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8001 External Harman amplifier: Diagnosis/troubleshooting

DIAGNOSIS/TROUBLESHOOTING - 8001 EXTERNAL HARMAN AMPLIFIER

Work instruction Display OK If not OK
1 Check battery
  • Examine battery
Step 2 Charge or replace battery
-> End
2 Check fuse
  • Check amplifier fuse D 9
Step 3 Replace fuse
-> End
3 Check input voltage at pin 30
  • Switch off ignition
  • Pull off plug A on the amplifier
  • Switch on ignition
  • Measure voltage on plug A of amplifier between pin 9 and ground
Battery voltage
Step 4
Corrosion in the plug connection or contact resistance in the supply lead. Check and repair wiring harness
-> End
4 Check ground points
  • Measure resistance on plug A of amplifier between pin 10 and ground
< 0.5
-> End
Check ground points or Repair wiring harness.
-> End