Circuit/System Description

When conditions arise in cylinder balancing, a scan tool output control test function is provided to help in locating the cause. A compression test can be used to decide whether the cause should be attributed to the engine or the injection system. Once the problem has been limited to the injectors, further tests can determine which injector is responsible for the condition in cylinder balancing. The test consists of 3 modes (A, B, C), which are conducted in different test conditions.