RM3660EC _51 Engine / Hybrid System _080777 NR Series ENGINE CONTROL _0393969 SFI SYSTEM C

NR Series ENGINE CONTROL  SFI SYSTEM  P212012  Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Battery  


DESCRIPTION

HINT:

These DTCs relate to the accelerator pedal position sensor.


The accelerator pedal position sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). This sensor is a non-contact type sensor and uses Hall-effect elements in order to yield accurate signals even in extreme driving conditions, such as at high speeds as well as very low speeds. The voltage, which is applied to terminals VPA and VPA2 of the ECM, varies between 0.5 V and 4.75 V in proportion to the operating angle of the accelerator pedal (throttle valve). A signal from VPA indicates the actual accelerator pedal opening angle (throttle valve opening angle) and is used for engine control. A signal from VPA2 conveys the status of the VPA circuit and is used to check the accelerator pedal position sensor itself.

The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2, and controls the throttle actuator according to these signals.

A255815E70
4.333,2.031 4.208,1.948 false 4.323,2.198 4.208,2.146 false 4.344,2.24 4.229,2.333 false 4.344,2.396 4.229,2.51 false 4.344,2.917 4.219,2.917 false 4.354,3.125 4.208,3.125 false 0.844,2.875 0.552,3.281 false 1.063,2.198 1.26,1.365 1.26,1.365 1.396,1.365 false 4.333,1.833 3.844,0.938 false 1.063,2.563 0.927,1.823 false 0.927,1.823 0.854,1.823 false 1.302,3.615 1.146,3.615 1.146,3.615 1,3.26 false 0.292,3.802 1.969,4.177 1.677,0.375 10 false Accelerator Pedal Position Sensor 1.448,1.302 1.927,1.479 0.479,0.177 10 false Magnet 0.313,1.74 0.844,1.917 0.531,0.177 10 false IC No. 1 0.313,3.313 0.844,3.49 0.531,0.177 10 false IC No. 2 2.063,1.74 2.531,1.917 0.469,0.177 10 false VPA 2.063,2.073 2.552,2.271 0.49,0.198 10 false EPA 2.063,2.385 2.583,2.563 0.521,0.177 10 false VCPA 2.063,2.688 2.573,2.865 0.51,0.177 10 false VPA2 2.063,3 2.563,3.198 0.5,0.198 10 false EPA2 2.063,3.323 2.583,3.5 0.521,0.177 10 false VCP2 2.677,3.76 3,3.938 0.323,0.177 10 false ECM 4.271,1.542 4.427,1.719 0.156,0.177 10 false *1 5.865,1.542 6.021,1.719 0.156,0.177 10 false *2 3.917,1.854 4.208,2.031 0.292,0.177 10 false 4.55 3.844,2.063 4.208,2.24 0.365,0.177 10 false 3.988 3.938,2.281 4.229,2.458 0.292,0.177 10 false 3.75 3.875,2.469 4.24,2.646 0.365,0.177 10 false 3.188 3.969,2.823 4.271,3 0.302,0.177 10 false 1.6 3.979,3.042 4.281,3.219 0.302,0.177 10 false 0.8 4.406,3.344 4.698,3.521 0.292,0.177 10 false 0.29 4.26,3.594 4.417,3.771 0.156,0.177 10 false 0 5.781,3.594 6.073,3.771 0.292,0.177 10 false 12.4 4.677,3.583 5.604,3.823 0.927,0.24 10 false Usable Range 4.667,3.896 7.167,4.094 2.5,0.198 10 false Accelerator Pedal Angle (°) 4.344,4.656 6.625,4.833 2.281,0.177 10 false *1: Accelerator Pedal Fully Released 4.344,4.969 6.729,5.135 2.385,0.167 10 false *2: Accelerator Pedal Fully Depressed 2.156,0.813 3.854,1.167 1.698,0.354 10 false Accelerator Pedal Position Sensor Output Voltage (V) 6.479,2.281 6.927,2.51 0.448,0.229 10 false VPA 6.438,1.823 6.865,2 0.427,0.177 10 false VPA2 1.375,3.531 1.854,3.708 0.479,0.177 10 false Magnet

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P212012 Throttle/Pedal Position Sensor/Switch "D" Circuit Short to Battery Diagnosis Condition:
·

Ignition switch ON


Abnormal condition:
·

VPA is 4.8 V or higher.


