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How to use MC33908 fault detection function?

Question asked by ziqian li on Aug 7, 2018


   I am using the SBC(MC33908) and MPC5744 in ECU design.Now I want to diagnostic the SBC fault,for example the SBC-CAN moudle fault detection,in datasheet it say when CANL or CANH short to power and gnd it will report the fault to the Diag CAN1 register.But when I create the fault,I found the  Diag CAN1 register related fault bit is not set! Can you help me to analyze the reasons?Thanks!