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MPI - GENERAL 13A-2 General The following changes have been made to vehicles fitted with the 4G63-DOHC-T/C engine. Otherwise the system remains the MPI SYSTEM DIAGRAM Canister ✩ 2. ISC servo Vacuum By-pass Check ✩ 5. Purge control solenoid valve ✩ 6. Secondary air control solenoid valve Secondary air valve ✩ 3. Fuel pressure control solenoid valve ★ 1. O2 sensor Fuel From Intake ★ 2. Air flow sensor ★ 7. Barometric pressure sensor ★ 3. Intake air temp. ✩ 4. Waste gate solenoid valve Waste gate Catalytic converter ★ 6. Crank angle sensor ★ 8. Water temp. sensor ✩ 1. Injector From fuel tank ★ 4. Throttle position sensor Engine ECU ★ 1. O2 sensor ★ 2. Air flow sensor ★ 3. Intake air temp. sensor ★ 4. Throttle position sensor ★ 5. Cam position sensor ★ 6. Crank angle sensor ★ 7. Barometric pressure sensor ★ 8. Water temp. sensor ★ 9. Knock sensor • Power supply sensor • A/C switch fluid pressure switch • Alternator FR signal spray switch (auto) • Intercooler water spray switch (manual) ✩ 1. Injector ✩ 2. ISC servo ✩ 3. Fuel pressure control solenoid valve ✩ 4. Waste gate solenoid valve ✩ 5. Purge control solenoid valve ✩ 6. Secondary air control solenoid valve • Engine control relay (HI) • Condenser fan relay (LO) • Engine warning light spray relay • Intercooler water spray lamp • Tachometer ➩ ➩ ★ 5. Cam position sensor ★ 9. Knock sensor To fuel |