96-45Fault code 40 · Signal converter coil fault

911 Turbo (996) Alarm system I 48 96 96-45Fault code 40 Signal converter coil fault Diagnostic conditions • Ignition on Possible cause of fault ♦Short circuit to voltage/ground or open circuit in the wiring between the transponder coil and the signal converter Affected terminals Plug on signal converter, terminals 1 and 2 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check the transponder ♦Pull plug off the signal converter 20 - 25 Ω at 20 °C coil ⇒ Step 2 → Step 5 ♦Measure resistance on plug of the signal converter between pin 1 and pin 2 2 Check wiring from trans- ♦Pull plug off transponder coil ∞ Ω Repair wiring har- ponder coil to signal con- ⇒ Step 3 ness ♦Measure resistance between verter for short circuit to → End plug on transponder coil pin 1 ground and ground ♦Measure resistance between plug on transponder coil pin 2 and ground 3 Check wiring from trans- ♦Measure voltage between plug 0 V Repair wiring har- ponder coil to signal con- on transponder coil pin 1 and ⇒ Step 4 ness verter for short circuit to ground → End B+ ♦Measure voltage between plug on transponder coil pin 2 and ground 4 Check wiring from trans- ♦Measure resistance between ⇒ Step 6 Repair wiring har- ponder coil to signal con- plug on transponder coil pin 1 ness verter for open circuit and plug on signal converter pin → End 1 ♦Measure resistance between plug on transponder coil pin 2 and plug on signal converter pin 2 9601 Fault code 40 96-45 page 1 Printed in Germany – 4, 2001 40xxxi48