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

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / HL AutoLeveling / Active Test.
5. 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

   OK

   Headlight leveling motors operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

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

Result: 

NG 

See step  2

1. Disconnect the A65 headlight leveling ECU assembly connector.
2. Disconnect the A33*1 or A1*2 headlight assembly connector.
   1. *1: for LH Side
   2. *2: for RH Side
3. 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: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  3

1. Remove the headlight cord.

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

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

2. 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: 

NG 

REPLACE HEADLIGHT CORD 

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

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

Result: 

OK 

See step  4

1. 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]

2. 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

   OK

   Headlight leveling motors operate normally.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (HEADLIGHT LEVELING MOTOR WAS DEFECTIVE) 

Result: 

NG 

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