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Ignition Switch Does Not Activate Brake Warning Light

  1. Turn ignition on. Set parking brake. If brake warning light comes on, go to next step. If brake warning light does not come on, go to BRAKE WARNING LIGHT INOPERATIVE.
  2. Release parking brake. Connect fused jumper wire between ground and Light Blue wire at 48-pin connector between ignition switch and parking brake warning switch. Turn ignition on. If brake warning light comes on, go to next step. If brake warning light does not come on, repair open circuit in Light Blue wire.
  3. Connect fused jumper wire between Light Blue and Black wires at 48-pin connector. Turn ignition on. If brake warning light comes on, replace ignition switch. If brake warning light does not come on, repair open circuit in Black wire between 48-pin connector and ground.
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