Test point 9 · Motor of footwell / Diagnosis conditions

911 Carrera (996) Heating diagnosis Test point 9 Motor of footwell / Diagnosis conditions defrost valve No control module fault stored. No fault with supply voltage (5 volts). Signal implausible Fault code 28 Signal implausible 1. Check footwell / defrost valve for smooth operation. 2. Unplug connectorsA, 8, C and D from the heatingjair-conditioning control. 3. Unplugconnector from footwell / defrost valve drive motor. 4. Connectohmmeterto connector C 8 and drive motor connector pin 1. Display: < 5 ,Q Connectohmmeter to connector B 10 and drive motor connector pin 2. Display: < 5 .Q Connectohmmeter to connector A 12 and drive motor connector pin 3, Display: < 5 .0. Connectohmmeter to connector D 11 and drive motor connector pin 4 Display: < 5 .0. Connectohmmeter to connector D 3 and drive motor connector pin 5 Display: < 5 .Q ." 5. Check wire from connector C 8 to drive motor pin 1 for short to B+ and short to ground. 6. Check wire from connector B 10 to drive motor pin 2 for short to B+ and short to ground. 7. Check wire from connector A 12 to drive motor pin 3 for short to B+ 8. Check wire from connector 0 11 to drive motor pin 4 for short to B+ and short to ground. 8 80 01 Diagnosis/troubleshooting, heating 80 -D 25 Printed in Germany -II, 1998 99680Dl -