Electronic control fuel injection system (Common rail type) 1E-13 Interview 2. All of complaints from customers do not always mean troubles. 3. Extra repair steps are caused if the trouble condition is not correctly reported to a mechanic in charge. The check list helps to diagnose, repair, and recheck after repair work in the maintenance shop. Interview 1. Comprehend the contents of a customer’s complaint using “Check list (engine control system)”. Do not interview blindly. Interview about the trouble presumed by symptoms (cases). 2. Evaluate the trouble information correctly. Figure out specifically based on 5W1H. Example:
The temperature is low, at the time of starting, constantly, in the vicinity of the engine portion, metallic noise, etc. Points for interview What Trouble symptom When Date, time, frequency of occurrence Where Road condition In what condition Running condition, operating condition, weather How Feeling about symptom Check list for engine control system It is necessary to confirm “Trouble symptom” and “Data of occurrence of a trouble” based on check list (engine control system) on receiving the machine from a customer at a service shop. 1 2 TSWG0155 TSWG0160 Name 1. Trouble symptom 2. Frequency of trouble occurrence / trouble conditions Because: 1.
It may be impossible to reproduce the trouble symptom at a service shop.