Selector switch (level control module): Diagnosis/troubleshooting

WARNING: This page is about a different car, the 2006 Porsche Cayenne, 2005 Porsche Cayenne, 2004 Porsche Cayenne, and 2003 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSIS/TROUBLESHOOTING PROCEDURE

Work instruction			Display OK	If not OK
1	Check wiring between level control system control module and level control module for short circuit to B+:	Switch off ignition. Pull plug A off level control module. Pull plug off level control system control module. Switch on ignition. Measure voltage between level control module plug A 'pin 46' and ground.	< 0.3 V Go to Step 2	Repair or replace wiring harness. → End
2	Check wiring between level control system control module and level control module for short circuit to ground:	Switch off ignition. Measure resistance between level control module plug A 'pin 46' and ground.	∞ Ω Go to Step 3	Repair or replace wiring harness. → End
3	Check wiring between level control system control module and level control module for open circuit:	Measure resistance between level control module plug A 'pin 46' and level control system control module 'pin 7'.	< 5 Ω Go to Step 4	Repair or replace wiring harness. → End
4	Check selector switch:	Use the 'Input signals' menu item in the 9588 Porsche System Tester II to check the values for 'Up switch, Down switch, shock-absorber adjustment switch, Normal level LED and Low level LED'.	→ End	Go to Step 5
5	Replace selector switch.		→ End	Go to Step 6
6	Replace level control module.		→ End