Year of Manufacture *: 2005
Engine Code or CC *: 1.7 CDTI
I have got a customer with an Astra with typical alternator type problems (i.e light on / no charging etc). I replaced the alternator and the problem seemed to go away. I have now got the customer back with exactly the same symptoms. I have plugged it into the scanner and I am getting several spirious codes. After investigating and erasing 'Code P0621' Alternator warning lamp - Circuit malfunction remains. When I start the vehicle the light comes on and goes off again as normal, but no charge going to battery. Checked for bad connections / water ingress etc, bypassed alternator return system to battery to eliminate wiring but problem still persists. If left ticking over alternator light comes on and engine cuts out. Rev counter works and light works, so I assume new alternator is ok?! If anyone has come across this before please help.
Thanks very much.
Sam
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