Headlight Beam Level Control Actuator Circuit [04/2013 - 10/2016]: Procedure

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PERFORM ACTIVE TEST USING TECHSTREAM

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.

Check that the leveling motors operate.

Body Electrical > HL AutoLeveling > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Drive The Leveling Motor	Leveling motor upward or downward operation	Stop/Down/Up	Perform the Active Test with the engine started and vehicle stopped.

Body Electrical > HL AutoLeveling > Active Test

Tester Display
Drive The Leveling Motor

Headlight leveling motors operate normally.

Result

Proceed to
OK
NG

Result:

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to PROBLEM SYMPTOMS TABLE [04/2013 - 10/2016]

Result:

See step 2

CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY - HEADLIGHT LEVELING ECU ASSEMBLY)

Disconnect the A65 headlight leveling ECU assembly connector.
Disconnect the A33*1 or A1*2 headlight assembly connector.
1. *1: for LH Side
2. *2: for RH Side

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

Standard Resistance

FOR LH SIDE

Tester Connection	Condition	Specified Condition
A65-11 (LH+) - A33-4 (LHIG)	Always	Below 1 Ω
A65-18 (LHT) - A33-1 (LH T)	Always	Below 1 Ω
A65-24 (LH-) - A33-2 (LH E)	Always	Below 1 Ω
A65-11 (LH+) - Body ground	Always	10 kΩ or higher
A65-18 (LHT) - Body ground	Always	10 kΩ or higher
A65-24 (LH-) - Body ground	Always	10 kΩ or higher

FOR RH SIDE

Tester Connection	Condition	Specified Condition
A65-10 (RH+) - A1-4 (RHIG)	Always	Below 1 Ω
A65-17 (RHT) - A1-1 (RH T)	Always	Below 1 Ω
A65-23 (RH-) - A1-2 (RH E)	Always	Below 1 Ω
A65-10 (RH+) - Body ground	Always	10 kΩ or higher
A65-17 (RHT) - Body ground	Always	10 kΩ or higher
A65-23 (RH-) - Body ground	Always	10 kΩ or higher

Result

Proceed to
OK
NG

Result:

REPAIR OR REPLACE HARNESS OR CONNECTOR

Result:

See step 3

CHECK HEADLIGHT CORD

Remove the headlight cord.
for HID Headlight: Refer to REMOVAL [04/2013 - 10/2016]

for LED Headlight: Refer to REMOVAL [04/2013 - 10/2016]

Inspect the headlight cord.

for HID Headlight: Refer to INSPECTION [04/2013 - 10/2016]

for LED Headlight: Refer to INSPECTION [04/2013 - 10/2016]

Result

Proceed to
OK
NG

Result:

REPLACE HEADLIGHT CORD

for HID Headlight: Refer to REMOVAL [04/2013 - 10/2016]

for LED Headlight: Refer to REMOVAL [04/2013 - 10/2016]

Result:

See step 4

CHECK HEADLIGHT LEVELING MOTOR

Replace the headlight leveling motor with a new or known good one.
for HID Headlight: Refer to REMOVAL [04/2013 - 10/2016]

for LED Headlight: Refer to REMOVAL [04/2013 - 10/2016]

Perform the Active Test of the leveling motors.

Body Electrical > HL AutoLeveling > Active Test

Tester Display	Measurement Item	Control Range	Diagnostic Note
Drive The Leveling Motor	Leveling motor upward or downward operation	Stop/Down/Up	Perform the Active Test with the engine started and vehicle stopped.

Body Electrical > HL AutoLeveling > Active Test

Tester Display
Drive The Leveling Motor

Headlight leveling motors operate normally.

Result

Proceed to
OK
NG

Result:

END (HEADLIGHT LEVELING MOTOR WAS DEFECTIVE)

Result:

REPLACE HEADLIGHT LEVELING ECU ASSEMBLY. Refer to REMOVAL [04/2013 - 10/2016]