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Home >> Porsche >> 2011 >> 911 Speedster >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Radio, Navigation & Pcm Diagnosis - 911 CARRERA (996)) >> System N 01 >> Fault overview >> Test point 6 >> Possible causes, elimination, notes

Possible causes, elimination, notes

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Signal implausible 

  1. Check reversing light switch or, on Tiptronic vehicles, position switch.
  2. Check lead from navigation unit plug pin 4 to the reversing light switch or position switch for short circuit to B+.
NOTE: The lead is routed via plug connection X 2/4 and via the jumper plug 20/1 on relay carrier 2.
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