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Home >> Porsche >> 1990 >> 928 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 10 >> Right Rear Speed Sensor (Internal Resistance)

Right Rear Speed Sensor (Internal Resistance)

  1. Press "HR" button. Digital display should read between 800-1800 ohms. If readout is okay, go to PROGRAM SWITCH POSITION 11  . If not, go to step 2).
  2. Check internal resistance and continuity between terminals No. 24 and 26 of disconnected control unit plug. Check plug connection. If not okay, replace speed sensor.
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