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Home >> Lexus >> 2007 >> RX 400h FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Engine Control System (3MZ-FE)) >> SFI System >> DTC P2118 Throttle Actuator Control Motor Current Range / Performance >> Monitor Description
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Monitor Description

WARNING: This page is about a different car, the 2006 Lexus RX 400h. However, it is still accessible from the selected car via links, so may be relevant.

The ECM (Included in HV Control ECU) monitors the battery supply voltage applied to the throttle actuator.

When the power supply voltage (+BM) drops below 4 V for 0.8 seconds or more, the ECM interprets this as an open in the power supply circuit (+BM). The ECM illuminates the MIL and sets the DTC. If the malfunction is not repaired successfully, the DTC is set 5 seconds after the engine is next started.

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