general information - Martin Nez

4-64 FI SYSTEM DIAGNOSIS“C28” (P1655) STV ACTUATOR CIRCUIT MALFUNCTIONDETECTED CONDITIONThe operation voltage does not reach the STVA.ECM does not receive communication signal fromthe STVA.POSSIBLE CAUSE• STVA malfunction• STVA circuit open or short• STVA motor malfunctionSTVAB/LgP/WGW/BECMSTVA. 1BSTVA. 1ASTVA. 2BSTVA. 2AINSPECTIONStep 11) Lift and support the fuel tank. (5-3)2) Remove the air cleaner box. (5-13)3) Check the STVA lead wire coupler for loose or poor contacts.14) Turn the ignition switch to ON to check the STV operation.(STV operating order: Full open → 95% open)1Is the operating OK?YES Go to Step 2.• Loose or poor contacts on the STVA coupler• Open or short circuit in the B/Lg, P/W, W/B orNOGreen wires• If wire and connection are OK, go to Step 2.5) After repairing the trouble, clear the DTC using SDS tool.(4-26)