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Home >> Lexus >> 2005 >> RX 330 AWD >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 537 (Engine Control System) >> SFI System >> DTC P0121 Throttle / Pedal Position Sensor / Switch "A" Circuit Range / Performance Problem >> Inspection Procedure
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Inspection Procedure

WARNING: This page is about a different car, the 2007 Lexus RX 350. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

  1. REPLACE THROTTLE BODY ASSEMBLY 
    1. Replace the throttle body assembly (See REMOVAL  ).

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