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: | Tester Connection | Switch Condition | Specified Condition | | H78-1 (CLTB) - H78-2 (CLTE) | Ignition switch on (IG) | 11 to 14 V | If the specified condition is not met, replace the vehicle wire harness. |
| | *a | Front view of wire harness connector (Automatic Light Control Sensor) | | |
(b) Check the resistance.
| (1) Measure the resistance according to the value(s) in the table below. Standard Resistance: | Tester Connection | Switch Condition | Specified Condition | | H78-2 (CLTE) - Body ground | Always | Below 1 Ω | If the specified condition is not met, replace the vehicle wire harness. |
| | *a | Front view of wire harness connector (Automatic Light Control Sensor) | | |
(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.
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:
COMPONENTS ILLUSTRATION
*1 DIAPHRAGM OIL SEAL *2 ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY *3 ELECTRO MAGNETIC CONTROL COUPLING WIRE HARNESS *4 TRANSMISSION COUPLING CONICAL SPRING WASHER *5 TRANSMISSION COUPLING SPACER *6 REAR DIFFERENTIAL DRAIN PLUG *7 REAR DIFFERENTIAL FILLER PLUG *8 GASKET *9 REAR DIFFERENTIAL CARRIER ASSEMBLY - -
Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping" : N*m (kgf*cm, ft...
During rotation, inspect them for
correct balance.
Also, inspect them for uneven wear and damage. Abnormal wear is
usually caused by one or a combination of the following:
Incorrect tire pressure
Improper wheel alignment
Out-of-balance wheel
Severe braking
After rotation, inflate all tire pressures to specification and
inspect the lug nuts for tightness...
Categories
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.

To remove the fuel-filler cap, turn it counterclockwise.
Attach the removed cap to the
inner side of the fuel-filler lid.
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