Malfunction Time:
·

2 seconds or more


Trip logic:
·

1 trip detection logic


Detection Conditions:
·

Continuous


Sensors/components used for detection:
·

Accelerator pedal sensor assembly


·

Accelerator pedal sensor assembly

·

Open in EPA circuit

·

Short in VPA circuit

·

ECM


Comes on DTC stored SAE Code: P2123

HINT:

When any of these DTCs are output, check the accelerator pedal position sensor voltage using the GTS. Enter the following menus: Powertrain / Engine / Data List / Accelerator Position Sensor No.1 Voltage and Accelerator Position Sensor No.2 Voltage.

Trouble Area Accelerator Pedal Fully Released Accelerator Pedal Fully Depressed
Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage
Open in VC circuit 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V 0 to 0.2 V
Open or ground short in VPA circuit 0 to 0.2 V 1.2 to 2.0 V 0 to 0.2 V 3.4 to 4.75 V
Open or ground short in VPA2 circuit 0.5 to 1.1 V 0 to 0.2 V 2.6 to 4.5 V 0 to 0.2 V
Open in EPA circuit 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V 4.5 to 4.98 V
Normal condition 0.5 to 1.1 V 1.2 to 2.0 V 2.6 to 4.5 V 3.4 to 4.75 V


HINT:

Accelerator pedal positions are expressed as voltages.


MONITOR DESCRIPTION

When the ignition switch is turned to ON and the VPA voltage is 4.8 V or higher for 2 seconds or more, the ECM determines that the accelerator pedal sensor assembly circuit is malfunctioning and illuminates the MIL and stores a DTC.

MONITOR STRATEGY

Required Sensors/Components Accelerator pedal sensor assembly
Frequency of Operation Continuous

CONFIRMATION DRIVING PATTERN

HINT:
·

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 hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR

·

When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DTC CHECK / CLEAR



A403176E06
2.177,2.438 2.469,1.958 2.469,1.958 2.625,1.958 false 4.677,2.448 4.969,1.969 4.969,1.969 5.125,1.969 false 3.677,1.906 2.844,1.26 2.844,1.26 3,1.26 false 0.198,0.125 3.719,0.323 3.521,0.198 10 false Accelerator Pedal State 0.865,0.469 1.708,0.76 0.844,0.292 10 false Depressed 0.938,0.896 1.781,1.188 0.844,0.292 10 false Released 0.448,2.354 2.208,2.688 1.76,0.333 10 false Ignition Switch ON 2.177,2.5 2.5,2.75 0.323,0.25 10 false [A] 3.875,1.906 4.198,2.156 0.323,0.25 10 false [B] 4.385,3.427 4.708,3.677 0.323,0.25 10 false [C] 2.635,3.083 3.948,3.344 1.313,0.26 10 false 5 seconds or more 2.719,1.875 3.469,2.104 0.75,0.229 10 false Released 5.208,1.896 5.958,2.125 0.75,0.229 10 false Released 3.083,1.188 3.833,1.417 0.75,0.229 10 false Depressed

1.

Connect the GTS to the DLC3.

2.

Turn the ignition switch to ON.

3.

Turn the GTS on.

4.

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

5.

Turn the ignition switch off and wait for at least 30 seconds.

6.

Turn the ignition switch to ON [A].

7.

Turn the GTS on.

8.

Fully depress and release the accelerator pedal [B].

9.

Check that 5 seconds or more have elapsed since the ignition switch to ON.

10.

Enter the following menus: Powertrain / Engine / Trouble Codes [C].

11.

Read the pending DTCs.

HINT:
·

If a pending DTC is output, the system is malfunctioning.

·

If a pending DTC is not output, perform the following procedure.



12.

Enter the following menus: Powertrain / Engine / Utility / All Readiness.

13.

Proceed to the next screen and enter the DTC to be checked.

14.

Check the DTC judgment result.

GTS Display Description
NORMAL
·

DTC judgment completed

·

System normal


ABNORMAL
·

DTC judgment completed

·

System abnormal


INCOMPLETE
·

DTC judgment not completed

·

Perform driving pattern after confirming DTC enabling conditions



HINT:
·

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

·

If the judgment result is ABNORMAL, the system is malfunctioning.

·

If the judgment result is INCOMPLETE, perform steps [B] through [C] again.

·

[A] to [C]: Normal judgment procedure.

The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

·

When clearing the permanent DTCs, do not disconnect the cable from the battery terminal or attempt to clear the DTCs during this procedure, as doing so will clear the universal trip and normal judgment histories.




FAIL-SAFE

When these DTCs are stored, the ECM enters fail-safe mode. If either of the 2 sensor circuits malfunctions, the ECM limits the engine output. If both of the circuits malfunction, the ECM regards the accelerator pedal as being released. As a result, the throttle valve is closed and the engine idles.

Fail-safe mode continues until a pass condition is detected, and the ignition switch is turned off.

