REMOVAL PROCEDURE 1. REMOVE LOWER STEERING COLUMN COVER (for Manual Tilt)
2. REMOVE UPPER STEERING COLUMN COVER (for Manual Tilt)
3. REMOVE LOWER STEERING COLUMN COVER (for Manual Tilt and Manual Telescopic Steering Column)
4. REMOVE UPPER STEERING COLUMN COVER (for Manual Tilt and Manual Telescopic Steering Column)
5. REMOVE LOWER STEERING COLUMN COVER (for Power Tilt and Power Telescopic Steering Column)
6. REMOVE UPPER STEERING COLUMN COVER (for Power Tilt and Power Telescopic Steering Column)
7. REMOVE UNLOCK WARNING SWITCH ASSEMBLY 
(a) Disconnect the connector. (b) Insert the key. (c) Remove the unlock warning switch assembly by releasing the 2 claws. HINT: Slide the unlock warning switch assembly in the direction shown by the arrow in the illustration to remove it. Text in Illustration
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Toyota Tundra Service Manual > Sfi System: Oxygen (A/F) Sensor Signal Stuck Lean (Bank 1 Sensor 1) (P2195-P2198)
DESCRIPTION The A/F sensor generates a voltage* that corresponds to the actual air-fuel ratio. This sensor voltage is used to provide the ECM with feedback so that it can control the air-fuel ratio. The ECM determines the deviation from the stoichiometric air-fuel ratio, and regulates the fuel injec ...
