Toyota Tundra Service Manual: Diagnostic Trouble Code Chart

Diagnosis System

Dtc Check / Clear

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Toyota Tundra Service Manual > Sfi System: Throttle Actuator Control Motor Current Range / Performance (P2118)
DESCRIPTION The ETCS (Electronic Throttle Control System) has a dedicated power supply circuit. The voltage (+BM) is monitored and when it is low (less than 4 V), the ECM determines that there is a malfunction in the ETCS and cuts off the current to the throttle actuator. When the voltage becomes un ...