Lighting System Headlight (Hi-Beam) Circuit

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING INTELLIGENT TESTER (HEAD HI RELAY)

INSPECT HEADLIGHT RELAY (HEAD HI)

CHECK HARNESS AND CONNECTOR (BATTERY - HEADLIGHT RELAY [HEAD HI])

CHECK HARNESS AND CONNECTOR (HEADLIGHT RELAY [HEAD HI] - MAIN BODY ECU [COWL SIDE JUNCTION BLOCK LH])

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

Inspect the fuses and bulbs for circuits related to this system before performing the following inspection procedure.

1. Using the intelligent tester, perform the Active Test (Click here).
   
   

   Main Body

   Tester Display	Test Part	Control Range	Diagnostic Note
   Head Light Hi	Headlight (Hi)	ON or OFF	-

   OK:

   Headlight high beam turns on/turns off.
   

1. Remove the headlight relay from the engine room relay block, junction block.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   3 - 5	Battery voltage not applied to terminals 1 and 2	10 kΩ or higher
   	Battery voltage applied to terminals 1 and 2	Below 1 Ω

1. Remove the headlight relay from the engine room relay block, junction block.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   Headlight relay terminal 2 - Body ground	Always	11 to 14 V
   Headlight relay terminal 3 - Body ground

   Text in Illustration

   *a	Front view of wire harness connector (to Headlight Relay [HEAD HI])

1. Remove the headlight relay from the engine room relay block, junction block.
   

2. Disconnect the 2B main body ECU connector.
   

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

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   Headlight relay terminal 1 - 2B-16 (DIM)	Always	Below 1 Ω
   Headlight relay terminal 1 - Body ground	Always	10 kΩ or higher