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Home >> Mazda >> 1994 >> Navajo LX, 4WD, Automatic >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Testing >> Ignition Checks >> Engine Controls - Basic Testing >> Check VRS Resistance

Check VRS Resistance

Turn key off and disconnect PCM. Connect negative lead of ICM diagnostic cable to negative battery terminal. Set DVOM to 20-k/ohm scale. Measure resistance between breakout box pins No. J48 (VRS

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 ICM or replace VRS.

Fig 1: ICM Test Schematic (B4000 & Navajo)
G91J17573Courtesy of MAZDA MOTORS CORP.
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