DTC 31

DTC 31 Right Front Speed Sensor Circuit

Code 31: Throttle Position Sensor Circuit DTC Chart:

Throttle Position Sensor Circuit Wiring Diagram:

Throttle Position Sensor Circuit Inspection Procedure (Part 1 Of 3):

Throttle Position Sensor Circuit Inspection Procedure (Part 2 Of 3):

Throttle Position Sensor Circuit Inspection Procedure (Part 3 Of 3):

CIRCUIT DESCRIPTION
This circuit is not directly related to the Traction control (TRAC), but as it has an influence on TRAC control when trouble occurs in this circuit, it is used to switch off the TRAC system as a fail safe function.

NOTE:
^ The main Throttle Position Sensor signal is transmitted to the throttle control ECU from ECM, so if an error occurs at the engine side, the throttle control ECU also detects it.
If DTC No. P0120 or P0121 is being output for the engine, troubleshoot the engine first.