NR Series ENGINE CONTROL SFI SYSTEM P21201C Throttle/Pedal Position Sensor/Switch "D" Circuit Voltage Out of Range P212099 Throttle/Pedal Position Sensor/Switch "D" Exceeded Learning Limit
DESCRIPTION
- HINT:
-
These DTCs relate to the accelerator pedal position sensor.
Refer to DTC P212012.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | Note |
|---|---|---|---|---|---|---|
| P21201C | Throttle/Pedal Position Sensor/Switch "D" Circuit Voltage Out of Range | Diagnosis Condition:
·
Ignition switch ON Abnormal condition: ·
Difference between VPA and VPA2 is greater than or equal to the specified value. 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 ·
ECM |
Comes on | DTC stored | SAE Code: P2121 |
| P212099 | Throttle/Pedal Position Sensor/Switch "D" Exceeded Learning Limit | Diagnosis Condition:
·
Ignition switch ON Abnormal condition: ·
Difference between VPA and VPA2 is less than 0.4 V, or higher than 1.2 V (learned value of accelerator off position). Malfunction Time: ·
- Trip logic: ·
1 trip detection logic Detection Conditions: ·
Continuous Sensors/components used for detection: ·
Accelerator pedal sensor assembly |
·
Accelerator pedal sensor assembly ·
ECM |
Comes on | DTC stored | SAE Code: P2121 |
MONITOR DESCRIPTION
- P21201C
-
When the ignition switch is turned to ON and the difference between VPA and VPA2 is greater than or equal to the specified value 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.
- P212099
-
When the ignition switch is turned to ON, the accelerator pedal is fully released and the difference in the calculated voltage of VPA and VPA2 is less than 0.4 V or higher than 1.2 V, 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.
·When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON [A].
Turn the GTS on.
Wait for 5 seconds after turning the ignition switch to ON.
Operate the accelerator pedal in accordance with the following procedure [B].
Enter the following menus: Powertrain / Engine / Data List / Accelerator Position Sensor No.1 Voltage % and Accelerator Position Sensor No.2 Voltage %.
Slowly depress the accelerator pedal until Accelerator Position Sensor No.1 Voltage % is approximately 30% and Accelerator Position Sensor No.2 Voltage % is approximately 46%, then slowly release the accelerator pedal.
Enter the following menus: Powertrain / Engine / Trouble Codes [C].
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.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Proceed to the next screen and enter the DTC to be checked.
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
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
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.
Read the DTCs.
- Powertrain > Engine > Trouble Codes
- 50001 372
- Result:
Result Proceed to DTC P21201C or P212099 is output A DTC P21201C or P212099 and other DTCs are output B
- HINT:
-
If any DTCs other than P21201C or P212099 are output, troubleshoot those DTCs first.
A
B
| *a | Fully Depressed |
| *b | Fully Released |
Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
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
Read the value displayed on the GTS.
- Standard Voltage:
Accelerator Pedal Operation Accelerator Position Sensor No.1 Voltage Accelerator Position Sensor No.2 Voltage Difference between Accelerator Position Sensor No.1 Voltage and Accelerator Position Sensor No.2 Voltage Fully Released 0.5 to 1.1 V 1.2 to 2.0 V More than 0.02 V Fully Depressed 2.6 to 4.5 V 3.4 to 4.75 V
- Result:
Proceed to OK NG
OK
NG