| 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 |
| *1 | No. 1 injector driver (EDU) | *2 | No. 2 injector driver (EDU) |
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 |
| INJ No. | Injector Driver Group | Fuel Injector Group |
|---|---|---|
| INJ1 | No. 1 Injector Driver (EDU) |
|
| INJ2 |
|
|
| INJ3 | No. 2 Injector Driver (EDU) |
|
| 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 sets 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 | Injector for direct injection, No. 1 injector driver (EDU), No. 2 injector driver (EDU) |
| Frequency of Operation | Continuous |
CONFIRMATION DRIVING PATTERN
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and 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) and 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].
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 |
|
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.
CAUTION / NOTICE / HINT
Inspect the fuses for circuits related to this system before performing the following procedure.
If the current from the INJ NO. 1 relay is cut because DTC P062D is stored, DTC P1235 will be stored even if the fuel pump (for high pressure side) is normal.
If the current from the INJ NO. 2 relay is cut because DTC P062E is stored, DTC P1236 will be stored even if the fuel pump (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
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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
GO TO STEP 11
GO TO STEP 18
CHECK HARNESS AND CONNECTOR
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
The standard values shown are fuel injector assembly (for direct injection) resistance values.
| Result | |||
|---|---|---|---|
|
CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER (EDU))
Disconnect the ECM connector.
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK ECM (#1, #2, #3, #4, #5, #6, #7 AND #8 VOLTAGE)
Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs.
If DTC P062D is stored, the current from the INJ NO. 1 relay is cut.
If DTC P062E is stored, the current from the INJ NO. 2 relay is cut.
Disconnect the F14 or F41 injector driver (EDU) connector.
| *a | Component with harness connected (ECM) |
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 | F4-22 (#1) - F4-1 (E1) F4-12 (#2) - F4-1 (E1) F4-11 (#3) - F4-1 (E1) F4-21 (#4) - F4-1 (E1) F4-10 (#5) - F4-1 (E1) F4-20 (#6) - F4-1 (E1) F4-19 (#7) - F4-1 (E1) F4-9 (#8) - F4-1 (E1) |
| Tester Range | 2 V/DIV., 20 ms./DIV. |
| Condition | Cranking |
| Result | |||
|---|---|---|---|
|
REPLACE INJECTOR DRIVER (EDU)Click here
REPLACE ECMClick here
INSPECT FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION (RESISTANCE))
Check the resistance of the fuel injector assembly (for direct injection).
Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection).
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER (EDU) - FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION))
REPLACE FUEL INJECTOR ASSEMBLY (FOR DIRECT INJECTION)Click here
INSPECT INJ NO. 1 RELAY
Inspect the INJ NO. 1 relay.
| Result | |||
|---|---|---|---|
|
REPLACE INJ NO. 1 RELAY
CHECK TERMINAL VOLTAGE (POWER SOURCE OF INJ NO. 1 RELAY)
Remove the INJ NO. 1 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | ||||||
|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INJ NO. 1 RELAY)
CHECK HARNESS AND CONNECTOR (INJ NO. 1 RELAY - INJECTOR DRIVER (EDU))
Remove the INJ NO. 1 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (POWER SOURCE OF INJ NO. 1 RELAY)
Remove the INJ NO. 1 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | ||||||
|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - INJ NO. 1 RELAY)
CHECK HARNESS AND CONNECTOR (INJ NO. 1 RELAY - ECM)
Remove the INJ NO. 1 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER (EDU))
Disconnect the ECM connector.
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE)
Disconnect the F14 injector driver (EDU) connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPLACE INJECTOR DRIVER (EDU)Click here
REPLACE ECMClick here
INSPECT INJ NO. 2 RELAY
Inspect the INJ NO. 2 relay.
| Result | |||
|---|---|---|---|
|
REPLACE INJ NO. 2 RELAY
CHECK TERMINAL VOLTAGE (POWER SOURCE OF INJ NO. 2 RELAY)
Remove the INJ NO. 2 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | ||||||
|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (BATTERY - INJ NO. 2 RELAY)
CHECK HARNESS AND CONNECTOR (INJ NO. 2 RELAY - INJECTOR DRIVER (EDU))
Remove the INJ NO. 2 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (POWER SOURCE OF INJ NO. 2 RELAY)
Remove the INJ NO. 2 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | ||||||
|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI-MAIN RELAY - INJ NO. 2 RELAY)
CHECK HARNESS AND CONNECTOR (INJ NO. 2 RELAY - ECM)
Remove the INJ NO. 2 relay from the No. 2 engine room relay block and No. 2 junction block assembly.
Disconnect the ECM connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER (EDU))
Disconnect the ECM connector.
Disconnect the injector driver (EDU) connector.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE)
Disconnect the F41 injector driver (EDU) connector.
Turn the engine switch on (IG).
Measure the voltage according to the value(s) in the table below.
| Standard Voltage | |||||||||
|---|---|---|---|---|---|---|---|---|---|
|
| Result | |||
|---|---|---|---|
|
REPLACE INJECTOR DRIVER (EDU)Click here
REPLACE ECMClick here