Diagnostic Aids

Before replacing ECM, use an ohmmeter and check EGR valve resistances. Resistance between terminals "A" and "E" should be 9.5-10.5 ohms. Resistance between terminals "B" and "D" should be greater than 3000 ohms. Resistance between terminals "B" and "C" should start at 700 ohms and increase to about 4000 ohms as pintle is slowly moved inward.

Fig 1: Code 32 Schematic ("C" & "K" Series A/T) EGR Circuit Error With Linear EGR

Fig 2: Code 32 Schematic ("G" Series) EGR Circuit Error With Linear EGR

Fig 3: Code 32 Flow Chart EGR Circuit Error With Linear EGR