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P062D





2GR-FSE ENGINE CONTROL: 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.





MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

All





P0201, P0202, P0203, P0204, P0205, P0206





P062D





TYPICAL MALFUNCTION THRESHOLDS









WIRING DIAGRAM









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) Reading and Clearing Diagnostic Trouble Codes.

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 / Pending.

9. Read Pending DTCs.

HINT
- If a pending DTC is output, the system is malfunctioning.
- If a pending 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 [C].





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

13. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.

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

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 the 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 help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.

PROCEDURE

1. CLEAR DTC

(a) Connect the Techstream to the DLC3.

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

(c) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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 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:





Text in Illustration





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

NG -- INSPECT INTEGRATION RELAY (INJ RELAY)
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - FUEL INJECTOR)

(a) Disconnect the injector driver (EDU) connectors.

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

Standard Resistance:





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

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

4. CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER)

(a) Disconnect the ECM connectors.

(b) Disconnect the 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 connectors.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER)
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 E5, E4 and E3 ECM harness side connectors.





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

Standard:

Signal waveform appears as shown in the illustration.





Text in 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.

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

6. CHECK ECM (INJF VOLTAGE)

(a) Connect an oscilloscope to terminals INJF and E1 of the E4 and 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.





Text in 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.

NG -- REPLACE INJECTOR DRIVER Removal

OK -- CHECK FOR INTERMITTENT PROBLEMS Check For Intermittent Problems

7. INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE)

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

NG -- REPLACE FUEL INJECTOR FOR DIRECT INJECTION Removal

OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER - FUEL INJECTOR)

8. INSPECT INTEGRATION RELAY (INJ RELAY)

(a) Inspect the INJ relay Integration Relay.

NG -- REPLACE INTEGRATION RELAY (INJ RELAY)
OK -- Continue to next step.

9. CHECK HARNESS AND CONNECTOR (INJ RELAY - INJECTOR DRIVER)

(a) Disconnect the integration relay connector.

(b) Disconnect the 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 integration relay connector.

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

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ RELAY - INJECTOR DRIVER)
OK -- Continue to next step.

10. CHECK HARNESS AND CONNECTOR (INJ RELAY - ECM)

(a) Disconnect the integration relay connector.

(b) Disconnect the ECM 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 integration relay connector.

(e) Reconnect the ECM connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ RELAY - ECM)

OK -- REPLACE ECM Removal
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