DTC P21CF-13: Cylinder 1 Injector "B" Circuit Open; DTC P21D0-13: Cylinder 2 Injector "B" Circuit Open; DTC P21D1-13: Cylinder 3 Injector "B" Circuit Open; DTC P21D2-13: Cylinder 4 Injector "B" Circuit Open [08/2020 - 08/2021]: Procedure
WARNING: This page is about a different car, the 2024 Lexus ES 250, 2023 Lexus ES 250, 2022 Lexus ES 250, and 2021 Lexus ES 250. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK DTCS OUTPUT (IN ADDITION TO DTC P21CF-13, P21D0-13, P21D1-13 OR P21D2-13)
- Connect the Techstream to the DLC3.
- Turn the engine switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Trouble Codes.
- Read the DTCs.
Powertrain > Engine > Trouble Codes
Result
Result Proceed to DTC P21CF-13, P21D0-13, P21D1-13 or P21D2-13 is output A DTC P21CF-13, P21D0-13, P21D1-13 and P21D2-13 are output B
Result:
B
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - PORT FUEL INJECTOR ASSEMBLY)
Result:
A
See step 2
- CHECK TERMINAL VOLTAGE (POWER SOURCE OF PORT FUEL INJECTOR ASSEMBLY)
*a Front view of wire harness connector
(to Port Fuel Injector Assembly)- Disconnect the port fuel injector assembly connector.
- Turn the engine switch on (IG).
- Measure the voltage according to the value(s) in the table below
Standard Voltage
Tester Connection Condition Specified Condition D13-1 (#1) - Body ground Engine switch on (IG) 11 to 14 V D14-1 (#2) - Body ground Engine switch on (IG) 11 to 14 V D15-1 (#3) - Body ground Engine switch on (IG) 11 to 14 V D16-1 (#4) - Body ground Engine switch on (IG) 11 to 14 V Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR (IG2 NO. 1 RELAY - PORT FUEL INJECTOR ASSEMBLY)
Result:
OK
See step 3
- CHECK HARNESS AND CONNECTOR (PORT FUEL INJECTOR ASSEMBLY - ECM)
- Disconnect the ECM connector.
- Disconnect the port fuel injector assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D13-2 (#10) - C77-76 (#10) Always Below 1 Ω D14-2 (#20) - C77-75 (#20) Always Below 1 Ω D15-2 (#30) - C77-74 (#30) Always Below 1 Ω D16-2 (#40) - C77-73 (#40) Always Below 1 Ω D13-2 (#10) or C77-76 (#10) - Body ground and other terminals Always 10 kΩ or higher D14-2 (#20) or C77-75 (#20) - Body ground and other terminals Always 10 kΩ or higher D15-2 (#30) or C77-74 (#30) - Body ground and other terminals Always 10 kΩ or higher D16-2 (#40) or C77-73 (#40) - Body ground and other terminals Always 10 kΩ or higher Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 4
- INSPECT PORT FUEL INJECTOR ASSEMBLY (RESISTANCE)
- Inspect the port fuel injector assembly.
Refer to INSPECTION [08/2020 - ]
HINT:
Perform "Inspection After Repair" after replacing the port fuel injector assembly.
Refer to INITIALIZATION [08/2020 - ]
Result
Proceed to OK NG
Result:
OK
REPLACE ECM. Refer to REMOVAL [08/2020 - 08/2021]
Result:
NG
REPLACE PORT FUEL INJECTOR ASSEMBLY. Refer to REMOVAL [08/2020 - 08/2021]
- Inspect the port fuel injector assembly.