91PCM2/CDR23 · (External Harman amplifier)

911 Turbo (996) PCM2/CDR23 91 91PCM2/CDR23 (External Harman amplifier) 91-85Introduction – external Harman amplifier The manual contains the diagnosis for the following system: External Harman amplifier 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. ♦After the battery has been connected, the instructions in the assembly 9; Rep. Gr. - ; Work instructions after disconnecting the battery must be observed. ♦Deactivate the 'automatic traffic announcement' before begin- ning the diagnosis on the PCM2. If this is not done, the system will crash (applies only to version < 03). ♦When working on the optical waveguide, please observe the instructions in assembly 9; Rep. Gr. 9768; Optical waveguide - MOST bus. ♦After troubleshooting or repairs, erase the fault memory with the 9588 Porsche System Tester II and carry out a test drive. ♦After the test drive, read out the fault memory with the 9588 Porsche System Tester II again. Danger! Danger of injury through triggering of driver's airbag • 9588 Never hang the Porsche System Tester II over the steering wheel. Caution! Danger of damage due to improper handling of the battery and the control module connectors! • Never disconnect battery with engine running. 9101 Introduction – external Harman amplifier 91-85 page 1 Printed in Germany – 43, 2003 EINVSlwl