SFI SYSTEM, Diagnostic DTC:P0201, P0202, P0203, P0204, P0205, P0206, P062D

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)
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 INJ1 to INJ3) 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.

DTC No.	DTC Detection Condition	Trouble Area
P0201	Either of following is detected (1 trip detection logic): INJ1 signal (#1) is not input for 20 consecutive revolutions INJ1 signal (#4) is not input 20 times or more, and INJ1 signal (#1) is not input 15 times or more	Open or short in injector driver (EDU) circuit Injector driver (EDU) Fuel injector for direct injection ECM
P0202	Either of following is detected (1 trip detection logic): INJ2 signal (#2) is not input for 20 consecutive revolutions INJ2 signal (#5) is not input 20 times or more, and INJ2 signal (#2) is not input 15 times or more
P0203	Either of following is detected (1 trip detection logic): INJ3 signal (#3) is not input for 20 consecutive revolutions INJ3 signal (#6) is not input 20 times or more, and INJ3 signal (#3) is not input 15 times or more
P0204	Either of following is detected (1 trip detection logic): INJ1 signal (#4) is not input for 20 consecutive revolutions INJ1 signal (#1) is not input 20 times or more, and INJ1 signal (#4) is not input 15 times or more
P0205	Either of following is detected (1 trip detection logic): INJ2 signal (#5) is not input for 20 consecutive revolutions INJ2 signal (#2) is not input 20 times or more, and INJ2 signal (#5) is not input 15 times or more
P0206	Either of following is detected (1 trip detection logic): INJ3 signal (#6) is not input for 20 consecutive revolutions INJ3 signal (#3) is not input 20 times or more, and INJ3 signal (#6) is not input 15 times or more
P062D	INJ1, INJ2 or INJ3 signal is not input 60 times or more (1 trip detection logic)

MONITOR STRATEGY

Required Sensors/Components	Injector for direct injection, 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) Click here.
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 and ECT / 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 and ECT / Utility / All Readiness.
Input the DTC: P0201, P0202, P0203, P0204, P0205, P0206 or P062D.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU's memory limit

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

INSPECTION PROCEDURE

Tech Tips

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 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 and ECT / Trouble Codes.

Read the DTCs.

Result

Result	Proceed to
DTC P0201, P0202, P0203, P0204, P0205 or P0206 is output	A
One of the following pairs of DTCs is output: P0201 and P0204, P0202 and P0205, or P0203 and P0206	B
DTC P062D is output	B

CHECK HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER) Click here

CHECK HARNESS AND CONNECTOR

Disconnect the injector driver (EDU) connectors.

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

Standard Resistance (Check for Open)

Tester Connection	Condition	Specified Condition
K1-2 (IJ1+) - K1-5- (IJ1-)	20°C (68°F)	2.01 to 2.31 Ω
L1-3 (IJ2+) - L1-6 (IJ2-)	20°C (68°F)	2.01 to 2.31 Ω
K1-3 (IJ3+) - K1-6 (IJ3-)	20°C (68°F)	2.01 to 2.31 Ω
L1-1 (IJ4+) - L1-4 (IJ4-)	20°C (68°F)	2.01 to 2.31 Ω
K1-1 (IJ5+) - K1-4 (IJ5-)	20°C (68°F)	2.01 to 2.31 Ω
L1-2 (IJ6+) - L1-5 (IJ6-)	20°C (68°F)	2.01 to 2.31 Ω

Tech Tips

The standard values shown are fuel injector assembly resistance values.

Standard Resistance (Check for Short)

Tester Connection	Condition	Specified Condition
K1-2 (IJ1+) - Body ground	20°C (68°F)	1 MΩ or higher
L1-3 (IJ2+) - Body ground	20°C (68°F)	1 MΩ or higher
K1-3 (IJ3+) - Body ground	20°C (68°F)	1 MΩ or higher
L1-1 (IJ4+) - Body ground	20°C (68°F)	1 MΩ or higher
K1-1 (IJ5+) - Body ground	20°C (68°F)	1 MΩ or higher
L1-2 (IJ6+) - Body ground	20°C (68°F)	1 MΩ or higher

Reconnect the injector driver (EDU) connectors.

INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE) Click here

CHECK HARNESS AND CONNECTOR (ECM - INJECTOR DRIVER)

Disconnect the ECM connectors.
Disconnect the injector driver (EDU) connector.

