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

NR Series ENGINE CONTROL  SFI SYSTEM  P21201F  Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent  P21251F  Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent  


DESCRIPTION

HINT:

These DTCs relate to the accelerator pedal position sensor.


Refer to DTC P212012.

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>P212012

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory Note
P21201F Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent Diagnosis Condition:
·

Ignition switch ON


Abnormal condition:
·

VPA fluctuates rapidly beyond the upper and lower malfunction thresholds.


Malfunction Time:
·

0.5 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

·

Accelerator pedal sensor assembly circuit

·

ECM


Comes on DTC stored SAE Code: P2120
P21251F Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent Diagnosis Condition:
·

Ignition switch ON


Abnormal condition:
·

VPA2 fluctuates rapidly beyond the upper and lower malfunction thresholds.


Malfunction Time:
·

0.5 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

·

Accelerator pedal sensor assembly circuit

·

ECM


Comes on DTC stored SAE Code: P2125

MONITOR DESCRIPTION

P21201F

When the ignition switch is turned to ON and the voltage of VPA is 0.4 V or less, or 4.8 V or higher for 0.5 seconds or more, the ECM determines that the accelerator pedal sensor assembly circuit is malfunctioning and illuminates the MIL and stores a DTC.


P21251F

When the ignition switch is turned to ON and the voltage of VPA2 fluctuates rapidly beyond the upper and lower malfunction thresholds for 0.5 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

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.

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 DTC OUTPUT
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Trouble Codes.


e.

Check and record any DTCs and Freeze Frame Data.

Powertrain > Engine > Trouble Codes
50001 372

Result:
Proceed to
NEXT



NEXT

2.CLEAR DTC
2.CLEAR DTC
a.

Clear the DTCs.

Powertrain > Engine > Clear DTCs
50002 372

b.

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


Result:
Proceed to
NEXT



NEXT

3.CHECK WHETHER DTC OUTPUT RECURS (DTC 212012, P212014, P212512 OR P212514)
3.CHECK WHETHER DTC OUTPUT RECURS (DTC 212012, P212014, P212512 OR P212514)
a.

Turn the ignition switch to ON.


b.

Turn the GTS on.


c.

Enter the following menus: Powertrain / Engine / Trouble Codes.


d.

Read the DTCs.

Powertrain > Engine > Trouble Codes
50001 372
Result:
Result Proceed to
DTC P212012, P212014, P212512 or P212514 is output A
DTC P212012, P212014, P212512 or P212514 is not output B




A

GO TO DTC CHART

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


B

4.READ FREEZE FRAME DATA (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
4.READ FREEZE FRAME DATA (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Using the GTS, confirm the vehicle conditions recorded in the Freeze Frame Data which were present when the DTC was stored.

Powertrain > Engine > DTC(P21201F) > Freeze Frame Data
Tester Display
Accelerator Position Sensor No.1 Voltage
Accelerator Position Sensor No.2 Voltage
50040 372 87,88 P21201F
Result:
Freeze Frame Data Item Result Suspected Trouble Area Proceed to
Accelerator Position Sensor No.1 Voltage 0.4 V or less
·

Accelerator pedal sensor assembly

·

Wire harness or connector


A
Accelerator Position Sensor No.2 Voltage 1.2 V or less
Accelerator Position Sensor No.1 Voltage 4.8 V or higher
·

Wire harness or connector

·

ECM


B
Accelerator Position Sensor No.2 Voltage 4.8 V or higher




A

5.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)

B

7.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
5.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
A208621C05
0.719,1.75 1,1.969 0.281,0.219 10 *a 2.646,1.74 2.927,1.979 0.281,0.24 10 *b
*a Fully Depressed
*b Fully Released


a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Accelerator Position Sensor No.1 Voltage and Accelerator Position Sensor No.2 Voltage.

Powertrain > Engine > Data List
Tester Display
Accelerator Position Sensor No.1 Voltage
Accelerator Position Sensor No.2 Voltage
50003 372 87,88

e.

Fully depress and release the accelerator pedal quickly and repeatedly and confirm that the data monitor value changes in accordance with the operation of the accelerator pedal.

