96-13Fault code 7 · Central locking button closed, short circuit to B+

911 Turbo (996) Alarm system I 48 96 96-13Fault code 7 Central locking button closed, short circuit to B+ Diagnostic conditions • Central locking button actuated Possible cause of fault ♦Short circuit to voltage in the wiring between the alarm system control module and the central locking switch Affected terminals Plug A, terminal 29 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check central locking ♦Switch off ignition 0 V Repair wiring har- switch ⇒ Step 2 ness ♦Pull plug A off the control mod- → End ule ♦Pull plug off central locking switch ♦Switch on ignition ♦Measure voltage between plug A on alarm system control module pin 29 and ground 2 Check central locking ♦Measure resistance between approx. 180 Ω at 20 Replace resistor or switch pins 1 and 2 of plug for central °C repair wiring har- locking switch ⇒ Step 3 ness → End 3 Check operating points of ♦Measure resistance between Central locking ⇒ Step 5 central locking switch pins 3 and A1 on central locking switch not actuated → End switch in "open" direction ∞ Ω ♦Measure resistance between Central locking pins 4 and 2 on central locking switch actuated in switch "open" direction < 5 Ω ⇒ Step 4 9601 Fault code 7 96-13 page 1 Printed in Germany – 4, 2001 7xxxxi48