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Home >> Chrysler >> 1990 >> Imperial >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - BOSCH Abs-3 >> Testing >> System Precautions

System Precautions

  1. DO NOT unplug or plug in ABCM connector with ignition on. Depressurize hydraulic assembly, by depressing brake pedal 25 times or more with ignition switch in OFF position, before disconnecting any hydraulic brake component (including brake lines).
  2. Unplug ABCM and sensor block connectors before using an arc welder on vehicle. When painting vehicle, ABCM and sensor block should be insulated or removed before placing vehicle in oven.
  3. Visually inspect ABS system before performing any test. Ensure hydraulic system, normal brake system, charging system and battery are okay. Low battery voltage can cause faulty reading. If necessary, connect a battery charger and apply slow charge. DO NOT fast charge battery.
  4. Ensure parking brake switch, all related electrical wiring, electrical connections and electrical grounds are visually okay.
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