Toyota Yaris: Automatic Light Control Sensor / On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT AUTOMATIC LIGHT CONTROL SENSOR
(a) Check the wire harness.
(1) Disconnect the automatic light control sensor.
| (2) Measure the voltage according to the value(s) in the table below. Standard Voltage:
If the specified condition is not met, replace the vehicle wire harness. |
|
(b) Check the resistance.
| (1) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the specified condition is not met, replace the vehicle wire harness. |
|
(c) Check the automatic light control sensor.
(1) Connect the automatic light control sensor.
(2) Check the waveform. Use the oscilloscope and check the waveform in the terminal spaces.
NOTICE:
With the connector connected as is, check from the rear side of the connector.
| *a | Component with harness connected (Automatic Light Control Sensor) | *b | Waveform |
OK:
| Tester Connection | Condition | Tool Setting | Specified Condition |
|---|---|---|---|
| H78-4 (CLTS) - H78-2 (CLTE) | Ignition switch on (IG) | 2 V/DIV.,10 ms/DIV. | Pulse generation (See waveform) |
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.
Components
C..
Removal
REMOVAL PROCEDURE 1. DISCONNECT NO. 1 ROOF HEADLINING MOULDING LH Click here
2. DISCONNECT NO. 1 ROOF HEADLINING MOULDING RH HINT: Use the same procedure as for the LH side...
Other information:
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Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Precaution
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Refueling
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.
