ECD SYSTEM, Diagnostic DTC:19(2)

DTC Code DTC Name
19(2) Accelerator Pedal Position Sensor Circuit Mulfunction (Idle Switch/Range)

DESCRIPTION

Refer to DTC No. 19 (1) on page Click here.

DTC No. DTC Detecting Condition Trouble Area
19(2) Either the ECU sensor completed learning and when the electric potential difference of No. 1 and No. 2 sensors has become more than 1.2 V or less than 0.4 V.

  • Open or short in accelerator pedal position sensor circuit

  • Accelerator pedal position sensor

  • ECM

Either one of the followings continues more than 2.0 seconds. When the electrical potential difference of No. 1 and No. 2 sensors is beside the specified value.

(a) VPA2 is 4.9 V or more.

(b) Accelerator idling criterion voltage of No. 1 and No. 2 in less than 0.04 V.

WIRING DIAGRAM

Refer to DTC No. 19 (1) on page Click here.

INSPECTION PROCEDURE

Tech Tips

Read freeze frame data using intelligent tester. Because freeze frame records the engine conditions when the malfunction is detected. When troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

PROCEDURE


  1. CHECK ACCELERATOR LINK ASSEMBLY (CHECK VOLTAGE)


    1. A01KH3HE01

      Disconnect the accelerator pedal position sensor connector.

    2. Turn the ignition switch ON.

    3. Check the voltage between terminals of the accelerator pedal position sensor connector as shown in the table and illustration.

      Voltage

      Terminal

      (Positive terminal ←→ Negative terminal)

      		 Voltage
      VCP1 (4) ←→ Body ground 4.5 - 5.5 V
      VCP2 (6) ←→ Body ground

    NG

    CHECK ECM (CHECK VOLTAGE) Click here

    OK

  2. CHECK ECM (CHECK VOLTAGE)


    1. A01KGF1E01

      Turn the ignition switch ON.

    2. Check the voltage between terminals of the ECM connector as shown in the table and illustration.

      Voltage
      Accelerator pedal

      Terminal

      (Positive terminal ←→ Negative terminal)

      		 Voltage
      Fully closed VPA1 (E9-19) ←→ EP1 (E9-27) 0.5 - 1.1 V
      VPA2 (E9-28) ←→ EP2 (E9-24) 0.9 - 2.3 V
      Fully open VPA1 (E9-19) ←→ EP1 (E9-27) 3.0 - 4.6 V
      VPA2 (E9-28) ←→ EP2 (E9-24) 3.4 - 5.0 V

    OK

    CHECK AND REPLACE ECM Click here

    NG

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


    1. A01KEY6E01

      Disconnect the accelerator pedal position sensor connector.

    2. Disconnect the ECM (E9) connector.

    3. Check the continuity between terminals of the accelerator pedal position sensor and ECM connectors as shown in the illustration and table.

      Continuity (Check for open)

      Terminal

      (Accelerator pedal position sensor ←→ ECM)

      		 Standard
      VPA1 (5) ←→ VPA1 (E9-19) Continuity
      VPA2 (2) ←→ VPA2 (E9-28)
      Continuity (Check for short)

      Terminal

      (ECM ←→ ECM(Ground))

      		 Standard
      VPA1 (E9-19) ←→ E1 (E7-22) No continuity
      VPA2 (E9-28) ←→ E1 (E7-22)

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    REPAIR ACCELERATOR LINK ASSEMBLY

  4. CHECK ECM (CHECK VOLTAGE)


    1. A01KGF1E02

      Turn the ignition switch ON.

    2. Check the voltage between terminals of the ECM connector as shown in the table and illustration.

      Voltage

      Terminal

      (Positive terminal ←→ Negative terminal)

      		 Voltage
      VCP1 (E9-8) ←→ EP1 (E9-27) 4.5 - 5.5 V

    NG

    CHECK AND REPLACE ECM Click here

    OK

  5. CHECK WIRE HARNESS (ECM - ACCELERATOR PEDAL POSITION SENSOR)


    1. A01KEY6E03

      Disconnect the accelerator pedal position sensor connector.

    2. Disconnect the ECM (E9) connector.

    3. Check the continuity between terminals of the accelerator pedal position sensor and ECM connectors as shown in the illustration and table.

      Continuity (Check for open)

      Terminal

      (Accelerator pedal position sensor ←→ ECM)

      		 Standard
      VCP1 (4) ←→ VCP1 (E9-8) Continuity
      EP1 (1) ←→ EP1(E9-27)
      Continuity (Check for short)

      Terminal

      (ECM ←→ ECM(Ground))

      		 Standard
      VCP1 (E9-8) ←→ E1 (E7-22) No continuity
      EP1(E9-27) ←→ E1 (E7-22)

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    CHECK AND REPLACE ECM Click here