For a complete wiring diagram Refer to Section 8WWhen Monitored:With the engine running.Set Condition:The ECM detects a short to ground error on the injector high-side control circuit.Possible CausesINTERMITTENT DTCFUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT SHORTED TO GROUNDFUEL INJECTOR LOW-SIDE CONTROL CIRCUIT SHORTED TO GROUNDFUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT SHORTED TO FUEL INJECTOR LOW-SIDE CONTROL CIRCUITFUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT OPEN OR HIGH RESISTANCEFUEL INJECTOR LOW-SIDE CONTROL CIRCUIT OPEN OR HIGH RESISTANCEFUEL INJECTORENGINE CONTROL MODULE (ECM)Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)1. DTC IS ACTIVEThis DTC can set as a result of a fault in any of the injector circuits. Be sure to check all injector circuits before replacing an injector and all injectors before replacing a module.Ignition on, engine not running.With the scan tool, Clear DTCs in the Engine Control Module (ECM).Attempt to start the engine and test drive the vehicle.With the scan tool, select View DTCs.Is the status Active for this DTC?YesGo To 2NoRefer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.(Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)2. FUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT SHORTED TO GROUNDTurn the ignition off.Disconnect each Fuel Injector harness connector.Disconnect the Engine Control Module (ECM) harness connector.Measure the resistance between ground and the Fuel Injector High-Side Control circuit in each Fuel Injector harness connector.Is the resistance above 1000 ohms for each circuit?YesGo to 3NoRepair the Fuel Injector High-Side Control circuit for a short to ground.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)3. FUEL INJECTOR LOW-SIDE CONTROL CIRCUIT SHORTED TO GROUNDMeasure the resistance between ground and the Fuel Injector Low-Side Control circuit in each Fuel Injector harness connector.Is the resistance above 1000 ohms for each circuit?YesGo to 4NoRepair the Fuel Injector Low-Side Control circuit for a short to ground.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)4. FUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT SHORTED TO FUEL INJECTOR LOW-SIDE CONTROL CIRCUITMeasure the resistance between the Fuel Injector High-Side Control circuit and the Fuel Injector Low-Side Control circuit in each Fuel Injector harness connector.Is the resistance above 1000 ohms between the circuits in each connector?YesGo to 5NoRepair the Fuel Injector High-Side Control circuit for a short to the Fuel Injector Low-Side Control circuit.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)5. FUEL INJECTOR HIGH-SIDE CONTROL CIRCUIT OPEN OR HIGH RESISTANCEMeasure the resistance of each Fuel Injector High-Side Control circuit between the Fuel Injector harness connector and the Engine Control Module (ECM) harness connector.Is the resistance below 10.0 ohms for each circuit?YesGo to 6NoRepair the Fuel Injector High-Side Control circuit for an open circuit or high resistance.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)6. FUEL INJECTOR LOW-SIDE CONTROL CIRCUIT OPEN OR HIGH RESISTANCEMeasure the resistance of each Fuel Injector Low-Side Control circuit between the Fuel Injector harness connector and the Engine Control Module (ECM) harness connector.Is the resistance below 10.0 ohms?YesGo to 7NoRepair the Fuel Injector Low-Side Control circuit for an open circuit or high resistance.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)7. FUEL INJECTORMeasure the resistance between the terminals of each Fuel Injector.Is the resistance approximately 185k ohms (+/- 10%) for each injector?YesGo to 8NoReplace Fuel Injector in accordance with the Service Information.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)8. ENGINE CONTROL MODULE (ECM)Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between each Fuel Injector and the Engine Control Module (ECM).Look for any chafed, pierced, pinched, or partially broken wires.Look for broken, bent, pushed out or corroded terminals.Monitor the scan tool data relative to this circuit and wiggle test the wiring and connectors.Look for the data to change or for the DTC to reset during the wiggle test.Refer to any Technical Service Bulletins that may apply.Were any problems found?YesRepair as necessary.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)NoReplace the Engine Control Module (ECM) in accordance with the Service Information.Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - STANDARD PROCEDURE)