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 angle sensor plug ♦Switch off ignition Check the angle for HBA, front Continue with 2 sensor plug for ♦Pull plug off the angle sensor HBA for moisture for HBA, front and corrosion, or ♦Switch ignition on replace angle sen- ♦Delete the fault memory and sor for HBA, front. read out again. Observe End whether fault code 5 reap- pears. If fault code 5 does not reappear, the supply lead or the angle sensor for HBA, front, is faulty. 2 Check plug on the angle ♦Switch off ignition Continue with 3 Check the angle sensor for HBA, rear sensor plug for ♦Reattach plug to the angle sen- HBA for moisture sor for HBA, front and corrosion, or ♦Pull plug off the angle sensor replace angle sen- for HBA, rear sor for HBA, rear. ♦Switch ignition on End ♦Delete the fault memory and read out again. Observe whether fault code 5 reap- pears. If fault code 5 does not reappear, the plug on the angle sensor for HBA, rear, is faulty. 3 Check 5 V supply voltage ♦Switch off ignition approx. 5 V Continue with 5 of the sensor Continue with 4 ♦Pull plug off the angle sensor for HBA, front ♦Switch ignition on ♦Measure voltage between pin 5 of the sensor plug and ground 4 Check ground lead of the ♦Measure voltage between pin approx. 5 V Continue with 8 sensor 5 and pin 1 of the angle sensor Continue with 9 for HBA, front 5 Check 5 V supply lead ♦Switch off ignition ∞ Ω Repair wiring har- for short to ground Continue with 6 ness ♦Pull plug off the angle sensor End for HBA, rear ♦Pull plug off the control module for HBA ♦Measure resistance between the plug on the control module for HBA pin 14 and ground ♦Measure resistance between the plug on the control module for HBA pin 14 and pin 17 94-11 page 2 9492 Fault code 5 5xxxlw01 Printed in Germany, 2001