The system check light in Suzuki Grand Vitara X-port comes on and off every few days. The only symptom I noticed is, the cruise control stops working. The diagnosis error code is PO2631. What does tha

SOURCE: An emission control sys. indicator has arised (Grand vitara 2005)

To know what it exactly is, you need a code scanner hooked to it.
If there is an autozone near you, go there, tell them the engine light is on and you need the code, takes about 30 seconds. They don't charge, where other places do. Without that code you'll be replacing things you don't need to. There is other sensors in the emission system other than the 02 sensors.

SOURCE: engine warning light stays on my suzuki grand

It means there is a fault stored in the computer memory that needs to be identified and fixed.
Have the code read or take it to advance auto and they will lend you the reader so you can plug into the diagnostic port under the dash and read the code.
The code reader can then be used to reset the check engine light and turn it off.

SOURCE: 2002 Grand Vitara engine light

Try these easy things...take off clean and reconnect the battery cables, take to Auto Zone for a FREE computer hook up. More than likely if the battery hook up doesn't work it's the oxygen sensor.

SOURCE: P0340 CODE

check your timing chain and see if your engine has a tensioner as that may have failed. chain may be just a lil loose

SOURCE: can't find the fuse box under the driver's side dash on my 2000 suzuki grand vitara. my radio/clock not working and dome light does not come on when the driver's side door is opened.

Its below the Dashboard, on the left side of your knee. You have to use a torch & locate it from under the Dashboard, Its roughly near to the Clutch Pedal.
Here, it looks like this: (The Black one is the Fuse box)