LIGHTING (EXT)  AUTOMATIC HEADLIGHT BEAM LEVEL CONTROL SYSTEM  Diagnosis Circuit  


DESCRIPTION

The headlight leveling ECU assembly outputs DTC information to the GTS via this circuit.

WIRING DIAGRAM

E143270E32
2.281,0.969 2.396,1.135 0.115,0.167 10 false 7 1.958,1.073 2.229,1.24 0.271,0.167 10 false SIL 1.49,1.833 1.771,2.01 0.281,0.177 10 false E13 1.49,2 1.885,2.167 0.396,0.167 10 false DLC3 4.729,1.813 5.271,2.01 0.542,0.198 10 false A60 4.729,1.969 6.177,2.354 1.448,0.385 10 false Headlight Leveling ECU Assembly 4.979,1.073 5.385,1.24 0.406,0.167 10 false PRST 4.719,0.969 4.917,1.135 0.198,0.167 10 false 15

PROCEDURE

1.CHECK HARNESS AND CONNECTOR (DLC3 - HEADLIGHT LEVELING ECU ASSEMBLY)
a.

Disconnect the A60 headlight leveling ECU assembly connector.


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
E13-7 (SIL) - A60-15 (PRST) Always Below 1 Ω
E13-7 (SIL) or A60-15 (PRST) - Body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR