Transfer Case: Description: Diagnostics
The transfer box ECU can store fault codes which can be retrieved using TestBook/T4 or a diagnostic tool using ISO9141/KW2000* protocol.
The information is communicated via a diagnostic socket which is located in the fascia, in the driver's side stowage tray. The socket is secured in the fascia panel and protected by a hinged cover.
The diagnostic socket allows the exchange of information between the various ECU's on the bus systems and TestBook/T4 or another suitable diagnostic tool. The information is communicated to the socket via a diagnostic DS2 bus. This allows the retrieval of diagnostic information and programming of certain functions using TestBook/T4 or another suitable diagnostic tool. The transfer box ECU uses Diagnostic Trouble Codes (DTC) which relate to transfer box electrical faults.