Acura TSX / Honda Accord CL. Manual — part 567

Fig. 59: Electronic Throttle Control System Diagram

EVAPORATIVE EMISSION (EVAP) CONTROL DIAGRAM

The EVAP controls minimize the amount of fuel vapor escaping to the atmosphere. Vapor from the fuel tank is
temporarily stored in the EVAP canister unit it can be purged from the canister into the engine and burned.

The EVAP canister is purged by drawing fresh air through it and into a port on the intake manifold. The purging
vacuum is controlled by the EVAP canister purge valve, which operates whenever engine coolant temperature is
above 131°F (55°C).

2004 Acura TSX

2004 ENGINE PERFORMANCE Fuel & Emissions Systems - TSX

Fig. 60: Evaporative Emission (EVAP) System Schematic

2004 Acura TSX

2004 ENGINE PERFORMANCE Fuel & Emissions Systems - TSX

Fig. 61: Evaporative Emission (EVAP) System Wiring Diagram (1 Of 11)

2004 Acura TSX

2004 ENGINE PERFORMANCE Fuel & Emissions Systems - TSX

Fig. 62: Evaporative Emission (EVAP) System Wiring Diagram (2 Of 11)

2004 Acura TSX

2004 ENGINE PERFORMANCE Fuel & Emissions Systems - TSX