P2120

DTC P2120-152 Throttle / Pedal Position Sensor / Switch "D"Circuit
DTC P2121-106 Throttle / Pedal Position Sensor / Switch "D"Circuit Range / Performance
DTC P2122-104 Throttle / Pedal Position Sensor / Switch "D"Circuit Low Input
DTC P2123-105 Throttle / Pedal Position Sensor / Switch "D"Circuit High Input
DTC P2125-153 Throttle / Pedal Position Sensor / Switch "E"Circuit
DTC P2126-109 Throttle / Pedal Position Sensor / Switch "E"Circuit Range / Performance
DTC P2127-107 Throttle / Pedal Position Sensor / Switch "E"Circuit Low Input
DTC P2128-108 Throttle / Pedal Position Sensor / Switch "E"Circuit High Input
DTC P2138-110 Throttle / Pedal Position Sensor / Switch "D" /"E" Voltage Correlation
DTC P2138-154 Throttle / Pedal Position Sensor / Switch "D" /"E" Voltage Correlation

DESCRIPTION

DTC Detection Condition:

The accelerator pedal position sensor is mounted on the accelerator pedal to detect how much the pedal is depressed. This is a non-contact sensor with hall elements. It has 2 sensors per sensor unit. 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 VPA1 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 VPA1 and VPA2.

Wiring Diagram:

Step 1-3:

Step 3(Continued)-4:

Step 5:

INSPECTION PROCEDURE

CAUTION:
- Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with converter assembly, take safety precautions such as wearing insulated gloves and removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-voltage system.
- After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage connectors or terminals. After waiting, check the voltage at the inspection point in the inverter with converter assembly. The voltage should be 0 V before beginning work.

HINT: Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with converter assembly.