Compressor temperature

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.

Fig 1: Temperature Versus Resistance Graph

Courtesy of PORSCHE OF NORTH AMERICA, INC.

DIAGNOSIS/TROUBLESHOOTING PROCEDURE

Work instruction			Display OK	If not OK
1	Check compressor temperature sensor	Switch off ignition. Pull plug B off level control module. Measure resistance on level control module plug B between 'pins 85 and 93'.	12.2 - 13.72 Ω at 20°C or see 'COMPRESSOR TEMPERATURE ' diagram Go to Step 2	Replace level control system compressor. → End
2	Check wiring between level control system compressor and level control module for short circuit to ground	Switch off ignition. Measure resistance between level control module plug B 'pins 85, 93' and ground.	∞ Ω Go to Step 3	Repair or replace wiring harness. → End
3	Check wiring between level control system compressor and level control module for short circuit with respect to each other	Measure resistance on level control module plug B between 'pin 85' and 'pin 93'.	∞ Ω Go to Step 4	Repair or replace wiring harness. → End
4	Replace level control module		→ End