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Fault code 45: Diagnosis/troubleshooting

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Porsche 911, 2004 Porsche 911, 2003 Porsche 911, 2002 Porsche 911, and 2001 Porsche 911. However, it is still accessible from the selected car via links, so may be relevant.
DIAGNOSIS/TROUBLESHOOTING (FAULT CODE 45)

Work instruction Display OK If not OK
1 Check wiring from the alarm system control module to the door locks for short circuit to B+.
  • Pull plug off the two door locks.
  • Pull plugs A and B off the alarm system control module.
  • Switch on ignition.
  • Measure voltage between plug B on alarm system control module pin 3 and ground.
  • Measure voltage between plug B on alarm system control module pin 9 and ground.
 0 V
Step 2		 Repair wiring harness.
->End
2 Check servomotors for left door lock.
  • Switch off the ignition.
  • Reconnect plug to left door lock.
  • Disconnect plug connection X 11.
  • Measure resistance on plug connection X 11 (sleeve side) between pins 11 and 17.
  • On vehicles with Safe position: Measure resistance on plug connection X 11 (sleeve side) between pins 11 and 24.
 5 - 7 at 20 °C.
Step 3		 Replace left door lock.
->End
3 Check servomotors for right door lock.
  • Reconnect plug to right door lock.
  • Disconnect plug connection X 12.
  • Measure resistance on plug connection X 12 (sleeve side) between pins 11 and 17.
  • On vehicles with Safe position: Measure resistance on plug connection X 12 (sleeve side) between pins 11 and 24.
 5 - 7 at 20 °C.
Step 4		 Replace right door lock.
->End
4
  • Replace alarm system control module.
 ->End
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