| DTC Code | DTC Name |
|---|---|
| P0201 | Injector Circuit / Open - (Cylinder 1) |
| P0202 | Injector Circuit / Open - (Cylinder 2) |
| P0203 | Injector Circuit / Open - (Cylinder 3) |
| P0204 | Injector Circuit / Open - (Cylinder 4) |
| P0205 | Injector Circuit / Open - (Cylinder 5) |
| P0206 | Injector Circuit / Open - (Cylinder 6) |
| P0207 | Injector Circuit / Open - (Cylinder 7) |
| P0208 | Injector Circuit / Open - (Cylinder 8) |
| P062D | No. 1 Fuel Injector Driver Circuit Performance |
| P062E | No. 2 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 2 injector drivers in the engine compartment operate the fuel injectors (for direct 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 direct 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.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory |
|---|---|---|---|---|---|
| P0201 | Injector Circuit / Open - (Cylinder 1) | INJ1 signal (#1) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0202 | Injector Circuit / Open - (Cylinder 2) | INJ4 signal (#2) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0203 | Injector Circuit / Open - (Cylinder 3) | INJ4 signal (#3) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0204 | Injector Circuit / Open - (Cylinder 4) | INJ2 signal (#4) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0205 | Injector Circuit / Open - (Cylinder 5) | INJ3 signal (#5) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0206 | Injector Circuit / Open - (Cylinder 6) | INJ1 signal (#6) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0207 | Injector Circuit / Open - (Cylinder 7) | INJ2 signal (#7) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P0208 | Injector Circuit / Open - (Cylinder 8) | INJ3 signal (#8) is not input for 20 consecutive revolutions (1 trip detection logic). |
|
Comes on | DTC stored |
| P062D | No. 1 Fuel Injector Driver Circuit Performance | INJ1 and INJ2 signal are not input 60 times or more (1 trip detection logic). |
|
Comes on | DTC stored |
| P062E | No. 2 Fuel Injector Driver Circuit Performance | INJ3 and INJ4 signal are not input 60 times or more (1 trip detection logic). |
|
Comes on | DTC stored |
| *1 | No. 1 injector driver |
| *2 | No. 2 injector driver |
| INJ No. | Injector Driver Group | Cylinder Group |
|---|---|---|
| INJ1 | No. 1 Injector Driver |
|
| INJ2 |
|
|
| INJ3 | No. 2 Injector Driver |
|
| INJ4 |
|
MONITOR DESCRIPTION
The injector driver sends the injection confirmation signal (INJ) to the engine control module (ECM). Using this signal, the ECM monitors the direct fuel injector operation. If the ECM receives no INJ signal in 20 consecutive engine rotations, the ECM illuminates the MIL and stores the DTC immediately. Then, the ECM aborts the direct fuel injection of the appropriate cylinder, or turns off the EDU relay to shut the injector driver power source.
MONITOR STRATEGY
| Required Sensors/Components | Direct fuel injector assembly, No. 1 injector driver, No. 2 injector driver |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the engine switch off and wait for at least 30 seconds.
Turn the engine switch on (IG).
Turn the GTS on.
Start the engine.
Idle the engine for 15 seconds or more [A].
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
Read pending DTCs [B].
Tech Tips
If a pending DTC is output, the system is malfunctioning.
If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P062D or P062E.
Check the DTC judgment result.
| GTS Display | Description |
|---|---|
| NORMAL |
|
| ABNORMAL |
|
| INCOMPLETE |
|
| N/A |
|
Tech Tips
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 N/A, perform steps [A] and [B] again.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
Note
Inspect the fuses for circuits related to this system before performing the following procedure.
Tech Tips
If the current from the EDU NO. 1 relay is cut because DTC P062D is stored, DTC P1235 will be stored even if the fuel pump with seal sub-assembly (for high pressure side) is normal.
If the current from the EDU NO. 2 relay is cut because DTC P062E is stored, DTC P1236 will be stored even if the fuel pump with seal sub-assembly (for high pressure side) is normal.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
Read freeze frame data using the GTS. 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
CHECK DTC OUTPUT (DTC DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P062D AND P062E)
Connect the GTS to the DLC3
Turn the engine switch on (IG).
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
| Result | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| B |
|
GO TO STEP 7 Click here |
| C |
|
GO TO STEP 14 Click here |
| D |
|
CHECK TERMINAL VOLTAGE (NO. 1 INJECTOR DRIVER) Click here |
| E |
|
CHECK TERMINAL VOLTAGE (NO. 2 INJECTOR DRIVER) Click here |
| A |
|
CHECK HARNESS AND CONNECTOR (DIRECT FUEL INJECTOR ASSEMBLY - INJECTOR DRIVER)
Disconnect the injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Tech Tips
The standard values shown are direct fuel injector assembly resistance values.
| Result | |||
|---|---|---|---|
|
| NG |
|
INSPECT DIRECT FUEL INJECTOR ASSEMBLY (RESISTANCE) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER)
Disconnect the ECM connector.
Disconnect the injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK ECM OUTPUT SIGNAL (DIRECT FUEL INJECTOR ASSEMBLY SIGNAL)
| *a | 2 V/DIV. |
| *b | 20 ms./DIV. |
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
Tech Tips
If DTC P062D is stored, the current from the EDU NO. 1 relay is cut.
