13. FUEL INJECTION SYSTEM Downtown 300i ABS Screw/Set Plate MAP DISASSEMBLY The throttle position sensor (TPS) and idle air bypass valve (ISC) have to be reset when the throttle body MAP, TPS, ISC or ECU has been reinstalled. Remove the screw and then remove the ISC and set plate. Remove the screw and set plate. Remove the MAP Remove the screw AND then remove the Screw ISC/Set Plate TPS. TPS ASSEMBLY The throttle position sensor (TPS) and idle air bypass valve (ISC) have to reset when the throttle body MAP, TPS, ISC or ECU has been reinstalled. Screw ISC TPS Apply oil onto a new O-ring. When install the TPS onto the throttle body, being careful not to damage the O-ring. Install and tighten the screw securely. MAP 13-26