96-24Fault code 18 · Power window control, short circuit to ground

911 Turbo (996) Alarm system I 48 96 96-24Fault code 18 Power window control, short circuit to ground Diagnostic conditions • Power window button actuated Possible cause of fault ♦Short circuit to ground/open circuit between alarm system con- trol module and power window motors Affected terminals Plug A, terminal 18 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check the wire from the ♦Switch off ignition ∞ Ω Repair wiring har- alarm system control ⇒ Step 2 ness ♦Pull plug A off the alarm system module to the switch for → End control module power windows for short ♦Pull plug off switch for sliding to ground. roof ♦Pull plug off switch for power windows ♦Measure resistance between plug A on alarm system control module pin 18 and ground 2 Check the wire from the ♦Measure resistance between < 5 Ω Repair wiring har- alarm system control plug A on the alarm system con- ⇒ Step 3 ness module to the switch for trol module pin 18 and plug pin → End power windows for open 4 on the switch for power win- circuit dows 3 Check wiring from the ♦Pull plug off the power window ∞ Ω Repair wiring har- switch for power windows motor on the right and left ⇒ Step 4 ness to the power window → End ♦Measure resistance between pin motors on the right and 1 of each switch for power win- left for short circuit to dows and ground ground ♦Measure resistance between pin 2 of each switch for power win- dows and ground 9601 Fault code 18 96-24 page 1 Printed in Germany – 4, 2001 18xxxi48