Work instruction Display OK If not OK · 7 Replace relay ♦S

911 Turbo (996) Instrument cluster K20 90 Work instruction Display OK If not OK 7 Replace relay ♦Switch off ignition Spoiler extends ⇒ Step 8 →End ♦Replace no. 3 on rear relay carrier ♦Switch on ignition ♦Actuate key "Extend spoiler" 8 Check ground lead relay ♦Disconnect relay no. 9 from < 5 Ω Repair wiring har- no. 9 rear relay carrier ⇒Step 9 ness → End ♦Measure resistance between relay socket no. 9, pin 4 and ground 9 Check relay no. 9 ♦Jumper pin 4 and pin 3 on Spoiler extends ⇒ Step 12 relay no. 9 ⇒ Step16 ♦Relay no. 3 is plugged in ♦Actuate key "Extend spoiler" 10 Check wire between ♦Switch off ignition ∞ Ω Repair wiring har- instrument cluster and ⇒ Step 11 ness ♦Remove connector A from the relay 3 for short to ground → End instrument cluster ♦Measure resistance between relay socket pin 7 and ground 11 Check wire between ♦Measure resistance between < 5Ω Repair wiring har- instrument cluster and relay socket pin 7 and connec- ⇒ Step 19 ness relay 3 for open circuit tor A on the instrument cluster → End pin 7 12 Check power supply of the ♦Switch off ignition Battery voltage Check wiring spoiler drive ⇒ Step 17 between spoiler ♦Insert relay no. 9 drive, relay no. 3 ♦Disconnect connector from the and relay no. 9. spoiler drive → End ♦Switch on ignition ♦Actuate key "Extend spoiler" and at the same time, measure the voltage between connector on spoiler drive pin 1 and ground ♦Actuate key "Extend spoiler" and at the same time measure the voltage between plug on spoiler drive between pin 1 and pin 2 9025 Fault code 9150 90-29 page 3 Printed in Germany – 18, 2002 9150xk20