If DTC P062E is stored, the current from the EDU NO. 2 relay is cut.
Disconnect the injector driver connector.
Inspect the ECM using an oscilloscope.
While cranking the engine, check waveform the terminals of the ECM connector.
| Standard |
|---|
| Signal waveform appears as shown in the illustration. |
| ECM Terminal Name | G74-3 (#10) - Body ground G72-11 (#20) - Body ground G72-2 (#30) - Body ground G74-11 (#40) - Body ground G72-12 (#50) - Body ground G74-12 (#60) - Body ground G74-2 (#70) - Body ground G72-3 (#80) - Body ground |
| Tester Range | 2 V/DIV., 20 ms./DIV. |
| Condition | Cranking |
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE INJECTOR DRIVER (NO. 1 AND NO. 2) Click here |
| NG |
|
REPLACE ECM Click here |
INSPECT DIRECT FUEL INJECTOR ASSEMBLY (RESISTANCE)
Check the resistance of the direct fuel injector assembly.
Tech Tips
Perform "Inspection After Repair" after replacing the direct fuel injector assembly.
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER - DIRECT FUEL INJECTOR ASSEMBLY) |
| NG |
|
REPLACE DIRECT FUEL INJECTOR ASSEMBLY Click here |
CHECK TERMINAL VOLTAGE (NO. 1 INJECTOR DRIVER)
Disconnect the No. 1 injector driver connector.
Turn the engine switch on (IG).
| *a | Front view of wire harness connector (to No. 1 Injector Driver) |
Measure the voltage according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK HARNESS AND CONNECTOR (EDU NO. 1 RELAY - NO. 1 INJECTOR DRIVER) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (ECM - NO. 1 INJECTOR DRIVER)
Disconnect the ECM connector.
Disconnect the No. 1 injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK ECM (INJ OUTPUT VOLTAGE)
| *a | Front view of wire harness connector (to No. 1 Injector Driver) |
Disconnect the No. 1 injector driver connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE NO. 1 INJECTOR DRIVER Click here |
| NG |
|
REPLACE ECM Click here |
CHECK HARNESS AND CONNECTOR (EDU NO. 1 RELAY - NO. 1 INJECTOR DRIVER)
Remove the EDU NO. 1 relay from No. 1 engine room relay block and junction block assembly.
Disconnect the No. 1 injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
INSPECT EDU NO. 1 RELAY
Inspect the EDU NO. 1 relay.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE EDU NO. 1 RELAY |
| OK |
|
CHECK HARNESS AND CONNECTOR (EDU NO. 1 RELAY - ECM)
Remove the EDU NO. 1 relay from No. 1 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 1 - EDU NO. 1 RELAY)
Remove the EFI-MAIN NO. 1 relay, EDU NO. 1 relay, A/F HTR relay and EDU NO. 2 relay from No. 1 engine room relay block and junction block assembly.
Tech Tips
Remove the EDU NO. 2 relay and A/F HTR relay connected between the checked terminals as the coil inside the relay influences the measurement value.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (EDU NO. 1 RELAY - BATTERY) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
CHECK TERMINAL VOLTAGE (NO. 2 INJECTOR DRIVER)
Disconnect the No. 2 injector driver connector.
Turn the engine switch on (IG).
| *a | Front view of wire harness connector (to No. 2 Injector Driver) |
Measure the voltage according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
CHECK HARNESS AND CONNECTOR (EDU NO. 2 RELAY - NO. 1 INJECTOR DRIVER) Click here |
| OK |
|
CHECK HARNESS AND CONNECTOR (ECM - NO. 2 INJECTOR DRIVER)
Disconnect the ECM connector.
Disconnect the No. 2 injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK ECM (INJ OUTPUT VOLTAGE)
| *a | Front view of wire harness connector (to No. 2 Injector Driver) |
Disconnect the No. 2 injector driver connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPLACE NO. 2 INJECTOR DRIVER Click here |
| NG |
|
REPLACE ECM Click here |
CHECK HARNESS AND CONNECTOR (EDU NO. 2 RELAY - NO. 1 INJECTOR DRIVER)
Remove the EDU NO. 2 relay from No. 1 engine room relay block and junction block assembly.
Disconnect the No. 1 injector driver connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
INSPECT EDU NO. 2 RELAY
Inspect the EDU NO. 2 relay.
| Result | |||
|---|---|---|---|
|
| NG |
|
REPLACE EDU NO. 2 RELAY |
| OK |
|
CHECK HARNESS AND CONNECTOR (EDU NO. 2 RELAY - ECM)
Remove the EDU NO. 2 relay from No. 1 engine room relay block and junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| OK |
|
CHECK HARNESS AND CONNECTOR (EFI-MAIN NO. 1 - EDU NO. 2 RELAY)
Remove the EFI-MAIN NO. 1 relay, EDU NO. 1 relay, A/F HTR relay and EDU NO. 2 relay from No. 1 engine room relay block and junction block assembly.
Tech Tips
Remove the EDU NO. 1 relay and A/F HTR relay connected between the checked terminals as the coil inside the relay influences the measurement value.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (EDU NO. 2 RELAY - BATTERY) |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |