Check VRS Resistance

Turn key off and disconnect ECA. Connect EDIS diagnostic cable negative lead to negative battery terminal. Set DVOM to 20-k/ohm scale. Measure resistance between breakout box pins No. J48 (VRS - E) and J35 (VRS + E). See Fig 1 . If resistance is 2580-2700 ohms, go to VRS SENSOR. If resistance is not 2580-2700 ohms, repair wires between VRS and EDIS or replace VRS.

Fig 1: Elec.Dist. Ignition System (EDIS) Test Schematic (Navajo)

Courtesy of MAZDA MOTORS CORP.