2003 Audi Allroad air suspention

it either has a n air leak someplace like shocks or lines or the pup isn't getting called on have this scanned for codes.

is scanning the only way to check the air suspension system?????

if you can hear the pump come on then start checking all around the car for an air leak if car isnot going up . it can be an air line/socks etc. or the pump and as these are run by modules they need to be scanned to see why or if there is something wrong with the system.

how can i manully check the air pump.., can i put power and ground to it

And i guiss if there is a problem with any electrical component like the pump the module shut the system down. is that how it works ????

if you do not have a scanner that has bilateral controls for this car and leveling system you can not fix it the pump is controlled by an ecu so it needs to see why it's screwing up. about the only thing you can check are the fuses 5-7-15-17 in dash and the level controller relay in relay panel. other than what other info I've given you it has to bescanned.

can the esp be reprogrammed without a scanner ????

no a scanner must be used for reprogramming