ECD SYSTEM, Diagnostic DTC:P2670, P2671

DTC Code DTC Name
P2670 5V Supply No.2 Voltage Supply Too Low
P2671 5V Supply No.2 Voltage Supply Too High

DESCRIPTION

The accelerator pedal position sensor is connected to the ECM. The 5 V power source voltage in the ECM is applied to the accelerator position sensor from terminal SGE. Using this voltage, the accelerator pedal position sensor converts the accelerator pedal angle to an electrical signal, and sends it to the ECM.

DTC No. DTC Detection Condition Trouble Area Possible to Detect
Ignition Switch Engine Run
P2670

The output voltage from the ECM is less than 4.7 V for 0.1 sec. or more.

(1 trip detection logic)

  • Accelerator pedal position sensor

  • Accelerator pedal position sensor circuit

  • ECM

 ON ON
P2671

The output voltage from the ECM is more than 5.3 V for 0.1 sec. or more.

(1 trip detection logic)

  • Accelerator pedal position sensor

  • Accelerator pedal position sensor circuit

  • ECM

 ON ON

FAIL-SAFE

DTC No. Fail-safe Operation Fail-safe Deactivation Condition
P2670

  • 1,200 rpm is used as the idle speed

  • 0% is used as the accelerator pedal opening angle.

 Normal condition is restored.
P2671

  • 1,200 rpm is used as the idle speed

  • 0% is used as the accelerator pedal opening angle.

 Normal condition is restored.

WIRING DIAGRAM

A0138BWE02

INSPECTION PROCEDURE

Tech Tips


  • When DTC P2670 or P2671 is detected, check the accelerator pedal position sensor supply voltage by selecting the following menu items on the intelligent tester: Powertrain / Engine and ECT / Data List / Supply Volt2.

  • 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 OF INTELLIGENT TESTER (SENSOR VOLTAGE)


    1. Connect the intelligent tester to the DLC3.

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

    3. Select the following menu items: Powertrain / Engine and ECT / Supply Volt2.

    4. Read the value.

      Result
      Display Proceed To
      Other than below A
      4.75 to 5.25 V B

    B

    CHECK FOR INTERMITTENT PROBLEMS

    A

  2. INSPECT ECM (VOLTAGE)


    1. A013694E01

      Disconnect the A37 accelerator pedal position sensor connector.

    2. Turn the ignition switch ON.

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

      Standard voltage
      Tester Connection Specified Condition
      SGE (A37-3) - Body ground 4.7 to 5.3 V

    NG

    REPLACE ACCELERATOR PEDAL POSITION SENSOR

    OK

  3. CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL POSITION SENSOR - ECM)


    1. A01376ZE03

      Disconnect the A35 (A36) ECM connector.

    2. Disconnect the A37 accelerator pedal position sensor connector.

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

      Standard resistance (Check for open)
      LHD
      Tester Connection Specified Condition
      PVS1 (A35-27) - PVS1 (A37-4) Below 1 Ω
      PVS2 (A35-10) - PVS2 (A37-2) Below 1 Ω
      SS2E (A35-26) - SS2E (A37-1) Below 1 Ω
      RHD
      Tester Connection Specified Condition
      PVS1 (A36-27) - PVS1 (A37-4) Below 1 Ω
      PVS2 (A36-10) - PVS2 (A37-2) Below 1 Ω
      SS2E (A36-26) - SS2E (A37-1) Below 1 Ω
      Standard resistance (Check for short)
      LHD
      Tester Connection Specified Condition
      PVS1 (A35-27) or PVS1 (A37-4) - Body ground 10 kΩ or higher
      PVS2 (A35-10) or PVS2 (A37-2) - Body ground 10 kΩ or higher
      SS2E (A35-26) or SS2E (A37-1) - Body ground 10 kΩ or higher
      RHD
      Tester Connection Specified Condition
      PVS1 (A36-27) or PVS1 (A37-4) - Body ground 10 kΩ or higher
      PVS2 (A36-10) or PVS2 (A37-2) - Body ground 10 kΩ or higher
      SS2E (A36-26) or SS2E (A37-1) - 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