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B210 & F10

  1. Make sure wiring and vacuum hoses are properly connected and that distributor is working properly. Connect timing light to engine. With engine warm, adjust engine speed to approximately 1600 RPM.
  2. Depress clutch pedal to disengage clutch, then shift transmission through all forward gears while checking ignition timing in each gear.
  3. The system is functioning correctly if timing increase 10-15 degrees (5 degrees on B210) in high gear. If timing does not vary as specified, go to step 4  ) on B210 or step  5) on F10.
  4. Check electrical system at function test connector. See Figure and Figure. Turn ignition on (DO NOT start engine). Check voltage across terminals "A" and "B". Reading should be 12 volts in high gear, zero (0) volts in all other gear positions. If not, check harness and/or fuse.
  5. Turn ignition off. Check continuity between terminals "B" and "C" at function test connector. See Figure and Figure. If no continuity exists, check fuse, wiring, and vacuum switching valve.
  6. Turn ignition on (DO NOT start engine). Check voltage across terminals "A" and "B". Reading should be 12 volts in high gear, zero (0) volts in all other gear positions. If not, check harness and/or fuse.
  7. On both models, check vacuum switching valve for continuity. If ohmmeter needle deflects, check vacuum switching valve for a "click" when power is applied to it. If "click" is not heard, replace valve.
  8. Check top gear detecting switch for correct on/off operation by connecting ohmmeter leads to switch while shifting transmission through all gear positions. Ohmmeter should read infinity in all gear positions except high gear. Replace switch if not working properly.
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