P0203
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 and P0206
P062D
TYPICAL MALFUNCTION THRESHOLDS
P0201, P0202, P0203, P0204, P0205 and 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) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the engine switch off and wait for at least 30 seconds.
5. Turn the engine switch on (IG) and turn the Techstream on.
6. Start the engine.
7. Idle the engine for 15 seconds or more [A].
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Read the DTC [B].
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 N/A, perform steps [A] and [B] again.
13. If 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.
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. CHECK DTC OUTPUT
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result:
B -- CHECK HARNESS AND CONNECTOR (ECM - EDU)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR
(a) Disconnect the H1 and I1 injector driver (EDU) connectors.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance (Check for open):
HINT
The standard values shown are fuel injector assembly resistance values.
Standard resistance (Check for short):
(c) Reconnect the injector driver (EDU) connectors.
NG -- INSPECT FUEL INJECTOR FOR DIRECT INJECTION
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (ECM - EDU)
(a) Disconnect the E3 and E5 ECM 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 connectors.
(e) Reconnect the injector driver (EDU) connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK ECM (#10, #20, #30, #40, #50 AND #60 VOLTAGE)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
If DTC P062D is stored, the current from the INJ relay is cut.
(e) Disconnect the E26 injector driver (EDU) connector.
(f) Inspect the ECM using an oscilloscope.
(1) While cranking the engine, check waveform the terminals of the ECM connector.
Standard:
Signal waveform appears as shown in the illustration.
NG -- REPLACE ECM Removal
OK -- REPLACE INJECTOR DRIVER
5. CHECK HARNESS AND CONNECTOR (ECM - EDU)
(a) Disconnect the E6 ECM connector.
(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 injector driver (EDU) connector.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
6. CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE)
(a) Disconnect the E26 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 -- REPLACE ECM Removal
OK -- REPLACE INJECTOR DRIVER
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 (INJECTOR DRIVER - FUEL INJECTOR FOR DIRECT INJECTION)