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Home >> Porsche >> 2003 >> 911 Carrera 4S, Standard >> Repair and Diagnosis >> Brakes >> Anti-Lock Brakes >> Anti-Lock Brake System (Abs) - 5.3 & Abs/TC 5.3, Diagnosis - 911 CARRERA (996) >> ABS 5.3 and ABS/TC 5.3 systems >> Fault overview / troubleshooting (diagnosis / test plan) >> Test point 15 >> Possible causes, elimination, notes

Possible causes, elimination, notes

Normally, this fault occurs only when the engine is started in combination with a discharged battery.

  1. Pull off the control module connector and measure the voltage between PIN 15 (plus) and PIN 19 (ground).

    Nominal value: Vehicle voltage. 

  2. Check wiring and ground point in combination with the wiring diagram.
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