Lexus ES: Precaution
Lexus ES (XZ10) Service Manual / Engine & Hybrid System / A25a-fks (cooling) / Cooling Fan System / Precaution
PRECAUTION
INITIALIZATION
NOTICE:
Make sure to perform the necessary procedures (adjustment, calibration, initialization, or registration) after parts related to the cooling fan system have been removed/installed or replaced.
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Parts Location
PARTS LOCATION ILLUSTRATION *1 FAN WITH MOTOR ASSEMBLY - COOLING FAN MOTOR - COOLING FAN ECU *2 ECM *3 NO. 1 ENGINE ROOM RELAY BLOCK AND NO. 1 JUNCTION BLOCK ASSEMBLY - EFI-MAIN NO. 1
System Diagram
SYSTEM DIAGRAM
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE HINT:
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of
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Hybrid/EV Battery ECU Multiple Reset (P1AFF00)
DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction. DTC No. Detection Item DTC Detection Condition Trouble Area MIL Warning Indicate P1AFF00 Hybrid/EV Battery ECU Multiple Reset ECU internal malf
Cooling Fan Circuit
DESCRIPTION The ECM calculates an appropriate cooling fan speed based on the engine coolant temperature, air conditioning switch status, refrigerant pressure, engine speed and vehicle speed, and sends a signal to the cooling fan ECU (fan with motor assembly). The cooling fan ECU (fan with motor asse
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