Inspection Procedure

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

CHECK INITIALIZE
1. Start engine.
2. Check that initial set control function of both headlamps operates.
  NG: Go to step 3
  
  OK: Go to Next Step
CHECK HEAD LIGHT UNIT
1. Check headlamp leveling motor resistance.
  1. Check that continuity exists between terminal 2 and 5.
    
    Fig 1: Checking Continuity Exists Between Terminals 2 & 5
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. Check that there is resistance between terminals as shown in Fig 2 .
  Fig 2: Checking Resistance Between Terminals Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  NG: REPLACE HEAD LIGHT UNIT
  
  OK: CHECK AND REPLACE HEADLIGHT UNIT
CHECK HARNESS AND CONNECTOR (BETWEEN HEADLAMP LEVELING ECU AND HEADLAMP LEVELING MOTOR)
1. Check the continuity of the vehicle side wire harness between headlamp leveling motor.
  Standard: There is continuity.
  
  NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
  
  OK: CHECK AND REPLACE HEADLAMP LEVELING ECU ASSY