Lexus ES: System Description
SYSTEM DESCRIPTION
POWER MIRROR CONTROL SYSTEM (w/ Memory) DESCRIPTION
(a) This system has the following functions: electrical remote control mirror function, memory and reactivation function, power retract mirror function, auto 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 a signal from the outer mirror control ECU assembly and adjusts the mirror surface position vertically. |
| Horizontal mirror motor | Receives a signal from the outer mirror control ECU assembly and adjusts the mirror surface position horizontally. | |
| Power retract mirror motor | Receives a signal from the outer mirror control ECU assembly, and retracts and returns the outer rear view mirror assemblies. | |
| Mirror position sensor | Detects the mirror surface position. This information is sent to the outer mirror control ECU assembly. | |
| Mirror heater | Receives a signal from the outer mirror control ECU assembly and operates the mirror heaters. | |
| EC mirror cell | Varies the reflection rate of the mirror through the function of EC elements. | |
| Outer mirror switch assembly | Mirror select switch | Consists of individual R and L switches. One must be selected to operate the mirror adjust switch. |
| Mirror adjust switch | Mirror R and L signals are sent to each outer mirror control ECU assembly from the mirror select switch. After turning the mirror select switch R or L switch, on the right, left, up and down control switches can be operated to change the angle of the mirror surface. | |
| Retractable outer mirror switch |
| |
| Seat memory switch | When the seat memory M1, M2 or M3 switch is pressed while the SET switch is being pressed, or the M1, M2 or M3 switch is pressed within 3 seconds of the SET switch being pressed, a signal is sent to the outer mirror control ECU assembly (driver door), which records the mirror surface position. When the seat memory switch is pressed, a signal is sent to the outer mirror control ECU assembly (driver door) and sent to the main body ECU (multiplex network body ECU), which changes the mirror surface position to the memorized position. | |
| Outer mirror control ECU assembly | Operates each mirror motor based on signals from the mirror select switch, mirror adjust switch and retractable outer mirror switch. Based on information from the mirror position sensors, 3 different mirror surface positions can be memorized. By operating a seat memory switch, the mirror surface moves to the memorized position. | |
SYSTEM OPERATION
(a) The power mirror control system (w/ 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. Pressing the mirror select switch R switch operates the right side mirror, and pressing the mirror select switch L switch operates the left side mirror. |
| Memory and reactivation function | Stores the adjusted mirror surface position in the outer mirror control ECU assembly. |
| Power retract mirror function | Retracts and returns the outer rear view mirror assemblies when the retractable outer mirror switch is pressed. |
| Auto power retract mirror function | Retracts and returns each outer rear view mirror assembly together with the following operations while the retractable outer mirror switch is in auto position.
|
| Reverse shift-linked function | Directs the mirror surface downward to improve visibility when driving in reverse and all of the following conditions are met:
|
| Reverse shift-linked mirror position memorization function | Memorizes the mirror surface position when the outer mirror switch is operated while the reverse shift-linked function is operating (can be enabled or disabled using the customize function). |
| 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. Glare/reflection from vehicle headlights behind could blind the driver and cause dangerous driving conditions. |
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System Diagram
SYSTEM DIAGRAM Communication Table Sender Receiver Signal Line Main Body ECU (Multiplex Network Body ECU) Outer Mirror Control ECU Assembly
IG signal
ACC signal
Outer mirror
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Use the following procedure to troubleshoot the power mirror control system (w/ Memory).
*: Use the Techstream.
PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP
Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE POWER MIRROR CONTROL SYSTEM (w/ Memory) NOTICE:
When the customer requests a change in a function, first make sure that the function can be customized.
Record the c
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Removal
REMOVAL CAUTION / NOTICE / HINT The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during starter assembly removal/installation are shown below. Necessary Procedures After Parts Removed/Installe
Inspection
INSPECTION PROCEDURE 1. INSPECT AIR FUEL RATIO SENSOR (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 (HA1B) - 2 (+B) 20°C (68°F) 2 to 6 Ω 1 (HA1B) - 4 (A1B-) Always 10 kΩ o
