Lexus ES: Automatic Light Control Sensor
Components
COMPONENTS
ILLUSTRATION
| *1 | AUTOMATIC LIGHT CONTROL SENSOR | *2 | NO. 1 SPEAKER OPENING COVER ASSEMBLY |
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR
| (a) Disconnect the H3 automatic light control sensor connector. |
|
(b) Measure the voltage and resistance according to the value(s) in the table below.
Standard Voltage:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
|
*1: for HV Model
*2: for Gasoline Model | ||
| H3-1 (CLTB) - H3-2 (CLTE) | Power switch off*1 | Below 1 V |
| Engine switch off*2 | ||
| Power switch on (IG)*1 | 11 to 14 V | |
| Engine switch on (IG)*2 | ||
Standard Resistance:
| Tester Connection | Condition | Specified Condition |
|---|---|---|
| H3-2 (CLTE) - Body ground | Always | Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
(c) Connect the H3 automatic light control sensor connector.
(d) Connect an oscilloscope to terminals H3-2 (CLTE) and H3-4 (CLTS) of the automatic light control sensor connector and check the waveform.
| *a | Component with harness connected (Automatic Light Control Sensor) | *b | Waveform |
OK:
| Tester Connection | Condition | Tool Setting | Specified Condition |
|---|---|---|---|
|
*1: for HV Model
*2: for Gasoline Model | |||
| H3-2 (CLTE) - H3-4 (CLTS) | Power switch on (IG)*1 | 2 V/DIV., 10 ms./DIV. | Pulse generation (See waveform) |
| Engine switch on (IG)*2 | |||
HINT:
The communication waveform changes according to the surrounding brightness.
If the result is not as specified, the automatic light control sensor may be malfunctioning.
Removal
REMOVAL
PROCEDURE
1. REMOVE NO. 1 SPEAKER OPENING COVER ASSEMBLY
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2. REMOVE AUTOMATIC LIGHT CONTROL SENSOR
| (a) Disengage the 2 claws to remove the automatic light control sensor. |
|
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Components
COMPONENTS ILLUSTRATION *A w/o Headup Display *B w/ Headup Display *1 COWL SIDE TRIM BOARD LH *2 FRONT DOOR OPENING TRIM COVER LH *3 FRONT DOOR SCUFF PLATE LH *4 HAZARD W
Removal
REMOVAL PROCEDURE 1. REMOVE AIR CONDITIONING CONTROL ASSEMBLY Click here 2. REMOVE FRONT DOOR SCUFF PLATE LH Click here 3. REMOVE COWL SIDE TRIM BOARD LH Click here 4. REMOVE FRONT DOOR OPENING
SEE MORE:
Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT DOOR ILLUMINATION LIGHT LH (FRONT DOOR OUTSIDE HANDLE ASSEMBLY LH) *a Component without harness connected (Front Door Illumination Light LH (Front Door Outside Handle Assembly LH)) (a) Connect 4 dry-cell batteries (1.5 V) in series. NOTICE: Do not use r
Replacement
REPLACEMENT
CAUTION / NOTICE / HINT
NOTICE:
Perform fluid replacement with the shift lever in P and the parking
brake applied.
Perform fluid replacement while maintaining the brake fluid level between
the MAX and MIN lines on the brake fluid reservoir.
If the No. 1 brake a
