Lighting System (For Hatchback) Front Fog Light Circuit

Vehicle Exterior. Yaris. Ncp93, 131
Lighting (Ext). Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING TECHSTREAM

REPLACE MAIN BODY ECU

PERFORM ACTIVE TEST USING TECHSTREAM

LIGHTING SYSTEM (for Hatchback) - Front Fog Light Circuit


DESCRIPTION

The main body ECU controls the FR FOG relay.

WIRING DIAGRAM


Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Front Fog Light Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
1.PERFORM ACTIVE TEST USING TECHSTREAM

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Main Body / Active Test.

  1. According to the display on the Techstream, perform the Active Test.

    Main Body
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Front Fog Light Relay
    		Front Fog light relay
    		OFF or ON
    		Light Control switch is in TAIL or HEAD position
    OK:
    FOG FR relay operates. (Fog lights illuminate.)


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM000002CE208CX.html)

2.REPLACE MAIN BODY ECU

  1. Replace the main body ECU (YARIS_NCP93 RM000003TOE00CX.html).


NEXT


3.PERFORM ACTIVE TEST USING TECHSTREAM

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch to ON.

  1. Turn the Techstream on.

  1. Enter the following menus: Body Electrical / Main Body / Active Test.

  1. According to the display on the Techstream, perform the Active Test.

    Main Body
    Tester Display
    		Test Part
    		Control Range
    		Diagnostic Note
    Front Fog Light Relay
    		Front Fog light relay
    		OFF or ON
    		Light Control switch is in TAIL or HEAD position
    OK:
    FOG FR relay operates. (Fog lights illuminate.)


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

END (MAIN BODY ECU WAS DEFECTIVE)