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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Anti-Theft Systems >> Lights, Lamps, Switches Interior, Theft Protection Diagnosis - 911 CARRERA (996) >> Fault code 59 >> Diagnosis/troubleshooting

Fault code 59: Diagnosis/troubleshooting

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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