5. If no fault can be detected on the wiring harness, reattach the plug · to the alarm control module and the airbag control modu

911 Carrera (996) Alarm system diagnosis 5. If no fault can be detected on the wiring harness, reattach the plug to the alarm control module and the airbag control module. 6. Switch on the ignition and clear the fault memory of the alarm system. If the fault no longer occurs, the DME control module is faulty. If the fault occurs again, detach the plug on the airbag control module. 7. Clear the fault memory of the airbag system, If the fault no longer occurs, the airbag control module is faulty. If the fault occurs again, the alarm system control module is faulty. Test point 18 Power window control 1. Pull off plug I on the alarm control module. Short to ground 2. Pull off plug I on the convertible top control module Fault code 18 3. Ohmmeter on alarm control module plug I pin 18 and ground. Display: 00.0. If display < 5 .0., check wiring harness for chafing and pinching damage. Test point 19 Status lead, 1. Pull off plug I on the alarm control module. signal converter 2. Pull off the plug on the signal converter for the transponder. Short to B+ Fault code 19 3. Voltmeter at plug I alarm control module pin 12 and ground, Switch ignition on. Display:a Volt If battery voltage is displayed, check the wiring harnessfor pinches and chafing damage. 90 -D 37