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Home >> Porsche >> 1987 >> 944 Base, Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 10 >> Left Front Speed Sensor (Internal Resistance)
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Left Front Speed Sensor (Internal Resistance)

  1. Press "VL" button. Digital display should read between 100-1800 ohms. If readout is okay, go to RIGHT FRONT SPEED SENSOR (INTERNAL RESISTANCE) test. If not, go to step 2).
  2. Check internal resistance and continuity between terminals No. 4 and 6 of disconnected control unit plug. Check plug connection. If not okay, replace speed sensor.
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