Purpose of inspection
Inspect the condition of the ECU (input signal, output signal) when the malfunction occurs and determine the cause by checking the data of ECU.
• Freeze frame data
Freeze frame Read more Automotive Troubleshooting Data of ECU Inspection
Diagnostic Inspection
Outline
To efficiently proceed with troubleshooting, use diagnostic codes in order to identify the malfunctioning area. The following are judged by identifying the codes.
• When Read more Automotive Troubleshooting Diagnostic
With regards to the inspection for troubleshooting, besides the inspection method you have learned, a method to identify the malfunction location is needed. When you troubleshoot, combine several inspections Read more Automotive Troubleshooting Outline
Diagnostic Questioning
Diagnostic questioning involves asking the customer about the conditions when the symptoms occurred to reproduce those symptoms.
1. What the technician must keep in mind when performing Read more Verifying and Reproducing the Symptoms for automotive technicians
How to Approach Troubleshooting
The most important points for troubleshooting Your Automotive
• Correctly identify the symptoms of the malfunction. When troubleshooting, it is important to correctly Read more Fundamentals of Automotive Troubleshooting
The engine ECU possesses an OBD (On-Board Diagnostic) function which constantly monitors each sensor and actuator. If it detects a malfunction, the malfunction is recorded as a DTC (Diagnostic Trouble Read more Gasoline Engine Control System Diagnosis
1. Diagnosis
If the EMS/air suspension ECU detects a malfunction in this system, it blinks the damping mode or vehicle height indicator light to alert the driver of the malfunction. The ECU will also Read more EMS/Air Suspension Diagnosis & Fail-safe
The Engine & ECT ECU is equipped with a built-in self diagnostic system, which allows the technician to easily and quickly locate malfunctioning parts or circuitry during troubleshooting of the ECT. Read more Automotive Function Diagnosis