The RTD is
cszhang_0-1778766644319.png
and I tested <Siul2_Dio_Ip_Example_S32E2XX_R52> too, got the same issue. Then I clicked the <Test Connection> on Debugger tab, the SIul2 example project did the configuration generation. measured JTAG VTREF value, it's 3.297 V.
cszhang_1-1778766751847.png
cszhang_0-1778767016041.png
the E2 to JTAG connector, has a 33-ohm resistor on board,
cszhang_2-1778766847722.png