Headlight Beam Level Control Ecu Communication Circuit

Check headlight beam level control ECU. See HEADLIGHT BEAM LEVEL CONTROL ECU  under COMPONENT TESTS. If headlight beam level control ECU is okay, check wiring between headlight beam level control ECU and passenger-side junction block. See WIRING DIAGRAMS . Repair or replace as necessary. If circuits are okay, go to next test listed in BODY NO. 2 CONTROL SYSTEM  table under TROUBLE SHOOTING .