Lexus ES: System Description
SYSTEM DESCRIPTION
POWER MIRROR CONTROL SYSTEM (w/o Memory) DESCRIPTION
(a) This system has the following functions: electrical remote control mirror function, power retract mirror function, mirror heater function and automatic glare-resistant EC mirror function.
FUNCTION OF MAIN COMPONENT
| Component | Function | |
|---|---|---|
| Outer rear view mirror assembly | Vertical mirror motor | Receives signals from the outer mirror switch assembly and adjusts the mirror surface position vertically. |
| Horizontal mirror motor | Receives signals from the outer mirror switch assembly and adjusts the mirror surface position horizontally. | |
| Mirror heater | When the mirror heater switch (rear window defogger switch) on the air conditioning control assembly is operated, the air conditioning amplifier assembly detects the switch operation via LIN communication. The air conditioning amplifier assembly operates the semiconductor power integration ECU and mirror heaters in accordance with the switch operation. | |
| EC mirror cell | Varies the reflection rate of the mirror through function of EC elements. | |
| Outer mirror switch assembly | Mirror select switch | Consists of R and L switches. One must be chosen to operate the outer mirror switch assembly. |
| Mirror adjust switch | After selecting the R or L switch, the right, left, up and down control switches can be operated to change the angle of the mirror surface. | |
| Retractable outer mirror switch | Retracts and returns the outer rear view mirror assemblies. | |
SYSTEM OPERATION
(a) The power mirror control system (w/o Memory) has the following features:
| Function | Outline |
|---|---|
| Electrical remote control mirror function | When the outer mirror switch assembly is operated, this function moves the mirror surface vertically or horizontally to enable the driver to attain an optimal mirror angle. Turning the mirror select switch to the R position operates the right side mirror, and turning the mirror select switch to the L position operates the left side mirror. |
| Mirror heater function | Turns on the mirror heaters when the rear window defogger is turned on. The rear window defogger and mirror heaters automatically turn off 15 minutes after the rear window defogger and mirror heaters were activated. The rear window defogger and mirror heaters continue to operate up to an additional 45 minutes if the following conditions are met.
|
| Automatic glare-resistant EC mirror function | Reduces glare/reflection in the mirror during nighttime driving for safer driving conditions. |
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power mirror control system (w/o Memory).
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
Operation Check
OPERATION CHECK CHECK ELECTRICAL REMOTE CONTROL MIRROR FUNCTION (a) Turn the engine switch on (IG). (b) With L on the mirror select switch selected, check that the outer rear view mirror assembly LH s
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE NOTICE: If the battery voltage is low, the mirror heater function may not operate. HINT:
Use the table below to help determine the cause of problem symptoms. If multiple susp
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Components
COMPONENTS ILLUSTRATION *1 COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY *2 FRONT WIPER ARM AND BLADE ASSEMBLY LH *3 FRONT WIPER ARM AND BLADE ASSEMBLY RH *4 FRONT WIPER ARM HEAD CAP *5 NO. 2 COWL TOP PANEL INSULATOR *6 NO. 3 COWL TOP PANEL INSULATOR N*m (kgf*cm, ft.*l
Inspection
INSPECTION PROCEDURE 1. INSPECT OUTER MIRROR RH (a) Check the outer mirror heater operation. (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 25°C (77°F) 3.8 to 5.8 Ω If the re