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

Standard Resistance (Check for Open)

Tester Connection	Condition	Specified Condition
F4-20 (#1) - F36-3 (IJT1)	Always	Below 1 Ω
F4-10 (#2) - F36-2 (IJT2)	Always	Below 1 Ω
F4-9 (#3) - F36-1 (IJT3)	Always	Below 1 Ω
F4-19 (#4) - F36-12 (IJT4)	Always	Below 1 Ω
F4-8 (#5) - F36-11 (IJT5)	Always	Below 1 Ω
F4-18 (#6) - F36-10 (IJT6)	Always	Below 1 Ω

Standard Resistance (Check for Short)

Tester Connection	Condition	Specified Condition
F4-20 (#1) or F36-3 (IJT1) - Body ground	Always	10 kΩ or higher
F4-10 (#2) or F36-2 (IJT2) - Body ground	Always	10 kΩ or higher
F4-9 (#3) or F36-1 (IJT3) - Body ground	Always	10 kΩ or higher
F4-19 (#4) or F36-12 (IJT4) - Body ground	Always	10 kΩ or higher
F4-8 (#5) or F36-11 (IJT5) - Body ground	Always	10 kΩ or higher
F4-18 (#6) or F36-10 (IJT6) - Body ground	Always	10 kΩ or higher

Reconnect the ECM connectors.
Reconnect the injector driver (EDU) connector.

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK ECM (#1, #2, #3, #4, #5 AND #6 VOLTAGE)

Connect the GTS to the DLC3.
Turn the engine switch on (IG).
Turn the GTS on.
Clear the DTCs Click here.

Tech Tips

If DTC P062D is stored, the current from the INJ relay is cut.
Disconnect the F36 injector driver (EDU) connector.

Text in Illustration
*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

F4-20 (#1) - F4-1 (E1)

F4-10 (#2) - F4-1 (E1)

F4-9 (#3) - F4-1 (E1)

F4-19 (#4) - F4-1 (E1)

F4-8 (#5) - F4-1 (E1)

F4-18 (#6) - F4-1 (E1)

Tester Range

2 V/DIV., 20 ms./DIV.

Condition

Cranking

REPLACE ECM Click here

REPLACE INJECTOR DRIVER Click here

CHECK HARNESS OR CONNECTOR (ECM - INJECTOR DRIVER)

Disconnect the ECM connector.
Disconnect the injector driver (EDU) connector.

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

Standard Resistance (Check for Open)

Tester Connection	Condition	Specified Condition
F2-13 (INJ1) - F36-6 (INJ1)	Always	Below 1 Ω
F2-12 (INJ2) - F36-5 (INJ2)	Always	Below 1 Ω
F2-15 (INJ3) - F36-4 (INJ3)	Always	Below 1 Ω

Standard Resistance (Check for Short)

Tester Connection	Condition	Specified Condition
F2-13 (INJ1) or F36-6 (INJ1) - Body ground	Always	10 kΩ or higher
F2-12 (INJ2) or F36-5 (INJ2) - Body ground	Always	10 kΩ or higher
F2-15 (INJ3) or F36-4 (INJ3) - Body ground	Always	10 kΩ or higher

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

REPAIR OR REPLACE HARNESS OR CONNECTOR

CHECK TERMINAL VOLTAGE (ECM OUTPUT VOLTAGE)

Text in Illustration

*a
Component with harness connected

(ECM)

Disconnect the F36 injector driver (EDU) connector.
Turn the engine switch on (IG).

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

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
F2-13 (INJ1) - F4-1 (E1)	Engine switch on (IG)	4.5 to 5.5 V
F2-12 (INJ2) - F4-1 (E1)	Engine switch on (IG)	4.5 to 5.5 V
F2-15 (INJ3) - F4-1 (E1)	Engine switch on (IG)	4.5 to 5.5 V

Reconnect the injector driver (EDU) connector.

REPLACE ECM Click here

REPLACE INJECTOR DRIVER Click here

INSPECT FUEL INJECTOR FOR DIRECT INJECTION (RESISTANCE)
1. Check the resistance of the fuel injector for direct injection Click here.
  
  Tech Tips
  
  Perform "Inspection After Repair" after replacing the fuel injector assembly (for direct injection) Click here.
NG
REPLACE FUEL INJECTOR FOR DIRECT INJECTION Click here

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (INJECTOR DRIVER - FUEL INJECTOR FOR DIRECT INJECTION)