WIRING DIAGRAM

A403187E14
0.438,3.167 2.781,3.583 2.344,0.417 10 false Accelerator Pedal Sensor Assembly 0.115,3.167 0.469,3.375 0.354,0.208 10 false A54 2.042,0.5 2.583,0.708 0.542,0.208 10 false 6 1.573,1.063 2.115,1.271 0.542,0.208 10 false EPA 1.479,1.469 2.021,1.677 0.542,0.208 10 false VCPA 1.5,1.875 2.042,2.083 0.542,0.208 10 false VPA2 1.5,2.292 2.042,2.5 0.542,0.208 10 false EPA2 1.5,2.708 2.042,2.917 0.542,0.208 10 false VCP2 1.573,0.615 2.115,0.823 0.542,0.208 10 false VPA 2.042,0.917 2.583,1.125 0.542,0.208 10 false 5 2.042,1.333 2.583,1.542 0.542,0.208 10 false 4 2.031,1.75 2.573,1.958 0.542,0.208 10 false 3 2.031,2.167 2.573,2.375 0.542,0.208 10 false 2 2.031,2.594 2.573,2.802 0.542,0.208 10 false 1 5.656,3.177 6.198,3.385 0.542,0.208 10 false A46 5.99,3.167 6.531,3.375 0.542,0.208 10 false ECM 5.635,0.5 6.177,0.708 0.542,0.208 10 false VPA 5.604,1.177 6.146,1.385 0.542,0.208 10 false EPA 5.615,1.365 6.156,1.573 0.542,0.208 10 false VCPA 5.615,1.76 6.156,1.969 0.542,0.208 10 false VPA2 5.625,2.417 6.167,2.625 0.542,0.208 10 false EPA2 5.625,2.604 6.167,2.813 0.542,0.208 10 false VCP2 5.281,0.49 5.521,0.708 0.24,0.219 10 false 47 5.281,0.906 5.521,1.125 0.24,0.219 10 false 48 5.281,1.323 5.521,1.542 0.24,0.219 10 false 49 5.281,1.74 5.521,1.958 0.24,0.219 10 false 50 5.281,2.156 5.521,2.375 0.24,0.219 10 false 51 5.281,2.583 5.521,2.802 0.24,0.219 10 false 52 6.344,1.24 6.677,1.469 0.333,0.229 10 false 5 V 6.344,2.5 6.677,2.729 0.333,0.229 10 false 5 V 5.833,0.865 6.365,1.052 0.531,0.188 10 false 39 kΩ 5.823,2.104 6.354,2.292 0.531,0.188 10 false 39 kΩ

CAUTION / NOTICE / HINT

HINT:

Read Freeze Frame Data using the GTS. The ECM records vehicle and driving condition information as Freeze Frame Data the moment a DTC is stored. When troubleshooting, Freeze Frame Data can help determine if the vehicle was moving or stationary, if the engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.


PROCEDURE

1.CHECK TERMINAL VOLTAGE (ACCELERATOR PEDAL SENSOR ASSEMBLY)
A372411C77
0.229,1 0.604,1.26 0.375,0.26 2.615,1.74 2.167,1.177 true 0.292,1.042 0.75,1.24 0.458,0.198 10 false A54 2.5,1.771 2.958,1.969 0.458,0.198 10 false VPA 0.24,0.208 0.698,0.406 0.458,0.198 10 false *a
*a Front view of wire harness connector
(to Accelerator Pedal Sensor Assembly)


HINT:

Make sure that the connector is properly connected. If it is not, securely connect it and check for DTCs again.


a.

Disconnect the accelerator pedal sensor assembly connector.


b.

Turn the ignition switch to ON.


c.

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

Standard Voltage:
Tester Connection Condition Specified Condition
A54-6 (VPA) - Body ground Ignition switch ON Below 1 V


HINT:

If the value differs from standard, there may be a short in the power source circuit.



Result:
Proceed to
OK
NG



OK

2.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - BODY GROUND)

NG

4.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM)
2.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - BODY GROUND)
a.

Disconnect the accelerator pedal sensor assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A54-5 (EPA) - Body ground Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ACCELERATOR PEDAL(W/SENSOR) ROD ASSEMBLY

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ACCELERATOR PEDAL>REMOVAL


NG

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

Disconnect the accelerator pedal sensor assembly connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A54-5 (EPA) - A46-48 (EPA) Always Below 1 Ω



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM)
a.

Disconnect the accelerator pedal sensor assembly connector.


b.

Disconnect the ECM connector.


c.

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

Standard Resistance:
Tester Connection Condition Specified Condition
A54-6 (VPA) or A46-47 (VPA) - Body ground and other terminals Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE ECM

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>ECM>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR