Before Changing A Control Module

Experience has shown that the majority of control modules returned for warranty repairs are fault-free. In this case, the control module has not been diagnosed correctly. Check the following points before changing the control module.
1 Check all grounding points and the power supply to the control module.
2 Using the diagnostic tool, check that all readings are reasonable.
3 Using the diagnostic tool, check that all activations function.
4 If the fault persists, the control module must be replaced.
5 When handling the control module, it is important to ground yourself by touching the engine for example. Avoid touching the pins of the control module.