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Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2007 Lexus GS 430. However, it is still accessible from the selected car via links, so may be relevant.
TYPICAL MALFUNCTION THRESHOLDS CHART

Either of following conditions is met -
"Difference of TP sensor voltage between VTA1 and VTA2 x 0.8" Higher than 1.6 V
"Difference of TP sensor voltage between VTA1 and VTA2 x 0.8" Lower than 0.8 V