ECD SYSTEM, Diagnostic DTC:P0658, P0659

DTC Code DTC Name
P0658 5V Supply No.1 Voltage Supply Too Low
P0659 5V Supply No.1 Voltage Supply Too High

DESCRIPTION

The ECM supplies power voltage (5 V) to the fuel pressure sensor. Using this voltage, the fuel pressure sensor converts the fuel pressure in the common rail to an electrical signal, and sends it to the ECM.

DTC No. DTC Detection Condition Trouble Area Possible to Detect
Ignition Switch Engine Run
P0658

The power supply voltage from the ECM to the fuel pressure sensor is less than 4.7 V for 0.1 sec. or more.

(1 trip detection logic)

  • ECM

  • Fuel pressure sensor circuit

  • Fuel pressure sensor

 ON ON
P0659

The power supply voltage from the ECM to the fuel pressure sensor is more than 5.3 V for 0.1 sec. or more.

(1 trip detection logic)

  • ECM

  • Fuel pressure sensor circuit

  • Fuel pressure sensor

 ON ON

FAIL-SAFE

DTC No. Fail-safe Operation Fail-safe Deactivation Condition
P0658

  • PCV controller in open loop.

  • VCV adaptation deactivated.

  • Fuel pressure is 35 to 80 MPa (350 to 800 bars, 5,076 to 11,603 psi).

 Normal condition is restored.
P0659

  • PCV controller in open loop.

  • VCV adaptation deactivated.

  • Fuel pressure is 35 to 80 MPa (350 to 800 bars, 5,076 to 11,603 psi).

 Normal condition is restored.

WIRING DIAGRAM

A0137FWE01

INSPECTION PROCEDURE

Tech Tips


  • When DTC P0658 or P0659 is detected, check the sensor supply voltage by selecting the following menu items on the intelligent tester: Powertrain / Engine and ECT / Data List / Sensor Supply Voltage.

  • If the ECM is replaced, variant coding (variant coding indicates the presence of vehicle accessory items, A/C, etc.) should always be performed Click here.

  • Before removing the ECM and the peripheral parts, wait at least 3 minute after turning the ignition switch off (If the cooling fan is operating, remove the ECM and the peripheral parts after the fan stops.).

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (SENSOR SUPPLY VOLTAGE)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to the ON position and turn the intelligent tester on.

    3. Select the following menu items: Powertrain / Engine and ECT / Data List / Sensor Supply Voltage1.

    4. Read the value.

      Result
      4.75 to 5.25 V

    NG

    INSPECT ECM (VOLTAGE) Click here

    OK

    CHECK FOR INTERMITTENT PROBLEMS

  2. INSPECT ECM (VOLTAGE)


    1. A0137RNE02

      Disconnect the N5 fuel pressure sensor connector.

    2. Turn the ignition switch to the ON position.

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

      Standard voltage
      Tester Connection Specified Condition
      VPC (N5-3) - Body ground 4.7 to 5.3 V

    NG

    CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM) Click here

    OK

    REPLACE FUEL PRESSURE SENSOR

  3. CHECK HARNESS AND CONNECTOR (FUEL PRESSURE SENSOR - ECM)


    1. A013810E02

      Disconnect the B53 and B54 ECM connectors.

    2. Disconnect the N5 fuel pressure sensor connector.

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

      Standard resistance
      Check for open
      Tester Connection Specified Condition
      VPC (B53-13) - VPC (N5-3) Below 1 Ω
      PC (B54-6) - PC (N5-1) Below 1 Ω
      EPC (B54-7) - EPC(N5-2) Below 1 Ω
      Check for short
      Tester Connection Specified Condition
      VPC (B53-13) or VPC (N5-3) - Body ground 10 kΩ or higher
      PC (B54-6) or PC (N5-1) - Body ground 10 kΩ or higher
      EPC (B54-7) or EPC (N5-2) - Body ground 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK POWER SOURCE CIRCUIT


    1. Check that the battery voltage, ECM power source voltage, and the ground condition of the ECM are normal.

      OK
      The battery voltage, ECM power source voltage, and the ground condition of the ECM are normal.

      Tech Tips

      Make sure that the battery is not discharged during the inspection.


    NG

    REPAIR POWER SOURCE CIRCUIT

    OK

    REPLACE ECM