Work instruction Display OK If not OK · 4 Check relay 9 power ♦S

911 Turbo (996) Instrument cluster K20 90 Work instruction Display OK If not OK 4 Check relay 9 power ♦Switch off ignition Battery voltage Short circuit to supply (rear relay car- ⇒ Step 5 ground/ open cir- ♦Disconnect relay 9 rier) cuit in the wiring ♦Measure voltage between relay between fuse D7 socket pin 5 and ground and relay 3 or from relay no. 3 to relay no. 9 Repair wiring har- ness. → End 5 Check ground lead relay ♦Measure resistance between < 5Ω Repair wiring har- 9 (rear relay carrier) relay socket pin 4 and ground ⇒ Step 6 ness → End ♦Measure resistance between relay socket pin 2 and ground 6 Check control signal ♦Switch on ignition Spoiler key actu- ⇒ Step 10 from instrument cluster ♦Actuate key "Retract spoiler" ated to relay carrier battery voltage and at the same time measure ⇒ Step 7 the voltage between connector on relay socket pin 7 and ground 7 Replace relay ♦Switch off ignition Spoiler not retract- ⇒ Step 8 ♦Replace no. 9 on rear relay ing →End carrier ♦Switch on ignition ♦Actuate key "Retract spoiler" 8 Check ground lead relay ♦Disconnect relay no. 3 from < 5 Ω Repair wiring har- no. 3 rear relay carrier ⇒ Step 9 ness → End ♦Measure resistance between relay socket no.3, pin 4 and ground 9 Check relay no. 3 ♦Jumper pin 4 and pin 3 on Spoiler retracting ⇒ Step 12 relay no. 3 ⇒ Step 16 ♦Relay no. 9 is plugged in ♦Actuate spoiler key "Retract spoiler" 10 Check wire between ♦Switch off ignition ∞ Ω Repair wiring har- instrument cluster and ⇒ Step 11 ness ♦Remove connector A from the relay no. 9 for short to → End instrument cluster ground ♦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 no. 9 for open cir- tor A on the instrument cluster → End cuit pin 23 9025 Fault code 9150 90-29 page 5 Printed in Germany – 18, 2002 9150xk20