GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Holden 🢒 2009 🢒 Barina 🢒 DTC 🢒 DTC P0201, P0202, P0203, or P0204

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 Descriptors

DTC P0201: Injector 1 Control Circuit

DTC P0202: Injector 2 Control Circuit

DTC P0203: Injector 3 Control Circuit

DTC P0204: Injector 4 Control Circuit

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Ignition Voltage

P0689*, P1682*

P0201**, P0202**, P0203**, P0204**, P0689*, P1682*

--

--

Injector 1 Control Circuit

P0201, P0300

P0201, P0300

P0201, P0300

--

Injector 2 Control Circuit

P0202, P0300

P0202, P0300

P0202, P0300

--

Injector 3 Control Circuit

P0203, P0300

P0203, P0300

P0203, P0300

--

Injector 4 Control Circuit

P0204, P0300

P0204, P0300

P0204, P0300

--

* Engine cranks but does not start

** If the condition is between the injector and the splice.

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 Running the DTC
    • The engine is running.
    • The ignition voltage is between 11-18 volts.
    • The DTCs run continuously once the above conditions are met.

Conditions for Setting the DTC

The ECM detects that the commanded state of the driver and the actual state of the control circuit do not match for greater than 6 seconds.

Action Taken When the DTC Sets

DTCs P0201, P0202, P0203, P0204 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204 are Type B DTCs.

Diagnostic Aids
    • The Hold indicator flashes when there is an engine misfire.
    • High resistance in the circuits of the injectors could set a misfire DTC without setting an injector DTC. Test the injector circuits of the affected cylinder(s) for a high resistance if you suspect a condition.

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Fuel System Description

Electrical Information Reference

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

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

J 34730-405 Injector Test Lamp

Circuit/System Verification

    Note: If you were sent here from DTC P0300-P0304, proceed to Circuit/System Testing.

  1. Engine idling, observe the following control circuit status parameters for each fuel injector:
    2. • INJ Ckt Short Gnd Test Status
    • INJ Ckt Open Test Status
    • INJ Sol Ckt Short Volts Test Status
      Each parameter should display OK or Not Run.
  2. Engine running, observe the DTC information with a scan tool. DTCs P0201, P0202, P0203, or P0204 should not set.
  3. 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.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the appropriate fuel injector.
  2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal A and ground.
    3. ⇒If the test lamp does not illuminate, repair the ignition voltage circuit for a short to ground or an open/high resistance. Replace the fuse if necessary.
  3. Test for 2.5-3.5 V between the control circuit terminal B and ground.
    4. ⇒If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If circuit tests normal, replace the ECM.
    ⇒If greater than the specified range, test the control circuit for a short to voltage. If circuit tests normal, replace the ECM.
  4. Ignition OFF, connect the J 34730-405 between the control circuit terminal B and the ignition voltage circuit terminal A.
  5. Engine idling, the test lamp should flash.
    6. ⇒If the test lamp does not flash, test the fuel injector circuits for a high resistance. If circuits test normal, replace the ECM.
  6. If all circuits test normal, test or replace the fuel injector.

Component Testing
  1. Ignition OFF, disconnect the harness connector at the appropriate fuel injector.

    2. 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 Ω between the ignition voltage terminal A and the control terminal B.
    3. ⇒If 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