TROUBLE DIAGNOSES — How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd) — Diagnostic Worksheet
BR-46spec tableCustomer worksheet — useful to record before powering off the car so intermittent CONSULT-only faults can be reproduced.
How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd)
DIAGNOSTIC WORKSHEET
NOTE
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.
WHAT
DescribesVehicle model
WHEN
DescribesDate, Frequencies
WHERE
DescribesRoad conditions
HOW
DescribesOperating conditions, Weather conditions, Symptoms
Worksheet sample
Customer name MR/MS
Value / options
Model & Year
Value / options
VIN
Value / options
Engine #
Value / options
Trans.
Value / options
Mileage
Value / options
Incident Date
Value / options
Manuf. Date
Value / options
In Service Date
Value / options
Symptoms
Value / options☐ Pedal 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
Value / options☐ When starting; ☐ Engine speed: 5,000 rpm or more; ☐ After starting
Road conditions
Value / options☐ Low friction road (☐ Snow ☐ Gravel ☐ Other); ☐ Protrusion
Driving conditions
Value / options☐ High 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
Value / options☐ Suddenly; ☐ Gradually
Other conditions
Value / options☐ Operation of electrical equipment; ☐ Large pedal stroke; ☐ Operation of clutch