Toyota Tundra Service Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT THROTTLE BODY ASSEMBLY

(a) Check the throttle valve.

(1) Check that the throttle valve opens and closes smoothly.

(2) Check that there is no sludge accumulating around the throttle body.

(b) Check the throttle control motor.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (M-) - 2 (M+)	20°C (68°F)	0.3 to 100 Ω

If the result is not as specified, replace the throttle body assembly.

Toyota Tundra Service Manual > Sfi System: Throttle / Pedal Position Sensor / Switch "D" Circuit Range / Performance (P2121)
DESCRIPTION HINT: Refer to DTC P2120 (See page ). DTC No. DTC Detection Condition Trouble Area P2121 Either conditions (1) or (2) met for 0.5 seconds (1 trip detection logic): (1) Difference between VPA and VPA2 is less than 0.4 V, or more than 1.2 V. (learned value of accelerator off position) (2) ...

Toyota Tundra Owners Manual