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Home >> Jaguar >> 2010 >> XJ Base >> Repair and Diagnosis (Single Page) >> Quick Lookups >> DTC Index >> Diagnostic Trouble Code: Central Junction Box (CJB) -- XJ/X351 >> Diagnostic Trouble Code (DTC) Index DTC: Central Junction Box (CJB) >> Description And Operation >> Central Junction Box (CJB) >> DTC B12F4-12: Vehicle Speed Output - Circuit short to battery >> Action
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DTC B12F4-12: Vehicle Speed Output - Circuit short to battery: Action

NOTE: This DTC refers to a hardwired speed output from the central junction box that can be used for aftermarket/accessory fitting where a pulse-width modulation speed signal is required. The circuit is not used on the standard vehicle, but required for aftermarket fitments