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Control Switches

  1. Check main feed fuse and stop light fuse. If okay, disconnect 6-way connector at amplifier assembly. Turn ignition off. Connect the voltmeter across circuit No. 151 between Light Blue/Black lead and ground.
  2. Turn ignition on. Depress "ON" button and check for battery voltage. Make following tests while rotating steering wheel:
  3. Using ohmmeter depress "OFF" button and check for reading from 0 to 1 ohm. Depress "SET/ACCEL" button and check for a reading from 646 to 714 ohms. Depress "COAST" button and check for a reading from 114 to 126 ohms.
  4. Depress "RESUME" button and check for a reading from 2090 to 2310 ohms. If resistance readings are okay but meter needle fluctuates, remove steering wheel and clean contact surfaces of cruise control ground brush and turn signal brush.
  5. If resistance readings are high, check switch assemblies and ground circuit in steering column.