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P0401-EGR SYSTEM PERFORMANCE (CONTINUED) 7. (Z42) EGR SOLENOID GROUND CIRCUIT OPEN Turn the ignition off. Using a 12-volt test light connected to battery voltage, probe the (Z42) Does the 12-volt test light illuminate brightly? Yes >> Go To 8 No >> Repair the open in the (Z42) EGR Solenoid ground circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 8. (K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND Disconnect the C2 PCM harness connector. Measure the resistance between ground and the (K35) EGR Solenoid Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (K35) EGR Solenoid Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 9 9 - 448 ENGINE ELECTRICAL DIAGNOSTICS WK |