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Home >> Isuzu >> 1986 >> Trooper II LS, 2.3 L >> Repair and Diagnosis >> Engine Performance >> System >> EGR Function Testing - Diesel >> Component Testing >> Electronic EGR Controller

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 less than 3000 RPM. If not, replace EGR controller.
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