HYBRID CONTROL SYSTEM, Diagnostic DTC:P212012, P212014, P21201C, P21201F, P212512, P212514, P21251C, P21251F, P213800, P21382B

DTC Code DTC Name
P212012 Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Auxiliary Battery
P212014 Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Ground or Open
P21201C Throttle/Pedal Position Sensor/Switch "D" Voltage Out of Range
P21201F Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent
P212512 Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Auxiliary Battery
P212514 Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Ground or Open
P21251C Throttle/Pedal Position Sensor/Switch "E" Voltage Out of Range
P21251F Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent
P213800 Throttle/Pedal Position Sensor/Switch "D"/" E" Voltage Correlation
P21382B Throttle/Pedal Position Sensor/Switch "D"/"E" Signal Cross Coupled

DTC SUMMARY


  1. MALFUNCTION DESCRIPTION

    The hybrid vehicle control ECU calculates the accelerator pedal opening angle based on the output voltage of the main sensor (VPA) and sub sensor (VPA2) of the accelerator pedal sensor assembly. If the output voltage of either the main sensor (VPA) or sub sensor (VPA2) deviates, a malfunction will be detected.

    The cause of this malfunction may be one of the following:


    • Accelerator pedal sensor assembly malfunction

    • Wire harness or connector malfunction

    • Hybrid vehicle control ECU malfunction

DESCRIPTION

The accelerator pedal position sensor is built into the accelerator pedal sensor assembly and detects how much the pedal is depressed. This is a non-contact sensor with Hall elements. There are 2 outputs from the sensor. One is used to detect the accelerator pedal position and the other is used as a confirmation to allow the detection of a malfunction in the sensor itself. Voltage is output from the accelerator pedal position sensor to terminals VPA and VPA2 of the hybrid vehicle control ECU. This voltage varies from 0 to 5 V in accordance with the accelerator pedal position. Terminal VPA2 is primarily used to detect a malfunction in the sensor itself. The hybrid vehicle control ECU determines the current accelerator pedal position and controls the hybrid control system based on signals received by terminals VPA and VPA2.

B006HZ4E21
DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate
P212012 Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Auxiliary Battery

Short to +B in the main sensor circuit:

The main sensor voltage is 4.8 V or more for 2 seconds.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P212014 Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Ground or Open

Open or short to ground in the main sensor circuit:

The main sensor voltage is 0.4 V or less for 0.5 seconds.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P21201C Throttle/Pedal Position Sensor/Switch "D" Voltage Out of Range

Internal malfunction in the main sensor:

Main sensor output changes rapidly (detected when there are no circuit malfunctions such as an open or short).

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P21201F Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent

Main sensor circuit wiring malfunction or level is not stable:

Main sensor voltage is 0.4 V or less or 4.8 V or more for a certain period of time.

(Both of the following conditions are met: The main sensor voltage is 0.4 V or less for a certain period of time and 4.8 V or more for a certain period of time.)

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P212512 Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Auxiliary Battery

Short to +B in the sub sensor circuit:

Main sensor is normal and sub sensor voltage is 4.8 V or more for 2 seconds.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P212514 Throttle/Pedal Position Sensor/Switch "E" Circuit Short to Ground or Open

Open or short to ground in the sub sensor circuit:

The sub sensor voltage is 1.2 V or less for 0.5 seconds.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P21251C Throttle/Pedal Position Sensor/Switch "E" Voltage Out of Range

Internal malfunction of the sub sensor:

Sub sensor output changes rapidly (detected when there are no circuit malfunctions such as an open or short).

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P21251F Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent

Sub sensor circuit wiring malfunction or level is not stable:

When the main sensor circuit is normal, the sub sensor voltage is 1.2 V or less or 4.8 V or more for a certain period of time.

(Both of the following conditions are met: Sub sensor voltage is 1.2 V or less for a certain period of time, and the main sensor is normal and sub sensor voltage is 4.8 V or more for a certain period of time.)

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P213800 Throttle/Pedal Position Sensor/Switch "D"/" E" Voltage Correlation

Difference between the main sensor value and sub sensor value is large.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
P21382B Throttle/Pedal Position Sensor/Switch "D"/"E" Signal Cross Coupled

Main or sub sensor circuit wiring malfunction:

The difference in voltage between the main sensor and sub sensor is 0.02 V or less, or a low output malfunction continues in both the main and sub sensors for a certain period of time.

