Cruze

DTC P0261, P0262, P0264, P0265, P0267, P0268, P0270, or P0271

The control module enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The control module controls each fuel injector by grounding the control circuit via a solid state device called a driver. The control module monitors the status of each driver. If the control module detects an incorrect voltage for the commanded state of the driver, a fuel injector control circuit DTC sets.

DTCs P0261 00, P0262 00, P0264 00, P0265 00, P0267 00, P0268 00, P0270 00, and P0271 00 are Type A DTCs.

DTCs P0261 00, P0262 00, P0264 00, P0265 00, P0267 00, P0268 00, P0270 00, and P0271 00 are Type A DTCs.

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Fuel System Description

Electrical Information Reference

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Note: If you were sent here from engine cranks but does not run, proceed to circuit/system testing.

1. Engine running, observe the DTC information with a scan tool. DTCs P0261 00, P0262 00, P0264 00, P0265 00, P0267 00, P0268 00, P0270 00, or P0271 00 should not set.
2. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the freeze frame/failure records data.

1. Ignition OFF, disconnect the harness connector at the appropriate Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, or Q17D Fuel Injector 4.
2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal A and ground.

⇒	If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test or replace the appropriate Q17 Fuel Injector.

3. Ignition OFF, connect a test lamp between the control circuit terminal B and the ignition circuit terminal A of Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, or Q17D Fuel Injector 4.
4. Engine cranking, the test lamp should flash.

⇒	If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module.

⇒	If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

5. If all circuits test normal, test or replace the Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, or Q17D Fuel Injector 4.

Static Test

1. Ignition OFF, disconnect the harness connector at the appropriate Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, or Q17D Fuel Injector 4.

Note: The engine coolant temperature (ECT) sensor must be between 10-32°C (50-90°F) in order for an accurate measurement.

2. Test for 11-14 ohms between the ignition voltage terminal A and the control terminal B.

⇒	If not within the specified range, replace the Q17A Fuel Injector 1, Q17B Fuel Injector 2, Q17C Fuel Injector 3, or Q17D Fuel Injector 4.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.