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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 106 (Engine Control System - Diagnostic Codes (7 Of 7) & Symptom Tests (1 Of 2)) >> SFI SYSTEM (for 1Motor-HEV Model) >> DTC P314A-31: Motor Electronics Coolant Pump "A" No Signal [09/2023 - ] >> Monitor Description

Monitor Description

WARNING: This page is about a different car, the 2024 Lexus TX 500h. However, it is still accessible from the selected car via links, so may be relevant.

The ECM monitors the speed of the inverter water pump assembly. If the inverter water pump speed signal is not sent to the ECM, the ECM will illuminate the MIL and store a DTC.

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