96-54Fault code 49 · Diagnostic conditions

911 Turbo (996) Alarm system I 48 96 96-54Fault code 49 K lead Diagnostic conditions • Ignition on Possible cause of fault ♦K lead connected to ground for at least 2 seconds after ignition is switched on Affected terminals Plug A, terminal 2 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check the wire from data ♦Pull plug A off the alarm system ∞ Ω Repair wiring har- link connector to alarm control module ⇒ Step 2 ness system control module → End ♦Measure resistance between for short circuit to ground plug A on alarm system control module pin 2 and ground 2 Check the wire from data ♦Switch on ignition 0 V Repair wiring har- link connector to alarm ⇒ Step 3 ness ♦Measure voltage between plug A system control module → End on control module pin 2 and for short circuit to B+ ground 3 Check the wire from the ♦Switch off ignition < 5 Ω Repair wiring har- data link connector to the ⇒ Step 4 ness ♦Measure resistance between alarm system control → End plug A on control module pin 2 module for open circuit and pin 7 on the data link con- nector 4 ♦Replace control module → End 9601 Fault code 49 96-54 page 1 Printed in Germany – 4, 2001 49xxxi48