Standard Voltage:
Accelerator Pedal Operation Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage
Fully Released 0.5 to 1.1 V 1.2 to 2.0 V
Fully Depressed 2.6 to 4.5 V 3.4 to 4.75 V


Result:
Result Proceed to
The data monitor value changes in accordance with the operation of the accelerator pedal A
The data monitor value does not change in accordance with the operation of the accelerator pedal B




A

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

B

7.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
6.CHECK HARNESS AND CONNECTOR (ACCELERATOR PEDAL SENSOR ASSEMBLY - ECM)
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.

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) - A46-47 (VPA) Always Below 1 Ω
A54-5 (EPA) - A46-48 (EPA) Always Below 1 Ω
A54-4 (VCPA) - A46-49 (VCPA) Always Below 1 Ω
A54-3 (VPA2) - A46-50 (VPA2) Always Below 1 Ω
A54-2 (EPA2) - A46-51 (EPA2) Always Below 1 Ω
A54-1 (VCP2) - A46-52 (VCP2) Always Below 1 Ω
A54-6 (VPA) or A46-47 (VPA) - Body ground and other terminals Always 10 kΩ or higher
A54-5 (EPA) or A46-48 (EPA) - Body ground and other terminals Always 10 kΩ or higher
A54-4 (VCPA) or A46-49 (VCPA) - Body ground and other terminals Always 10 kΩ or higher
A54-3 (VPA2) or A46-50 (VPA2) - Body ground and other terminals Always 10 kΩ or higher
A54-1 (VCP2) or A46-52 (VCP2) - Body ground and other terminals Always 10 kΩ or higher
A54-2 (EPA2) or A46-51 (EPA2) - Body ground and other terminals Always 10 kΩ or higher



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

REPAIR OR REPLACE HARNESS OR CONNECTOR

7.READ VALUE USING GTS (ACCELERATOR POSITION SENSOR NO. 1 VOLTAGE AND ACCELERATOR POSITION SENSOR NO. 2 VOLTAGE)
a.

Connect the GTS to the DLC3.


b.

Turn the ignition switch to ON.


c.

Turn the GTS on.


d.

Enter the following menus: Powertrain / Engine / Data List / Accelerator Position Sensor No.1 Voltage and Accelerator Position Sensor No.2 Voltage.

Powertrain > Engine > Data List
Tester Display
Accelerator Position Sensor No.1 Voltage
Accelerator Position Sensor No.2 Voltage
50003 372 87,88

e.

While jiggling the ECM connector, confirm that the data monitor value changes.

HINT:
Standard Voltage:
Accelerator Pedal Operation Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage
Fully Released 0.5 to 1.1 V 1.2 to 2.0 V
Fully Depressed 2.6 to 4.5 V 3.4 to 4.75 V


Result:
Result Proceed to
The data monitor value does not change A
The data monitor value changes B




A

CHECK FOR INTERMITTENT PROBLEMS

Click hereEngine / Hybrid System>NR Series (ENGINE CONTROL)>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS


B

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

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) - A46-47 (VPA) Always Below 1 Ω
A54-5 (EPA) - A46-48 (EPA) Always Below 1 Ω
A54-4 (VCPA) - A46-49 (VCPA) Always Below 1 Ω
A54-3 (VPA2) - A46-50 (VPA2) Always Below 1 Ω
A54-2 (EPA2) - A46-51 (EPA2) Always Below 1 Ω
A54-1 (VCP2) - A46-52 (VCP2) Always Below 1 Ω
A54-6 (VPA) or A46-47 (VPA) - Body ground and other terminals Always 10 kΩ or higher
A54-5 (EPA) or A46-48 (EPA) - Body ground and other terminals Always 10 kΩ or higher
A54-4 (VCPA) or A46-49 (VCPA) - Body ground and other terminals Always 10 kΩ or higher
A54-3 (VPA2) or A46-50 (VPA2) - Body ground and other terminals Always 10 kΩ or higher
A54-1 (VCP2) or A46-52 (VCP2) - Body ground and other terminals Always 10 kΩ or higher
A54-2 (EPA2) or A46-51 (EPA2) - 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