Instrument cluster K20 911 Turbo (996)90 · Diagnosis/troubleshooting

Instrument cluster K20 911 Turbo (996)90 Diagnosis/troubleshooting Work instruction Display OK If not OK 1 Perform a drive-link test ♦Select the menu item "pointer" in The oil pressure indi- ⇒ Step 7 the drive links menu item cator is controlled to the top value and ♦Perform the drive-link test with then onto value 0 the key F8 and observe the ⇒ Step 2 movement of the oil pressure indicator 2 Check output voltage of ♦Disconnect wire to Pin G of the approx. 5 V ⇒ Step 3 the instrument cluster sensor for the oil pressure indi- ⇒ Step 6 cator ♦Switch on ignition ♦Measure voltage between pin G and ground 3 Check wire between ♦Switch off ignition ∞ Ω Repair wiring har- instrument cluster and ⇒ Step 4 ness ♦Pull plug B off the instrument sensor for oil pressure → End cluster indicator for short to ♦Measure resistance between ground plug B on instrument cluster pin 5 and ground 4 Check wire between ♦Switch on ignition 0 V Repair wiring har- instrument cluster and ⇒ Step 5 ness ♦Measure voltage between plug B sensor for oil pressure → End on instrument cluster pin 5 and indicator for short to B+ ground 5 Check wire between ♦Switch off ignition < 5Ω Repair wiring har- instrument cluster and ⇒ Step 7 ness. ♦Measure resistance between sensor for oil level indica- → End plug B on the instrument cluster tor for open circuit pin 5 and plug on the sensor of oil pressure indicator, pin G 6 ♦Replace oil pressure indicator → End 7 ♦Replace instrument cluster → End 90-15 page 2 9025 Fault code 9121 9121xk20 Printed in Germany – 8, 2001