Diagnostic Strategy

The diagnostic strategy remains unchanged. You first read the diagnostic trouble codes from all the control modules and then perform fault diagnosis on the diagnostic trouble codes whose symptom description corresponds with the customer complaint. The difference in the diagnostic tool is that you now always read the diagnostic trouble codes from all control modules one at a time. You can then choose to transfer the diagnostic trouble codes to WIS via an RS 232 cable or enter them by hand. The diagnostic trouble codes now have two extra characters to point out the type of fault more accurately.

To easily find the activations or read values used in fault diagnosis for a specific trouble code you can select, "Diagnostic Data, trouble code" and then see directly just the values used in WIS fault diagnosis.