For a complete wiring diagram Refer to Section 8WThe EGR Solenoid is a two-wire electrically operated vacuum solenoid used to control the vacuum supply to the EGR Valve. The Solenoid receives 12 volts from the ECM/ASD relay and a pulse-width modulated ground signal from the ECM. The solenoid contains 2 vacuum ports. Vacuum from the vacuum pump system is supplied to one of the ports. The other port is connected to the EGR Valve. With the solenoid de-energized (off) the vacuum supply is blocked within the solenoid, prohibiting vacuum from reaching the EGR Valve. When the ECM energizes (grounds) the solenoid, the vacuum supply is applied to the EGR Valve causing the EGR Valve to open.When Monitored:With the ignition on and the EGR Solenoid command off.Set Condition:The ECM detects a short to ground on the (K35) EGR Solenoid Control circuit for 0.5 second.Possible CausesINTERMITTENT DTC(K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND(K35) EGR SOLENOID CONTROL CIRCUIT OPEN OR HIGH RESISTANCEEGR SOLENOIDENGINE CONTROL MODULE (ECM)Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)1. DTC IS ACTIVEIgnition on, engine not running.With the scan tool, Clear DTCs in the Engine Control Module (ECM).With the scan tool, actuate the EGR Solenoid at 100%.Monitor the scan tool for at least two minutes.With the scan tool, select View DTCs.Is the status Active for this DTC?YesGo To 2 NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)2. (K35) EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND

Turn the ignition off.Disconnect the EGR Solenoid harness connector.Disconnect the Engine Control Module (ECM) harness connector.Measure the resistance between ground and the (K35) EGR Solenoid Control circuit in the EGR Solenoid harness connector.Is the resistance below 1000 ohms?YesRepair the (K35) EGR Solenoid Control circuit for a short to ground.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoGo to 33. (K35) EGR SOLENOID CONTROL CIRCUIT OPEN OR HIGH RESISTANCE

Measure the resistance of the (K35) EGR Solenoid Control circuit between the EGR Solenoid harness connector and the Engine Control Module (ECM) harness connector.Is the resistance below 10.0 ohms?YesReplace the EGR Solenoid.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoRepair the (K35) EGR Solenoid Control circuit for an open circuit or high resistance.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)