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Fault code 59: 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 59)

Work instruction Display OK If not OK
1 Check fuse C3.
  • Pull off and check fuse C3.
 Fuse C3 OK.
Step 2		 Replace fuse C3.
->End
2 Check wire from ground point 7 to the alarm system control module for open circuit.
  • Switch off the ignition.
  • Pull plugs A and Boff the alarm system control module.
  • Measure resistance between plug B on alarm system control module pin 1 and ground.
 < 5
Step 3		 Repair wiring harness.
->End
3 Check wiring from the alarm system control module to the servomotors for short circuit to ground.
  • Pull plugs off both door locks.
  • Measure resistance between plug B on alarm system control module pin 9 and ground.
 Step 4 Repair wiring harness.
->End
4 Check wiring from the alarm system control module to the servomotors for open circuit.
  • Measure resistance between plug B on alarm system control module pin 9 and pin 2 on plug of door lock (driver's side/passenger's side).
 < 5
Step 5		 Repair wiring harness.
->End
5 Check wiring from the alarm system control module to the servomotors for short circuit to ground.
  • Measure resistance between plug A on alarm system control module pin 19 and ground.
 Step 6 Repair wiring harness.
->End
6 Check wiring from the alarm system control module to the servomotors for open circuit.
  • Measure resistance between plug A on alarm system control module pin 19 and pin 9 on plug of door lock (driver's side/passenger's side).
 < 5
Step 7		 Repair wiring harness.
->End
7 Check wiring from the alarm system control module to the door locks for short circuit to ground.
  • Measure resistance between plug A on alarm system control module pin 5 and ground.
  • Measure resistance between plug A on alarm system control module pin 28 and ground.
 Step 8 Repair wiring harness.
->End
8 Check wiring from the alarm system control module to the door locks for open circuit.
  • Measure resistance between plug A on alarm system control module pin 5 and pin 7 on plug of door lock on driver's side.
  • Measure resistance between plug A on alarm system control module pin 28 and pin 7 on plug of door lock on passenger's side.
 < 5
Step 9		 Repair wiring harness.
->End
9 Check output signals of the control module.
  • Connect 88-pin test adapter cable 9616 and 42-pin test adapter cable 9617 to the alarm system control module.
  • Reconnect plugs to both door locks.
  • Switch on ignition.
  • Select Secure doors in the "Drive links" menu item.
  • Carry out a drive link test and simultaneously measure the voltage on the 88-pin test adapter cable 9616, pin 19 and ground.
 A voltage pulse can be measured with the digital multimeter.
Step 10		 Step 11
10
  • Replace door lock.
 ->End
11
  • Replace alarm system control module.
 ->End
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