91-12Fault code 6 · Sensor supply voltage < 6.7 V

911 Turbo (996) ParkAssist P02 91 91-12Fault code 6 Sensor supply voltage < 6.7 V Diagnostic conditions • Ignition on • Reverse gear engaged • Continuous fault tone emitted for 0.5 seconds after engaging reverse gear Possible cause of fault ♦Low vehicle voltage ♦Short circuit in supply leads to the control module ♦Faulty sensor ♦Faulty control module Affected terminals Terminals I/5 and I/7 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Visual inspection ♦Check sensors for external dam- Replace sensor. age. Step 2 → End 2 Check supply voltage of ♦Select Sensor supply voltage in Approx. 8 V the sensors the Actual values menu item. → End Step 3 3 Check supply lead of the ♦Switch off ignition. Approx. 8 V sensors Step 4 Step 5 ♦Pull off plugs on all sensors. ♦Engage reverse gear. ♦Switch on ignition. ♦Measure voltage on all sensor plugs at pin 3 and ground respectively. ♦Measure voltage on all sensor plugs at pins 3 and 2 respec- tively. 9101 Fault code 6 91-12 page 1 Printed in Germany – 42, 2003 6xxxxp02