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 - ]: Procedure
WARNING: This page is about a different car, the 2021 Toyota Avalon. 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 D1-1 (#1) - Body ground Engine switch on (IG) 11 to 14 V D2-1 (#2) - Body ground Engine switch on (IG) 11 to 14 V D3-1 (#3) - Body ground Engine switch on (IG) 11 to 14 V D4-1 (#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 D1-2 (#10) - C109-76 (#10) Always Below 1 Ω D2-2 (#20) - C109-75 (#20) Always Below 1 Ω D3-2 (#30) - C109-74 (#30) Always Below 1 Ω D4-2 (#40) - C109-73 (#40) Always Below 1 Ω D1-2 (#10) or C109-76 (#10) - Body ground and other terminals Always 10 kΩ or higher D2-2 (#20) or C109-75 (#20) - Body ground and other terminals Always 10 kΩ or higher D3-2 (#30) or C109-74 (#30) - Body ground and other terminals Always 10 kΩ or higher D4-2 (#40) or C109-73 (#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 - ]
Result:
NG
REPLACE PORT FUEL INJECTOR ASSEMBLY. Refer to REMOVAL [08/2020 - ]
- Inspect the port fuel injector assembly.