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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 2 >> Further to test 1

Further to test 1

To perform the test, manually rotate the left front wheel at a speed of approx. 2 - 3 km/h (observe display in the Tester screen). Slowly increase the speed and simultaneously observe the speed increase (display).

Nominal values/required display

Speed steps of approx. 0.06 km/h. First display at 1.81 km/h. This means: From the value measured last, the next value must be 0.06 km/h higher or, if the wheel is rotating slower, must be 0.06 km/h lower.The Tester rounds the value down to 0.05 km/h or up to 0.07 km/h in some cases.

Example 

MEASURED VALUE - EXAMPLE

First measured value = 1.81 km/h
Second nominal value = 1.87 km/h
Third nominal value = 1.93 km/h etc.
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