90-18Fault code 9124 · Sun sensor, short circuit ground/ B+

911 Turbo (996) Instrument cluster K20 90 90-18Fault code 9124 Sun sensor, short circuit ground/ B+ Diagnostic conditions • Ignition on Possible cause of fault ♦Short circuit to voltage/ground or open circuit in the wiring between the sun sensor and the instrument cluster ♦Sun sensor faulty Affected terminals Plug B, terminals 3 and 19 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Check output voltage of ♦Switch off ignition approx. 5 V ⇒ Step 2 the instrument cluster ⇒ Step 5 ♦Pull plug off the sun sensor ♦Switch on ignition ♦Measure voltage on plug of sun sensor between pin 2 and pin 3 2 Check wire between sun ♦Pull plug B off the instrument ∞ Ω Repair wiring har- sensor and instrument cluster ⇒ Step 3 ness cluster for short to → End ♦Pull plug off the control module ground ♦Measure resistance between plug B on instrument cluster pin 3 and ground 3 Check wiring between sun ♦Switch on ignition 0 V Repair wiring har- sensor and instrument ⇒ Step 4 ness ♦Measure voltage between plug B cluster for short to B+ → End on instrument cluster pin 3 and ground ♦Measure voltage between plug B on instrument cluster pin 19 and ground 9025 Fault code 9124 90-18 page 1 Printed in Germany – 8, 2001 9124xk20