8020 Navigation: Diagnosis/troubleshooting

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2004 Porsche Boxster, 2003 Porsche Boxster, 2002 Porsche Boxster, 2001 Porsche Boxster, and 2000 Porsche Boxster. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSIS/TROUBLESHOOTING - 8020 NAVIGATION

Work instruction			Display OK	If not OK
1	Antenna wiring to the GPS antenna	Connect the Porsche System Tester II 9588 to the diagnostic socket; switch on the ignition and the Porsche System Tester II 9588 Select 986 as the vehicle type and start the automatic control module search In the Control units menu, select PCM2 In the PCM2 menu, select External amplifier Make a selection in the Fault memory menu and start with the ">>" key Read out fault memory Erase fault memory Remove ignition key and switch on ignition again Read out fault memory Extract ambient data, press the ">>" key	-> End	Fault code is still displayed
2	Check antenna wiring to the GPS antenna	Switch off ignition Pull off antenna on the navigation module Check resistance on plug I to ground	Step 3	Short circuit to ground; Repair wiring harness -> End
3	Check antenna wiring to the GPS antenna	Switch ignition on Measure voltage on plug I to ground	< 1 V Step 4	Short circuit to B+; Repair wiring harness -> End
4	Replace GPS antenna		-> End	Step 5
5	Replace navigation module		-> End	Step 6
6	Replace PCM2		-> End	-