(1 trip detection logic)

  • Wire harness or connector

  • Accelerator pedal sensor assembly

  • Hybrid vehicle control ECU

 Does not come on

Master Warning Light:

Comes on
Related Data List
DTC No. Data List
P212012

  • Accelerator Position Sensor No. 1 Voltage %

  • Accelerator Position Sensor No. 2 Voltage %
P212014
P21201C
P21201F
P212512
P212514
P21251C
P21251F
P213800
P21382B

CONFIRMATION DRIVING PATTERN

Tech Tips

After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.

Click here


  1. Connect the GTS to the DLC3.

  2. Turn the power switch on (IG) and turn the GTS on.

  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).

  4. Turn the power switch off and wait for 2 minutes or more.

  5. Turn the power switch on (IG) and turn the GTS on.

  6. Wait for approximately 10 seconds with the power switch on (READY) and park (P) selected, then fully depress and release the accelerator pedal several times.

  7. Enter the following menus: Powertrain / Hybrid Control / Utility / All Readiness.

  8. Check the DTC judgment result.

    Tech Tips


    • If the judgment result shows NORMAL, the system is normal.

    • If the judgment result shows ABNORMAL, the system has a malfunction.

    • If the judgment result shows INCOMPLETE or N/A, perform driving pattern again.

WIRING DIAGRAM

B006HFWE46
*a Accelerator Pedal Sensor Assembly
*b Hybrid Vehicle Control ECU

PROCEDURE


  1. READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE %, ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE %)


    1. Connect the GTS to the DLC3.

    2. Turn the power switch on (IG).

    3. Enter the following menus: Powertrain / Hybrid Control / Data List / Accelerator Position Sensor No. 1 Voltage %, Accelerator Position Sensor No. 2 Voltage %.


      Powertrain > Hybrid Control > Data List
      Tester Display
      Accelerator Position Sensor No.1 Voltage %
      Accelerator Position Sensor No.2 Voltage %

    4. Read the Data List.

      Standard
      Tester Display Accelerator Pedal Condition Specified Condition
      Accelerator Position Sensor No. 1 Voltage % Not depressed 10 to 22%
      Fully depressed 52 to 90%
      Not depressed → Fully depressed → Not depressed (Accelerator pedal should be operated slowly) Value changes progressively
      Accelerator Position Sensor No. 2 Voltage % Not depressed 24 to 40%
      Fully depressed 68 to 99%
      Not depressed → Fully depressed → Not depressed (Accelerator pedal should be operated slowly) Value changes progressively

    5. Turn the power switch off.

      Result
      Proceed to
      OK
      NG

    OK

    CHECK FOR INTERMITTENT PROBLEMS Click here

    NG

  2. CHECK CONNECTOR CONNECTION CONDITION (ACCELERATOR PEDAL SENSOR ASSEMBLY CONNECTOR)


    1. B006J30

      Check the connector connections and contact pressure of the relevant terminals for the accelerator pedal sensor assembly connector.

      Click here

      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  3. CHECK CONNECTOR CONNECTION CONDITION (HYBRID VEHICLE CONTROL ECU CONNECTOR)

    Result
    Proceed to
    OK
    NG

    1. Check the connector connections and contact pressure of the relevant terminals for the hybrid vehicle control ECU connectors.

      Click here

      B006HM7C01
      *A for LHD *B for RHD
      OK
      The connectors are connected securely and there are no contact pressure problems.
      Result
      Proceed to
      OK
      NG

    NG

    CONNECT SECURELY

    OK

  4. CHECK HYBRID VEHICLE CONTROL ECU (CHECK VOLTAGE)


    1. Disconnect the A39 accelerator pedal sensor assembly connector.

    2. Turn the power switch on (IG).

    3. B006J5JC16
      *a

      Front view of wire harness connector

      (to Accelerator Pedal Sensor Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A39-4 (VCPA) - A39-5 (EPA) Power switch on (IG) 4.5 to 5.5 V
      A39-1 (VCP2) - A39-2 (EPA2) Power switch on (IG) 4.5 to 5.5 V

