9. Check Control Valve

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Disassemble control valve assembly. Refer to "CONTROL VALVE ASSEMBLY ".
Check Line Pressure circuit valves for sticking.

Pressure regulator valve
Pilot valve
Pressure modifier valve

Fig 1: Checking Control Valve
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK : GO TO 10.
NG : Repair control valve.