OPERATION CHECK AUTOMATIC LIGHT CONTROL SYSTEM OPERATION CHECK NOTICE: Make sure that the customize settings are set to default when performing the automatic light control system operation check. Click here (a) Turn the power switch on (IG). (b) Turn the light control switch to the AUTO position. (c) Cover the automatic light control sensor. (d) Check that the taillights and low beam headlights come on. (e) Uncover the automatic light control sensor. (f) Check that the low beam headlights and taillights turn off. LIGHT AUTO TURN-OFF SYSTEM OPERATION CHECK NOTICE: Make sure that the customize settings are set to default when performing the light auto turn-off system operation check. Click here (a) When the taillights are on (low beam headlights are not on) (1) Close all of the doors. (2) Turn the power switch on (IG). (3) Turn the taillights on. (4) Turn the power switch off. (5) Open the driver door. (6) Check that all of the lights turn off immediately. (b) When the low beam headlights are on (1) Close all of the doors. (2) Turn the power switch on (IG). (3) Turn the low beam headlights on. (4) Turn the power switch off. (5) Open any of the doors. (6) Close the door. (7) Check that all of the lights turn off after 30 seconds (delay function). HINT: Before the lights turn off, if the lock button on the key is pushed after all of the doors are locked, all of the lights will turn off immediately. DAYTIME RUNNING LIGHT SYSTEM OPERATION CHECK NOTICE: Make sure that the customize settings are set to default when performing the daytime running light system operation check. Click here (a) Turn the power switch on (READY). (b) Turn the light control switch to the tail or AUTO position (with the low beam headlights not turned on via the automatic light control system). (c) Release the parking brake. (d) Check that the daytime running lights come on. NOTICE: Make sure that the customize settings are set to default when performing the wiper-linked low beam headlight control system operation check. Click here
WIPER-LINKED LOW BEAM HEADLIGHT CONTROL SYSTEM OPERATION CHECK (a) Turn the power switch on (IG). (b) Shine a light on the automatic light control sensor.* HINT: *: If troubleshooting is being performed in a bright area, such as outside on a sunny day, it will not be necessary to perform this step. (c) Turn the light control switch to the AUTO position. (d) Operate the front wipers for 10 seconds or more (except MIST or washer-linked wiper operation) and check that the low beam headlights*1 or high beam headlights*2 illuminate.
WELCOME LIGHT ILLUMINATION CONTROL OPERATION CHECK NOTICE:
(a) Turn the power switch off. (b) Turn the light control switch to the AUTO position. (c) Cover the automatic light control sensor. (d) Close and lock all of the doors. (e) Unlock all of the doors using the wireless door unlock or entry door unlock function. (f) Check that the taillights, parking lights, front side marker lights and license plate lights illuminate for 15 seconds. 
AUTOMATIC HIGH BEAM SYSTEM OPERATION CHECK (a) Check the operation of the automatic high beam indicator light. (1) Turn the power switch on (IG). (2) Turn the light control switch to the AUTO or head position. (3) Move the dimmer switch to the high position. (4) Press the auto high beam switch (indicator illuminates). HINT: If the auto high beam switch is turned on when the light control switch is not in the AUTO or head position, or the dimmer switch is not in the high position, "Auto High Beam Ready Turn ON High Beam to Activate" will be displayed on the multi-information display. (5) Check that the automatic high beam indicator illuminates. NOTICE: When the forward recognition camera cannot correctly detect objects due to inclement weather such as thick fog or other visual obstructions, the automatic high beam indicator may not turn on and consequently the automatic high beam system may not operate. (b) Check the operation of the automatic high beam function. (1) At night, when driving the vehicle with the automatic high beam system in standby mode, check that the high beams automatically turn on after a short delay when all of the following conditions are met:
(2) At night, when driving the vehicle with the high beams turned on by the automatic high beam system, check that the automatic high beam system turns off the high beams and returns to standby mode when any of the following conditions are met:
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Power Mirror Control System(for Gasoline Model With Memory): Lost Communication With Body Control Module "B" (U0142)
DESCRIPTION DTC No. Detection Item DTC Detection Condition Trouble Area U0142 Lost Communication with Main Body ECU No communication with main body ECU (multiplex network body ECU) CAN communication system Main body ECU (multiplex network body ECU) PROCEDURE 1. GO TO CAN COMMUNICATION SYSTEM HINT: R ...
