Circuit Description

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

For circuit description, see Fig 1. For illustration of fuel tank and EVAP canister leak check DTC detection, see Fig 2. For illustration of VSV malfunction DTC detection, see Fig 3.

Fig 1: Circuit Description For DTCs P0441, P0442, P0446 & P0456

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Fig 2: Identifying EVAP Leak Check DTC Detection

Fig 3: Identifying VSV Malfunction DTC Detection