94Headlight beam adjustment HBA 01 · 94-1Introduction

911 Turbo (996) Headlight beam adjustment HBA 01 94 94Headlight beam adjustment HBA 01 94-1Introduction The manual contains the diagnosis for the following system: HBA 01 (headlight beam adjustment) General instructions / safety instructions The following points must be observed during vehicle diagnosis: ♦After the battery is connected, volatile memories must be repro- grammed. In the case of radio coding and tuning, the customer must be informed of decoding and the deleted tuner memory. ♦The coding, calibration and headlight adjustment must be observed after a HBA control module or an angle sensor for HBA has been replaced, or the running gear has been modified. ♦After troubleshooting or repairs, erase the fault memory with the Porsche System Tester 2 and carry out a test drive. ♦After the test drive, read out the fault memory with Porsche Sys- tem Tester 2 again. Caution! • • • General information on the fault memory Fault code setting conditions Fault codes can be set in several circumstances, e.g.: ♦Power failure ♦Plug connections disconnected In these circumstances, no fault is present in the system and the fault memory must be erased. 9492 Introduction 94-1 page 1 Printed in Germany, 2001 ein_lw01