Fault code 58: 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 58)

Work instruction			Display OK	If not OK
1	Check wire between ground point 7 and alarm system control module for open circuit.	Switch off the ignition. Pull plug B off the alarm system control module. Measure resistance between plug B pin 1 and ground.	< 5 Step 2	Repair wiring harness. ->End
2	Check wiring from the switching element for the filler flap to the alarm system control module for short circuit to ground.	Pull plug off switching element for filler flap. Measure resistance between plug B on alarm system control module pin 5 and ground. Measure resistance between plug B on alarm system control module pin 10 and ground.	Step 3	Repair wiring harness. ->End
2	Check wiring from the switching element for the filler flap to the alarm system control module for open circuit.	Measure resistance between plug B on alarm system control module pin 5 and pin 2 on plug of switching element for filler flap. Measure resistance between plug B on alarm system control module pin 10 and pin 1 on plug of switching element for filler flap.	< 5 Step 3	Repair wiring harness. ->End
3	Check output signal of the alarm system control module.	Select Filler flap in the "Drive links" menu item. Perform a drive link test and simultaneously measure the voltage on the plug of the switching element for the filler flap, pins 1 and 2.	A short voltage pulse can be measured with the digital multimeter. Step 4	Step 5
4	Replace switching element for filler flap.		->End
5	Replace control module.		->End