Toyota Yaris: Headlight Leveling Switch / Inspection

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual / Vehicle Exterior / Lighting (ext) / Headlight Leveling Switch / Inspection

INSPECTION

PROCEDURE

1. INSPECT HEADLIGHT LEVELING SWITCH

(a) Check the voltage.

(1) Connect a positive (+) lead from the auxiliary battery to terminal 5 (B) and a negative (-) lead to terminal 2 (E).

*a	Component without harness connected (Headlight Leveling Switch)

(2) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection	Condition	Specified Condition
H49-4 (T) - H49-2 (E)	0	2.40 to 3.12 V
H49-4 (T) - H49-2 (E)	1	3.82 to 4.54 V
H49-4 (T) - H49-2 (E)	2	5.23 to 5.95 V
H49-4 (T) - H49-2 (E)	3	6.65 to 7.37 V
H49-4 (T) - H49-2 (E)	4	8.06 to 8.78 V
H49-4 (T) - H49-2 (E)	5	9.48 to 10.20 V

HINT:

Auxiliary battery voltage is 12 V.

If the result is not as specified, replace the headlight leveling switch.

(b) Check the illumination.

(1) Apply auxiliary battery voltage to the headlight leveling switch and check that the switch illuminates.

OK:

Measurement Condition

Specified Condition

H49-6 (ILL+) - Auxiliary battery positive (+)

H49-1 (ILL-) - Auxiliary battery negative (-)

Switch illumination illuminates

If the result is not as specified, replace the headlight leveling switch.

*a	Component without harness connected (Headlight Leveling Switch)

Removal

REMOVAL PROCEDURE 1. REMOVE CENTER LOWER INSTRUMENT COVER Click here 2. REMOVE LOWER INSTRUMENT PANEL FINISH PANEL Click here 3. REMOVE SWITCH HOLE BASE SUB-ASSEMBLY Click here 4...

Installation

INSTALLATION PROCEDURE 1. INSTALL HEADLIGHT LEVELING SWITCH (a) Engage the claws to install the headlight leveling switch. 2. INSTALL LOWER INSTRUMENT PANEL FINISH PANEL ASSEMBLY Click here 3...

Other information:

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Lost Communication with ECM/PCM "A" Missing Message (U010087,U012687,U012987)

DESCRIPTION The AWD ECU assembly receives signals from the ECM, steering sensor and skid control ECU (brake actuator assembly) via CAN communication. DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Memory U010087 Lost Communication with ECM/PCM "A" Missing Message When the ignition switch is ON, the IG1 terminal voltage is 10 V or more and the vehicle speed is 60 km/h (37 mph) or more, signals cannot be received from the ECM for 1 second or more CAN communication system AWD ECU assembly ECM Displayed Yes U012687 Lost Communication with Steering Angle Sensor Module Missing Message When the following continues: When the IG1 terminal voltage is 10 V or more, communication with the steering sensor is impossible for 1 second or more When the IG1 terminal voltage is 10 V or more, a condition in which communication with the steering sensor is impossible occurs 1 time or more within a 5-second period, and this occurs 10 times within 60 seconds CAN communication system AWD ECU assembly Steering sensor Displayed Yes U012987 Lost Communication with Brake System Control Module Missing Message When the IG1 terminal voltage is 10 V or more, communication with the skid control ECU (brake actuator assembly) is impossible for 3 seconds or more CAN communication system AWD ECU assembly Skid control ECU (Brake actuator assembly) Displayed Yes PROCEDURE 1...

Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Components

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