Electrical problem
2002 Saturn L200 4 cyl Front Wheel Drive Automatic 100000 miles
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I can open trunk with ket or remote control key but I can't open with push button left side of dash to open trunk.

Trunk open sign is illuminated in cluster.

Push buttom is OK with light tester.

Diode in left side fuse box is Ok with Ohm meter

Light turns on inside trunk when trunk opens.

Measured 12.4 volts at solenoid wiring in trunk beween black and red color.

What else neede to be checked ?

How should I check solenoid for functioning ?