80-10Fault code 24 · Supply voltage (terminal 15) - voltage too high/ too

911 Turbo (996) Air conditioning H01, H02 80 80-10Fault code 24 Supply voltage (terminal 15) - voltage too high/ too low Diagnostic conditions • Ignition on Note! No control module fault stored Possible cause of fault ♦Low battery positive voltage ♦Generator faulty Affected terminals Plug D, terminals 9 and 15 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check battery. ⇒ Step 2 Charge or replace battery → End 2 Check the generator. ♦Check generator voltage ⇒ Step 3 Replace generator approx. 13 to 14 V when engine → End is running. 3 Check contact resistance ♦Switch off ignition Battery voltage Check wiring har- of wire connections. → End ness for fuse E7. ♦Remove plug D from the air-con- Check wiring har- ditioning system regulator ness for ground ♦Switch on ignition point 4. ♦Measure voltage between plug → End D, air-conditioning system regu- lator pin 9 and ground ♦Measure voltage between plug D, air-conditioning system regu- lator pin 7 and ground ♦Measure voltage between plug D, air-conditioning system regu- lator pin 9 and pin 15 8001 Fault code 24 80-10 page 1 Printed in Germany – 15, 2001 24xxxh02