FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Before Changing A Control Module



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.

Before Changing A 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.

After performing this procedure Final Check