LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2001 >> IS 300 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0121: Throttle Position (TP) Sensor Circuit Range/Performance Fault >> Circuit Description

Circuit Description

TP sensor is a 2 variable resistor sensor that monitors throttle opening and TP sensor malfunction. Based on TP sensor signal, ECM determines vehicle driving condition and adjusts air/fuel mixture accordingly. DTC is set when TP sensor VTA and VTA2 circuit voltage is out of range for 2 seconds. Possible causes are:

scientia non olet · About LEMON Manuals