Toyota Yaris: Sfi System / Cylinder 1 Injector "B" Circuit Open (P21CF13,P21D013,P21D113)

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Engine & Hybrid System / G16e-gts (engine Control) / Sfi System / Cylinder 1 Injector "B" Circuit Open (P21CF13,P21D013,P21D113)

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

Note

P21CF13

Cylinder 1 Injector "B" Circuit Open

Open or short in port fuel injector assembly (1 trip detection logic).
  • Open or short in port fuel injector assembly circuit
  • Port fuel injector assembly
  • IGP relay
  • ECM

Comes on

SAE: P21CF

P21D013

Cylinder 2 Injector "B" Circuit Open

Open or short in port fuel injector assembly (1 trip detection logic).
  • Open or short in port fuel injector assembly circuit
  • Port fuel injector assembly
  • IGP relay
  • ECM

Comes on

SAE: P21D0

P21D113

Cylinder 3 Injector "B" Circuit Open

Open or short in port fuel injector assembly (1 trip detection logic).
  • Open or short in port fuel injector assembly circuit
  • Port fuel injector assembly
  • IGP relay
  • ECM

Comes on

SAE: P21D1

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

Required Sensors/Components

Port fuel injector assembly (cylinder 1 to 6)

Frequency of Operation

Continuous

CONFIRMATION DRIVING PATTERN

  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON.
  3. Turn the GTS on.
  4. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  5. Turn the ignition switch off and wait for at least 30 seconds.
  6. Start the engine [A].
  7. Idle the engine for 3 minutes or more [B].
  8. Turn the GTS on.
  9. Enter the following menus: Powertrain / Engine / Trouble Codes [C].
  10. Read the DTCs.

    HINT:

    • If a pending DTC is output, the system is malfunctioning.
    • If a pending DTC is not output, perform the following procedure.
  11. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
  12. Input the DTC: P21CF13, P21D013 or P21D113.
  13. 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

    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.

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 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

1.

CHECK DTCS OUTPUT (IN ADDITION TO DTC P21CF13, P21D013 OR P21D113)

(a) Read the DTCs.

Powertrain > Engine > Trouble Codes

Result

Proceed to

P21CF13, P21D013 or P21D113 is output

A

P21CF13, P21D013 or P21D113 are output

B
B

REPAIR OR REPLACE HARNESS OR CONNECTOR (IGP RELAY - PORT FUEL INJECTOR ASSEMBLY)
A

2.

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

(a) Disconnect the port fuel injector assembly connector.

(b) Turn the ignition switch to ON.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

E1-1(#1) - Body ground

Ignition switch ON

11 to 14 V

E2-1(#2) - Body ground

Ignition switch ON

11 to 14 V

E3-1(#3) - Body ground

Ignition switch ON

11 to 14 V

*a

Front view of wire harness connector

(to Port Fuel Injector Assembly)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR (IGP RELAY - PORT FUEL INJECTOR ASSEMBLY)
OK

3.

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

(a) Disconnect the ECM connector.

(b) Disconnect the port fuel injector assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

E1-2(#10) - D104-52(#10)

Always

Below 1 Ω

E2-2(#20) - D104-51(#20)

Always

Below 1 Ω

E3-2(#30) - D104-50(#30)

Always

Below 1 Ω

E1-2(#10) or D104-52(#10) - Body ground and other terminals

Always

10 kΩ or higher

E2-2(#20) or D104-51(#20) - Body ground and other terminals

Always

10 kΩ or higher

E3-2(#30) or D104-50(#30) - Body ground and other terminals

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

4.

INSPECT PORT FUEL INJECTOR ASSEMBLY (RESISTANCE)

Click here

HINT:

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

Click here

OK

REPLACE ECM

NG

REPLACE PORT FUEL INJECTOR ASSEMBLY

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