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Home >> Porsche >> 1985 >> 944 Automatic >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System >> Testing >> Program Switch Position 6 >> Rear Axle Control Valve (Internal Resistance)

Rear Axle Control Valve (Internal Resistance)

  1. Press "HA" button. Display should read between .7-1.7 ohms. If display is okay, go to PROGRAM SWITCH POSITION 7  . If not, go to step 2).
  2. Check internal resistance and continuity between terminals No. 18 and 32 on disconnected control unit plug. Repeat test between terminals No. 4 and 5 on hydraulic unit. If not okay, replace hydraulic unit and repeat test.
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