Ground Circuits
NOTE:
Information is not available from manufacturer for a step-by-step ground circuit test at Engine Control Module (ECM). For additional information. Also, see ECM GROUND & VOLTAGE CHECK
in SELF-DIAGNOSTICS article.
Using DVOM, switched to resistance range. Check ground connections for continuity at ECM terminals No. 10, 14, 19, and 24 (1.0 ohm maximum). See WIRING DIAGRAMS .