A standard ODB reader is unlikely to help trace your SRS issue, they're fine for general ECU related items but they won't read SRS or ABS codes.
You're issue could be the rotary coupler on the steering wheel, these can fail on one or more circuits. If you're handy with a multimeter you can test these but it would be easiest to remove it to do this. If you do remove it, it's best to lock it in position to ensure it's replaced in the same orientation.
The easiest way to diagnose it is with a Pscan pscan.uk - Diagnostic tool for Rover, MG and Landrover cars this will show you exactly what the SRS system thinks is at fault.
You're issue could be the rotary coupler on the steering wheel, these can fail on one or more circuits. If you're handy with a multimeter you can test these but it would be easiest to remove it to do this. If you do remove it, it's best to lock it in position to ensure it's replaced in the same orientation.
The easiest way to diagnose it is with a Pscan pscan.uk - Diagnostic tool for Rover, MG and Landrover cars this will show you exactly what the SRS system thinks is at fault.
