90-16Fault code 9122 · Tank-fill level

911 Turbo (996) Instrument cluster K20 90 90-16Fault code 9122 Tank-fill level Diagnostic conditions • Ignition on Possible cause of fault ♦Sensor for fuel level faulty ♦Short circuit to voltage/ground or open circuit in the wiring between the sensor for fuel level and instrument cluster Affected terminals Plug B, terminals 4 and 20 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check sensor for fuel ♦Switch off ignition Depending on tank ⇒ Step 6 level contents between ♦Pull plug off sensor for fuel level 10 Ω and 310 Ω ♦Measure resistance on sensor ⇒ Step 2 for fuel level (pin side) between pin 2 and pin 3 2 Check output voltage of ♦Switch on ignition approx. 5 V ⇒ Step 3 the instrument cluster ⇒ Step 6 ♦Measure voltage on plug of sen- sor for fuel level between pin 2 and pin 3 3 Check wiring between ♦Switch off ignition ∞ Ω Repair wiring har- sensor for fuel level and ⇒ Step 4 ness ♦Pull plug B off the instrument instrument cluster for → End cluster short to ground ♦Measure resistance on plug B of the instrument cluster between pin 4 and ground ♦Measure resistance on plug B of the instrument cluster between pin 20 and ground 4 Check wiring between ♦Switch on ignition 0 V Repair wiring har- sensor for fuel level and ⇒ Step 5 ness ♦Measure voltage between plug B instrument cluster for → End on instrument cluster pin 4 and short to B+ ground ♦Measure voltage between plug B on instrument cluster pin 20 and ground 9025 Fault code 9122 90-16 page 1 Printed in Germany – 11, 2001 9122xk20