P0202

2GR-FSE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0201-P0206, P062D: Injector Circuit / Open - (Cylinder 1)
P062D - No. 1 Fuel Injector Driver Circuit Performance

DESCRIPTION

The D-4S system has two fuel injection methods. One is the in-cylinder direct injection method that directly injects pressurized fuel into the combustion chamber. The other is the intake port injection method. The ECM determines which fuel injection method to use in accordance with the engine conditions. For the in-cylinder direction injection method, the injector driver (EDU) in the engine room operates the fuel injectors (for direction injection) at high speeds. The EDU receives fuel injection request signals from the ECM and converts the signals to high voltage / high current injector operation signals to operate the fuel injectors (for direction injection).

The fuel injection sequence occurs in numerical order from No. 1 to No. 6.

The ECM monitors the EDU at all times. If drivers or fuel injectors are malfunctioning, the EDU sends fuel injector operation condition signals (fail signals IJF1 to IJF3) to the ECM. When the ECM receives the signals, the ECM stops the fuel injection control of the appropriate cylinders, cuts voltage to the appropriate injector relay, and illuminates the MIL.





IJF1 - IJF3 Signal





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





P0201, P0202, P0203, P0204, P0205, P0206





P062D





TYPICAL MALFUNCTION THRESHOLDS

P0201, P0202, P0203, P0204, P0205, P0206





P062D









CONFIRMATION DRIVING PATTERN





1. Connect the Techstream to the DLC3.

2. Turn the engine switch on (IG) and turn the Techstream on.

3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) DTC Check / Clear.

4. Turn the engine switch off and wait for 30 seconds.

5. Turn the engine switch on (IG) and turn the Techstream on [A].

6. Start the engine.

7. Idle the engine for 15 seconds or more [B].

8. Enter the following menus: Powertrain / Engine / Trouble Codes.

9. Read the DTC [C].

HINT
- If a DTC is output, the system is malfunctioning.
- If a DTC is not output, perform the following procedure.

10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

11. Input the DTC: P0201, P0202, P0203, P0204, P0205, P0206 or P062D.

12. Check the DTC judgment result.





HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform step [B] again.

13. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

14. Check the DTC judgment result.

HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.

15. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

WIRING DIAGRAM









INSPECTION PROCEDURE

HINT
- If the current from the INJ relay is cut because DTC P062D is stored, DTC P1235 will be stored even if the fuel pump for high pressure is normal.
- Read freeze frame data using Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air/fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction Freeze Frame Data.

PROCEDURE

1. CLEAR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(c) Turn the tester on.

(d) Clear the DTCs DTC Check / Clear.

HINT
If DTC P062D is stored, current to the INJ relay will be shut off.

NEXT -- Continue to next step.

2. INSPECT INJECTOR DRIVER (POWER SOURCE OF EDU)

(a) Disconnect the E27 injector driver (EDU) connector.





(b) Turn the engine switch on (IG).

(c) Measure the voltage according to the value(s) in the table below.

Standard voltage:





(d) Reconnect the injector driver (EDU) connector.

NG -- CHECK EDU (POWER SOURCE CIRCUIT)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (EDU - FUEL INJECTOR FOR DIRECT INJECTION)

(a) Disconnect the H1 and I1 connectors.

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





(c) Reconnect the injector driver (EDU) connector.

NG -- INSPECT FUEL INJECTOR FOR DIRECT INJECTION
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (ECM - EDU)

(a) Disconnect the E5, E3 and E6 connectors.

(b) Disconnect the E26 injector driver (EDU) connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance (Check for open):





Standard resistance (Check for short):





(d) Reconnect the ECM connector.

(e) Reconnect the injector driver (EDU) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. CHECK ECM (#10, #20, #30, #40, #50 AND #60 VOLTAGE)

(a) Connect an oscilloscope to terminals #10 to #60 and E1 of the E3, E4 and E5 ECM harness side connectors.





(b) With the engine cranking or idling, check the signal waveform.

Standard:

Signal waveform appears as shown in the illustration.





HINT
- Check the waveform before the ECM detects the DTC(s) and enters the fail-safe mode, because the ECM will not indicate the output voltage any more once it enters the fail-safe mode.
- When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.

NG -- REPLACE ECM Removal
OK -- Continue to next step.

6. CHECK ECM (INJF VOLTAGE)

(a) Connect an oscilloscope to terminals INJF, IJF2 and IJF3 of the E6 ECM harness side connectors.





(b) With the engine cranking or idling, check the signal waveform.

Standard:

Signal waveform appears as shown in the illustration.





HINT
- Check the waveform before the ECM detects the DTC(s) and enters the fail-safe mode, because the injector driver (EDU) will not indicate the output voltage any more once it enters the fail-safe mode.
- When the direct injection injectors are operating, Direct is displayed for Injection Way of the Data List.

NG -- REPLACE INJECTOR DRIVER

OK -- CHECK FOR INTERMITTENT PROBLEMS

7. INSPECT FUEL INJECTOR FOR DIRECT INJECTION

(a) Check the resistance of the fuel injector for direct injection Fuel Injector (for Direct Injection).

NG -- REPLACE FUEL INJECTOR FOR DIRECT INJECTION

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR