P0204
2UR-GSE ENGINE CONTROL: SFI SYSTEM: P0201: Injector Circuit / Open - (Cylinder 1)
DTC P0201 - Injector Circuit / Open - (Cylinder 1)
DTC P0202 - Injector Circuit / Open - (Cylinder 2)
DTC P0203 - Injector Circuit / Open - (Cylinder 3)
DTC P0204 - Injector Circuit / Open - (Cylinder 4)
DTC P0205 - Injector Circuit / Open - (Cylinder 5)
DTC P0206 - Injector Circuit / Open - (Cylinder 6)
DTC P0207 - Injector Circuit / Open - (Cylinder 7)
DTC P0208 - Injector Circuit / Open - (Cylinder 8)
DTC P062D - Fuel Injector Driver Circuit Performance Bank1
DTC P062E - Fuel Injector Driver Circuit Performance Bank2
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 2 injector drivers in the engine compartment operate the fuel injectors (for direction injection) at high speeds.
Each injector driver 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 the following order: No.1, No. 8, No. 7, No. 3, No. 6, No. 5, No. 4, No. 2. The ECM monitors each injector driver at all times. If drivers or injectors are malfunctioning, the injector driver sends fuel injector operation condition fail signals (INJ1 to INJ4) to the ECM.
INJ1 to INJ4 Signal Group
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: 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 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.
PROCEDURE
1. INSPECT INJECTOR DRIVER (POWER SOURCE OF ECU)
(a) Disconnect the injector driver connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage (No. 1):
Standard Voltage (No. 2):
Result:
(d) Reconnect the injector driver connector.
C -- CHECK FUSE (INJ2 FUSE)
B -- INSPECT FUSE (INJ FUSE)
A -- Continue to next step.
2. CHECK HARNESS AND CONNECTOR (GROUND CIRCUIT)
(a) Disconnect injector driver connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance (No. 1):
Standard Resistance (No. 2):
(c) Reconnect the injector driver connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (GROUND CIRCUIT)
OK -- Continue to next step.
3. CHECK FOR DTC
(a) Interchange the injector driver No. 1 and No. 2.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG) and turn the Techstream ON.
(d) Clear DTCs DTC Check / Clear.
NOTICE: Before deleting the DTCs, write them down.
(e) Start the engine.
(f) Enter the following menus: Powertrain / Engine / Trouble Codes.
(g) Read the DTCs.
Result:
B -- REPLACE INJECTOR DRIVER
A -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (FUEL INJECTOR FOR DIRECT INJECTION)
(a) Disconnect the injector driver (No. 1) connector.
(b) Disconnect the injector driver (No. 2) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance (No. 1):
Standard Resistance (No. 2):
(d) Reconnect the injector driver connectors.
NG -- INSPECT FUEL INJECTOR FOR DIRECT INJECTION
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (INJECTOR DRIVER - ECM)
(a) Disconnect the ECM connectors.
(b) Disconnect the injector driver 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 connector and ECM connectors.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVE - ECM)
OK -- REPLACE ECM
6. INSPECT FUSE (INJ FUSE)
(a) Remove the INJ fuse from the integration relay.
(b) Measure the resistance according the value(s) in the table below.
Standard Resistance:
(c) Reinstall the INJ fuse.
NG -- REPLACE FUSE (INJ2 FUSE)
OK -- Continue to next step.
7. INSPECT INTEGRATION RELAY (INJ RELAY)
(a) Remove the integration relay from the engine room No. 2 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Reinstall the integration relay.
NG -- REPLACE INTEGRATION RELAY
OK -- Continue to next step.
8. CHECK HARNESS AND CONNECTOR (INJ RELAY - EFI MAIN RELAY)
(a) Remove the integration relay from the engine room No. 2 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Reinstall the integration relay.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - INJ RELAY)
OK -- Continue to next step.
9. CHECK HARNESS AND CONNECTOR (INJ RELAY - ECM)
(a) Remove the integration relay from the engine room No. 2 relay block.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(d) Reinstall the integration relay.
(e) Reconnect the ECM Connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ RELAY - ECM)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ RELAY - P/I-B FUSE)
10. INSPECT FUEL INJECTOR FOR DIRECT INJECTION
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 DRIVE - ECM)
11. CHECK FUSE (INJ2 FUSE)
(a) Remove the INJ2 fuse from the engine room No. 2 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Reinstall the INJ2 fuse.
NG -- REPLACE FUSE (INJ2 FUSE)
OK -- Continue to next step.
12. INSPECT RELAY (INJ2 RELAY)
(a) Remove the INJ2 relay from the engine room No. 2 relay block.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) Reinstall the INJ2 relay.
NG -- REPLACE RELAY (INJ2 RELAY)
OK -- Continue to next step.
13. CHECK HARNESS AND CONNECTOR (INJ2 RELAY POWER SOURCE)
(a) Remove the INJ2 relay from the engine room No. 2 relay block.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Reinstall the INJ2 relay.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ2 RELAY - EFI MAIN RELAY)
OK -- Continue to next step.
14. CHECK HARNESS AND CONNECTOR (INJ2 RELAY - ECM)
(a) Remove the INJ2 relay from the engine room No. 2 relay block.
(b) Disconnect the ECM connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(d) Reinstall the INJ2 relay.
(e) Reconnect the ECM connector.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ2 RELAY - ECM)
OK -- Continue to next step.
15. CHECK HARNESS AND CONNECTOR (INJ2 RELAY - BATTERY)
(a) Remove the INJ2 relay from the engine room No. 2 relay block.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
(d) Reinstall the INJ2 relay.
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ2 RELAY - BATTERY)
OK -- REPAIR OR REPLACE HARNESS OR CONNECTOR (INJ2 RELAY - E/G-B FUSE)