DetailsRoad conditions
HOW
DetailsOperating conditions, Weather conditions, Symptoms
There are many kinds of operating conditions that lead to customer complaints, even if the system is normal. A good grasp of such conditions can make trouble-shooting faster and more accurate. In general, feelings for a problem depend on each customer's information. It is therefore important to fully understand the symptoms or under what conditions a customer complains. Make good use of a diagnostic worksheet such as the one shown below in order to utilize all the complaints for trouble-shooting.
Worksheet sample
Diagnostic worksheet — fields to fill out during customer interview
Customer name
Options / detailsMR/MS
Model & Year
Options / details(blank)
VIN
Options / details(blank)
Engine #
Options / details(blank)
Trans.
Options / details(blank)
Mileage
Options / details(blank)
Incident Date
Options / details(blank)
Manuf. Date
Options / details(blank)
In Service Date
Options / details(blank)
Symptoms
Options / detailsPedal vibration and noise; Warning activates; Long stopping distance; Abnormal pedal action; A.B.S. doesn't work; A.B.S. works but warning activates; A.B.S. works frequently
Engine conditions
Options / detailsWhen starting; After starting; Engine speed: 5,000 rpm or more
Road conditions
Options / detailsLow friction road (Snow, Gravel, Other); Protrusion
Driving conditions
Options / detailsHigh speed cornering; Vehicle speed: Greater than 10 km/h (6 MPH); Vehicle speed: 10 km/h (6 MPH) or less; Vehicle is stopped
Applying brake conditions
Options / detailsSuddenly; Gradually
Other conditions
Options / detailsOperation of electrical equipment; Large pedal stroke; Operation of clutch