GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2007 🢒 Vivant 🢒 HVAC 🢒 HVAC - Automatic 🢒 DTC 017

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor

DTC 017: Injector Control Circuit

Circuit/System Description

The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The ECM controls each fuel injector by grounding the control circuit via a solid state device called a driver. The ECM monitors the status of each driver.

Conditions for Setting the DTC
    • The fuel pump is running.
    • The ignition 1 voltage is greater than 9 Volts.
    • A fuel injector fault has been detected over 3 times of successive 1 second intervals.
    • The DTCs run continuously once the above conditions are met.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

    •  Engine Control Module Connector End Views
    •  Engine Controls Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

    •  Scan Tool Data List
    •  Scan Tool Data Definitions
    •  Scan Tool Output Controls

Special Tools Required

J 34730-405 Injector Test Lamp

Circuit/System Verification

Engine running, observe the DTC information with a scan tool. DTC 017 should not set.

Circuit/System Testing
  1. Engine idling, disconnect one fuel injector connector at a time to isolate the misfiring cylinder. The engine speed should change when an injector is disconnected.

    2. Important: The test lamp is used to load the circuit and may not illuminate.

  2. Connect a test lamp between the ignition 1 voltage circuit of the fuel injector and ground.
  3. Ignition ON, load test for battery voltage between the ignition 1 voltage circuit of the fuel injector and ground.
    4. ⇒If less than B+, repair the ignition 1 voltage circuit of the fuel injector for a short to ground or an open/high resistance.
  4. With the ignition OFF, connect a J 34730-405 between the control circuit and the ignition 1 voltage circuit of the fuel injector.
  5. Engine running, the test lamp should flash.
    6. ⇒If the test lamp remains ON all the time, test for a short to ground on the control circuit. If circuit/connections test normal, replace the ECM.
    ⇒If the test lamp remains OFF all the time, test for a short to voltage or an open/high resistance on the control circuit. If circuit/connections test normal, replace the ECM.
  6. If all circuits/connections test normal, test or replace the fuel injector.

Component Testing

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

  1. Measure for 11-14 ohms of resistance between the terminals of the fuel injector.
    2. ⇒If the resistance is not within the specified range, replace the fuel injector.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Fuel Injection Fuel Rail Assembly Replacement
    •  Control Module References for engine control module replacement, setup, and programming.