Purpose of inspection

To determine whether the malfunction is a rich or a lean air fuel mixture.

Criteria

Using an intelligent tester, check the voltage of the O2 sensor or short term fuel

trim.

The Read more Automotive Troubleshooting Air Fuel Ratio (A/F) Inspection ›

Purpose of inspection

By confi rming the change in the engine speed when the combustion of each cylinder is stopped in turn for power balance inspection, judge whether or not the malfunction affects Read more Automotive Troubleshooting Cylinder Power Balance Inspection ›

Inspection method
Using a compression gauge, measure the compression pressure.
Criteria
The standard value differs depending on the engine model, therefore refer to the Repair Manual.
When compression Read more Automotive Troubleshooting Compression System Inspection ›

Automotive Troubleshooting Ignition and Glow System Inspection
Inspection method (gasoline engine)
Remove the spark plug and crank the engine to check for a spark at the tip of the plug and the spark’s Read more Automotive Troubleshooting Ignition and Glow System Inspection ›

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 ›