Lexus ES: Cylinder 1 Injector "B" Circuit Open (P21CF13,P21D013-P21D413)

Lexus ES (XZ10) Service Manual / Engine & Hybrid System / 2gr-fks (engine Control) / Sfi System / Cylinder 1 Injector "B" Circuit Open (P21CF13,P21D013-P21D413)

DESCRIPTION

The D-4S system has two injection systems. One is an in-cylinder direct injection system that directly injects pressurized fuel into the combustion chamber. The other is an intake port injection system. The ECM determines the percentage of direct injection and port injection necessary in accordance with the engine speed and load.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
P21CF13	Cylinder 1 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21CF
P21D013	Cylinder 2 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21D0
P21D113	Cylinder 3 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21D1
P21D213	Cylinder 4 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21D2
P21D313	Cylinder 5 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21D3
P21D413	Cylinder 6 Injector "B" Circuit Open	Current is not applied to the injector 10 times or more with the engine running (1 trip detection logic).	Open or short in port fuel injector assembly circuit Port fuel injector assembly ECM	Comes on	DTC stored	SAE Code: P21D4

MONITOR DESCRIPTION

The ECM monitors the injection control of the port fuel injector assemblies. If a malfunction is detected in a port fuel injector assembly circuit, the ECM cancels the injection control for the corresponding cylinder, illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Related DTCs	P21CF: Port injector (cylinder 1) circuit/open P21D0: Port injector (cylinder 2) circuit/open P21D1: Port injector (cylinder 3) circuit/open P21D2: Port injector (cylinder 4) circuit/open P21D3: Port injector (cylinder 5) circuit/open P21D4: Port injector (cylinder 6) circuit/open
Required Sensors/Components (Main)	Port fuel injector assembly (cylinder 1 to 6)
Required Sensors/Components (Related)	-
Frequency of Operation	Continuous
Duration	10 times
MIL Operation	Immediate
Sequence of Operation	None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored	None
All of the following conditions are met	-
Battery voltage	8 V or higher
Fuel cut	Off
Synchronous injection	Operating
Engine switch	On (IG)
Either of the following conditions is met	Condition A or B
A. Engine	Running
B. Starter	On
Injection time	Higher than 0 second

TYPICAL MALFUNCTION THRESHOLDS

Confirmed injection signal

No signal

CONFIRMATION DRIVING PATTERN

HINT:

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
Click here
When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Click here

Connect the Techstream to the DLC3.
Turn the engine switch on (IG).
Turn the Techstream 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.
Start the engine [A].
Idle the engine for 3 minutes or more [B].
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
Read the DTCs [B].
HINT:
- 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: P21CF13, P21D013, P21D113, P21D213, P212313 or P212413.

Check the DTC judgment result.

Techstream 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

HINT:

If the judgment result is NORMAL, the system is normal.
If the judgment result is ABNORMAL, the system has a malfunction.
If the judgment result is INCOMPLETE, perform steps [B] through [C] again.
[A] to [C]: Normal judgment procedure.
The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.
When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following 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 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

1.	CHECK DTCS OUTPUT (IN ADDITION TO DTC P21CF13, P21D013, P21D113, P21D213, P21D313 OR P21D413)

(a) Connect the Techstream to the DLC3.

(b) Turn the engine switch on (IG).

(d) Enter the following menus: Powertrain / Engine / Trouble Codes.

(e) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result	Proceed to
P21CF13, P21D013, P21D113, P21D213, P21D313 or P21D413 is output	A
P21CF13, P21D013, P21D113, P22D213, P21D313 and P21D413 are output	B

REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - PORT FUEL INJECTOR ASSEMBLY)

2.	CHECK TERMINAL VOLTAGE (POWER SOURCE OF PORT FUEL INJECTOR ASSEMBLY)

*a	Front view of wire harness connector (to Port Fuel Injector Assembly)
*b	No. 1 Cylinder or No. 6 Cylinder
*c	No. 3 Cylinder or No. 4 Cylinder
*d	No. 2 Cylinder or No. 5 Cylinder

(a) Disconnect the port fuel injector assembly connector.

(b) Turn the engine switch on (IG).

Standard Voltage:

Tester Connection	Condition	Specified Condition
D21-1 (#7) - Body ground	Engine switch on (IG)	11 to 14 V
D18-1 (#7) - Body ground	Engine switch on (IG)	11 to 14 V
D22-1 (#9) - Body ground	Engine switch on (IG)	11 to 14 V
D19-1 (#9) - Body ground	Engine switch on (IG)	11 to 14 V
D23-1 (#11) - Body ground	Engine switch on (IG)	11 to 14 V
D20-1 (#11) - Body ground	Engine switch on (IG)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - PORT FUEL INJECTOR ASSEMBLY)

3.	CHECK HARNESS AND CONNECTOR (PORT FUEL INJECTOR ASSEMBLY - ECM)

(a) Disconnect the ECM connector.

(b) Disconnect the port fuel injector assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
D21-2 (#70) - C32-45 (#10)	Always	Below 1 Ω
D18-2 (#70) - C32-40 (#60)	Always	Below 1 Ω
D22-2 (#90) - C32-41 (#30)	Always	Below 1 Ω
D19-2 (#90) - C32-44 (#40)	Always	Below 1 Ω
D23-2 (#110) - C32-42 (#50)	Always	Below 1 Ω
D20-2 (#110) - C32-43 (#20)	Always	Below 1 Ω
D21-2 (#70) or C32-45 (#10) - Body ground and other terminals	Always	10 kΩ or higher
D18-2 (#70) or C32-40 (#60) - Body ground and other terminals	Always	10 kΩ or higher
D22-2 (#90) or C32-41 (#30) - Body ground and other terminals	Always	10 kΩ or higher
D19-2 (#90) or C32-44 (#40) - Body ground and other terminals	Always	10 kΩ or higher
D23-2 (#110) or C32-42 (#50) - Body ground and other terminals	Always	10 kΩ or higher
D20-2 (#110) or C32-43 (#20) - Body ground and other terminals	Always	10 kΩ or higher

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	INSPECT PORT FUEL INJECTOR ASSEMBLY (RESISTANCE)

(a) Inspect the port fuel injector assembly.

Click here

HINT:

Perform "Inspection After Repair" after replacing the port fuel injector assembly.

Click here

REPLACE ECM

REPLACE PORT FUEL INJECTOR ASSEMBLY

SEE MORE:

Parts Location

PARTS LOCATION ILLUSTRATION *1 ECM *2 FUEL TANK ASSEMBLY *3 FUEL PUMP CONTROL ECU *4 FUEL SUCTION TUBE WITH PUMP AND GAUGE ASSEMBLY - FUEL PUMP (for Low Pressure) - FUEL SENDER GAUGE ASSEMBLY - FUEL MAIN VALVE ASSEMBLY (for Low Pressure) - FUEL MAIN VALVE ASSEMBLY (for High Press

Removal

REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during direct fuel injector assembly removal/installation are shown below. Necessary Procedures After Parts Rem

Lexus ES: Cylinder 1 Injector "B" Circuit Open (P21CF13,P21D013-P21D413)

READ NEXT:

A/F (O2) Sensor Positive Current Control Bank 1 Sensor 1 Circuit Short to Ground (P223711,...,P225412)

Evaporative Emission System Switching Valve Control Circuit Actuator Stuck Off (P24187F)

ECM/PCM Engine Off Timer Performance Signal Invalid (P261029,P261093)

SEE MORE:

Parts Location

Removal