Overall Function Check

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

NOTE: Use this procedure to check the overall function of vacuum cut valve bypass valve. During this check, the 1st trip DTC might not be confirmed.

For overall function check, see Fig 1.

Fig 1: Identifying Overall Function Check For DTC P1491: Vacuum Cut Valve Bypass Valve

Courtesy of NISSAN MOTOR CO., U.S.A.