Lexus ES: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
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Before performing troubleshooting, change the grille shutter control mode to maintenance mode.
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If the swing grille actuator assembly has been replaced with a new one, perform initialization and change the grille shutter control mode.
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HINT:
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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 probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Symptom | Suspected Area | Link |
Grille shutter does not operate | Proceed to "Grille Shutter does not Operate" | |
Abnormal noise occurs during grille shutter operation | Check for ice, etc. around the shutters and links | - |
Swing grille actuator assembly | |
Radiator shutter sub-assembly | |
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TERMINALS OF ECU CHECK SWING GRILLE ACTUATOR ASSEMBLY (a) Disconnect the z23 swing grille actuator assembly connector. (b) Measure the voltage and resistance according to the value(s) in the table be
DIAGNOSIS SYSTEM DESCRIPTION (a) Grille shutter system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunc
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / (desired system) / T
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CUSTOMIZE PARAMETERS
PROCEDURE
1. CUSTOMIZE LANE CONTROL SYSTEM (for HV Model)
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2. CUSTOMIZE LANE CONTROL SYSTEM (for Gasoline Model)
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3. CUSTOMIZE ROAD SIGN ASSIST SYSTEM (for HV Model)
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4. CUSTOMIZE ROAD SIGN ASSIST SYSTEM (for Gasoline Model)
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DESCRIPTION The cause of this malfunction may be the generator high-voltage circuit. Check the generator internal resistance and the connection condition of the high-voltage line between the inverter and generator to check whether there is an open or short circuit. Related Parts Check Area Insp
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