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 Check CAN bus leads, ♦Switch off ignition ∞ Ω Repair wiring har- CAN-high and CAN-low for ⇒ Step 2 ness ♦Pull plug A off the instrument short circuit. → End cluster ♦Pull plug off the air-condioning control module ♦Measure resistance on plug A of the instrument cluster between pin 14 and pin 30 2 Check CAN bus lead, ♦Measure resistance between ∞ Ω Repair wiring har- CAN-high for short to plug A on instrument cluster pin ⇒ Step 3 ness ground 14 and ground → End 3 Check CAN bus lead, ♦Switch on ignition 0 V Repair wiring har- CAN-low for short to B+ ⇒ Step 4 ness ♦Measure voltage between plug A → End on instrument cluster pin 30 and ground 4 Replace faulty control ♦Switch off ignition Fault has been reme- The fault is still module died present ⇒ Step 6 ♦Reattach the plugs on instru- ⇒Step 5 ment cluster ♦ Read out fault memory from instrument cluster and check whether the fault has been reme- died. 5 ♦Replace the air-conditioning system control module. → End 6 ♦Replace instrument cluster → End 90-8 page 2 9025 Fault code 9102 9102xk20 Printed in Germany – 8, 2001