DTC P2149 Fuel Injector Group 2 Supply Voltage Circuit (4JJ3 with DPD)

1. DTC P2149 description

The ECM calculates the optimum fuel injection ON time based on the data sent from various sensors. The ECM supplies high voltage to the injector charge voltage circuit, grounds the injector solenoid control circuit and drives the injectors of each cylinder. The injector charge voltage circuit shares a bus inside the ECM, and is divided into 2 banks: common power supply 1 and common power supply 2. Common power supply 1 serves the injectors of cylinders No. 1 and No. 4, and common power supply 2 serves the injectors of cylinders No. 2 and No. 3. If the ECM detects a malfunction in the common power supply 2 injector circuit, this DTC is set.

2. Condition for setting DTC P2149

Condition for running the DTC

  • The battery voltage is 9 to 16 V.
  • The ignition switch is ON.
  • The engine is running.

Condition for setting the DTC

  • The ECM detects that there is an open circuit, a short to ground, or a short to the voltage circuit in the common power supply 2 injector charge voltage circuit for 3 seconds or more.

3. Action taken when DTC P2149 sets

  • The ECM illuminates the MIL. Refer to Action taken when DTC sets - Type A.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

  • The ECM limits the fuel injection quantity.
  • The ECM inhibits pre-injection.
  • The ECM inhibits the EGR control.
  • The ECM inhibits the cruise control.

4. Condition for clearing DTC P2149

  • Refer to Conditions for clearing the MIL/DTC - Type A or Type B.

Refer to "51.Engine Control 1A.Troubleshooting(4JJ3 with DPD) DTC type definitions".

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