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MAZDA Piston Engine Timing Control System: Notes

  1. Remove timer from under instrument panel on driver's side. Using jumper wire, connect terminal "A" to positive terminal of battery.
  2. Connect a 30 ohm resistor and voltmeter to terminal "D". Connect a 3.4 watt test lamp to terminal "E". Connect terminal "C" to negative battery terminal. Voltmeter should register more than 6 volts.
  3. Connect terminal "B" to positive battery terminal. Voltmeter should register less than 1 volt and test lamp should glow. After 2 minutes, voltmeter should register about 8 volts. If timer does not operate as described, replace timer.
    Fig 1: Schematic for Testing GLC Timer Unit
    G09324551Courtesy of MAZDA MOTORS CORP.
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