996 Turbo diagnostic manual — Turbo applicability only / PAGE 687
91 PCM 2 / CDR 23 911 Turbo (996) · Diagnosis/troubleshooting
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91 PCM 2 / CDR 23 911 Turbo (996)
Diagnosis/troubleshooting
Work instruction Display OK If not OK
1 Checking battery ♦Examine battery. Step 2 Charge or replace
battery.
→ End
2 Checking fuse ♦Check amplifier fuse D 9. Step 3 Replace fuse.
→ End
3 Checking input voltage at ♦Switch off ignition. Battery voltage Corrosion in the
pin 30 ♦Pull plug A off the amplifier. Step 4 plug connection or
contact resistance
♦Switch on ignition. in the supply lead.
♦Measure resistance on plug A on Check and repair
amplifier between pin 9 and wiring harness.
ground. → End
4 Checking ground points ♦Measure resistance on plug A on < 0.5 Ω Check ground
amplifier between pin 10 and → End points or repair wir-
ground. ing harness.
→ End
91-91 page 2 9101 8001 Harman external amplifier
8001VSlwl Printed in Germany – 29, 2002
This is a source reference. Confirm exact model applicability in the original material.