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Home >> Isuzu >> 1985 >> Pickup Base, 2.2 S, 4WD >> Repair and Diagnosis >> Engine Performance >> System >> EGR System - Diesel >> System Testing >> Electronic EGR Controller
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Electronic EGR Controller

  1. Using a voltmeter, connect positive lead to the Light-Green or Light-Green/Black wire at the vacuum switching valve wiring connector. Connect negative test lead to Black/Yellow wire.
  2. Check for 12 volts to vacuum switching valve(s) when engine speed is more than 1200 RPM (I-Mark), or less than 3000 RPM. If not, replace EGR controller.
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