    4. Turn the power switch off.

    5. Reconnect the A39 accelerator pedal sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    NG

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL SENSOR ASSEMBLY) Click here

    OK

  5. CHECK HYBRID VEHICLE CONTROL ECU (CHECK RESISTANCE)


    1. Disconnect the A39 accelerator pedal sensor assembly connector.

    2. B006J5JC17
      *a

      Front view of wire harness connector

      (to Accelerator Pedal Sensor Assembly)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A39-6 (VPA) - A39-5 (EPA) Power switch off 28.00 to 41.61 kΩ
      A39-3 (VPA2) - A39-2 (EPA2) Power switch off 28.00 to 41.61 kΩ

    3. Reconnect the A39 accelerator pedal sensor assembly connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE ACCELERATOR PEDAL SENSOR ASSEMBLY Click here

    NG

    CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL SENSOR ASSEMBLY) Click here

  6. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL SENSOR ASSEMBLY)


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the A39 accelerator pedal sensor assembly connector.

    3. Turn the power switch on (IG).

    4. B006JALC10
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Accelerator Pedal Sensor Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A41-24 (VCPA) - Body ground Power switch on (IG) Below 1 V
      A41-37 (EPA) - Body ground Power switch on (IG) Below 1 V
      A41-26 (VCP2) - Body ground Power switch on (IG) Below 1 V
      A41-25 (EPA2) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A41-24 (VCPA) - A39-4 (VCPA) Power switch off Below 1 Ω
      A41-37 (EPA) - A39-5 (EPA) Power switch off Below 1 Ω
      A41-26 (VCP2) - A39-1 (VCP2) Power switch off Below 1 Ω
      A41-25 (EPA2) - A39-2 (EPA2) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A41-24 (VCPA) or A39-4 (VCPA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-37 (EPA) or A39-5 (EPA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-26 (VCP2) or A39-1 (VCP2) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-25 (EPA2) or A39-2 (EPA2) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Reconnect the A39 accelerator pedal sensor assembly connector.

    8. Reconnect the A41 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  7. CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU - ACCELERATOR PEDAL SENSOR ASSEMBLY)


    1. Disconnect the A41 hybrid vehicle control ECU connector.

    2. Disconnect the A39 accelerator pedal sensor assembly connector.

    3. Turn the power switch on (IG).

    4. B006JALC09
      *a

      Front view of wire harness connector

      (to Hybrid Vehicle Control ECU)
      *b

      Front view of wire harness connector

      (to Accelerator Pedal Sensor Assembly)

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      A41-36 (VPA) - Body ground Power switch on (IG) Below 1 V
      A41-38 (VPA2) - Body ground Power switch on (IG) Below 1 V
      A41-37 (EPA) - Body ground Power switch on (IG) Below 1 V
      A41-25 (EPA2) - Body ground Power switch on (IG) Below 1 V

      Note

      Turning the power switch on (IG) with the hybrid vehicle control ECU connector disconnected causes other DTCs to be stored. Clear the DTCs after performing this inspection.

    5. Turn the power switch off.

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      A41-36 (VPA) - A39-6 (VPA) Power switch off Below 1 Ω
      A41-37 (EPA) - A39-5 (EPA) Power switch off Below 1 Ω
      A41-38 (VPA2) - A39-3 (VPA2) Power switch off Below 1 Ω
      A41-25 (EPA2) - A39-2 (EPA2) Power switch off Below 1 Ω
      Standard Resistance (Check for Short)
      Tester Connection Condition Specified Condition
      A41-36 (VPA) or A39-6 (VPA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-37 (EPA) or A39-5 (EPA) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-38 (VPA2) or A39-3 (VPA2) - Body ground and other terminals Power switch off 10 kΩ or higher
      A41-25 (EPA2) or A39-2 (EPA2) - Body ground and other terminals Power switch off 10 kΩ or higher

    7. Reconnect the A39 accelerator pedal sensor assembly connector.

    8. Reconnect the A41 hybrid vehicle control ECU connector.

      Result
      Proceed to
      OK
      NG

    OK

    REPLACE HYBRID VEHICLE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR