Headlight beam adjustment HBA 01 911 Turbo (996)94 · Diagnosis/Troubleshooting

Headlight beam adjustment HBA 01 911 Turbo (996)94 Diagnosis/Troubleshooting Work instruction Display OK If not OK 1 Check for short to ground ♦Switch off ignition ∞ Ω Repair wiring har- in the supply lead to the Continue with 2 ness ♦Pull plug off the control module servomotor for HBA, left End ♦Pull plug off the headlight (remove headlight) ♦Measure resistance between the plug on the headlight pin 7 and ground ♦Measure resistance between the plug on the headlight pin 8 and ground ♦Measure resistance between the plug on the headlight pin 9 and ground ♦Measure resistance between the plug on the headlight pin 10 and ground 2 Check for open circuit in ♦Measure resistance between the < 5 Ω Repair wiring har- the supply lead to the ser- plug on the control module pin 1 Continue with 3 ness vomotor for HBA, left and the plug on the headlight pin End 9 ♦Measure resistance between the plug on the control module pin 2 and the plug on the headlight pin 10 ♦Measure resistance between the plug on the control module pin 3 and the plug on the headlight pin 7 ♦Measure resistance between the plug on the control module pin 4 and the plug on the headlight pin 8 3 ♦If no fault is detected in the wires, replace the servomotor End for HBA, left. 94-7 page 2 9492 Fault code 1 1xxxlw01 Printed in Germany, 2001