Lighting System: Initialization

WARNING: This page is about a different car, the 2006 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

HEIGHT CONTROL SENSOR SIGNAL INITIALIZATION
NOTE:
- Initialize the headlight beam level control ECU when vehicle height changes due to replacement of the suspension, headlight beam level control ECU, or removal, installation, or replacement of the height control sensor.
- Adjust the headlight aim after initializing the headlight beam level control ECU (See HEADLIGHT BEAM LEVEL WARNING CIRCUIT ).

CHECK VEHICLE CONDITION
1. Leave approximately 10 liters of fuel in the tank.
2. Unload the vehicle.
3. Check that there are no passengers in the vehicle.
4. Turn off the headlights.
  NEXT
CHECK WARNING INDICATOR
1. Turn the ignition switch on (IG) and check the warning indicator (bulb check function).
  
  Fig 1: Identifying Warning Indicator
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK:
  
  Warning indicator comes on for approximately 3 seconds.
  
  HINT:
  - If the headlight beam level control ECU is replaced with a new one or there is problem with initialized data memorized in the headlight beam level control ECU, the warning indicator repeats the following pattern: 2 Hz for one second, followed by a 1 second pause.
  - If the warning indicator does not come on or comes on for more than 3 seconds, inspect and repair according to PROBLEM SYMPTOMS TABLE .
    NEXT

INITIALIZATION

Connect terminals 4 (CG) and 8 (LVL) of the DLC3 using the SST.

Fig 2: Identifying Terminals Of DLC3
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SST 09843-18040
Flash the headlight 3 times within 20 seconds by turning the headlight dimmer switch.
NOTE: Flash the headlight at approximately 1 second intervals.

DLC3 REFERENCE CHART

Condition	Proceed to
Warning indicator blinks 3 times at 0.5 second intervals --> goes off	A
Warning indicator does not blink or continues blinking	B

HINT:

If initialization cannot finished normally, inspect the initialization circuit (See HEADLIGHT BEAM LEVEL CONTROL ACTUATOR CIRCUIT ).

B: INITIALIZED TERMINAL CIRCUIT IS FAULTY

A: Go to Next Step

END (NORMAL COMPLETE)