Headlight Signal Circuit: Procedure

1. Disconnect the A44 headlight cleaner control relay connector.
   Fig 1: Identifying Harness And Connector (Integration Relay - Headlight Cleaner Control Relay)

   Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.
2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   A44-1 (HDLO) - Body ground	Light control switch in head position	Below 1 V
   	Light control switch off	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *1	Front view of wire harness connector (to Headlight Cleaner Control Relay)

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK → See step   2