E1 VS - VC OX IDL PSW TL - VF OT THW IG E2 VB +B STA E1 - THA #10 #20 E01 E02 IG ignition signal VC, VB, VS air flow meter IDL, PSW, TL throttle body THA intake air temperature THW coolant temperature OX,OT oxygen sensor #10, #20 injectors E1, E2, E01, E02 grounds +B power supply to ECU STA starter signal