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Home >> Mazda >> 1991 >> 929 Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Ignition Checks >> Check VRS Resistance (NAVAJO)

Check VRS Resistance (NAVAJO)

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). If resistance is 2580-2700 ohms, go to VRS SENSOR (NAVAJO). If resistance is not 2580-2700 ohms, repair wires between VRS and EDIS or replace VRS.

Fig 1: EDIS Test Schematic (4.0L)
G91J17573Courtesy of MAZDA MOTORS CORP.