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Home >> Lexus >> 2024 >> TX 350 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 116 (Heating / Air Conditioning System - Diagnostic Codes (2 Of 3)) >> AIR CONDITIONING SYSTEM (for PHEV Model) >> DTC B14C7-7F: Electric Water Pump Actuator Stuck Off [12/2023 - ] >> Description

DTC B14C7-7F: Electric Water Pump Actuator Stuck Off [12/2023 - ]: Description

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.

The air conditioning amplifier assembly receives the flow shutting valve status and controls the electric water pump (rear heater pump assembly) according to the coolant temperature sensor value.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Memory DTC Output from Priority Note
B14C7-7F Electric Water Pump Actuator Stuck Off Diagnosis condition:
  1. Electric water pump (rear heater pump assembly) operation request signal output

Malfunction status:
  1. Receives information that the electric water pump (rear heater pump assembly) has stopped abnormally

Detection time:
  1. Continuously for 10 seconds or more
  • Electric water pump (rear heater pump assembly)
  • Harness or connector
  • Air conditioning amplifier assembly
Does not come on Memorized Air Conditioner B -