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Home >> Lexus >> 2008 >> IS F >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Control System - SFI System Diagnostics (4 Of 4) >> DTC P2102 Throttle Actuator Control Motor Circuit Low; DTC P2103 Throttle Actuator Control Motor Circuit High >> System Description

System Description

The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears

The opening angle of the throttle valve is detected by the throttle position sensor, which is mounted on the throttle body The throttle position sensor provides feedback to the ECM. This feedback allows the ECM to appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to driver inputs.

HINT

This electronic throttle control system does not use a throttle cable

DTC DETECTION CONDITION CHART

DTC No. DTC Detection Condition Trouble Area
P2102 Conditions (a) and (b) continue for 2 0 seconds (1 trip detection logic)
  1. Throttle actuator duty ratio 80% or more
  2. Throttle actuator current less than 0 5 A
  • Open in throttle actuator circuit
  • Throttle actuator
  • ECM
P2103 Either of the following conditions is met (1 trip detection logic)
  • Hybrid IC diagnosis signal fail
  • Hybrid IC current limiter port fail
  • Short in throttle actuator circuit
  • Throttle actuator
  • Throttle valve
  • Throttle body
  • ECM
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