Lighting System (For Hatchback) Interior Light Circuit

Vehicle Interior. Yaris. Ncp93, 131
Lighting (Int). Yaris. Ncp93, 131

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST USING TECHSTREAM

INSPECT MAP LIGHT ASSEMBLY

CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY)

CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

LIGHTING SYSTEM (for Hatchback) - Interior Light Circuit


DESCRIPTION

The main body ECU controls the map light assembly.

WIRING DIAGRAM


Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Hatchback) Interior Light Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses and bulbs 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. Turn the map light assembly switch to the DOOR position.

  1. All doors closed (door courtesy light switches OFF).

  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
    Illuminated Entry System
    		Map light assembly
    		OFF or ON
    		Map light switch at DOOR position and all doors closed.
    OK:
    The illuminated entry system operates normally when operating it through the Techstream.


NG
Go to step 2
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM000002WKO01LX.html)

2.INSPECT MAP LIGHT ASSEMBLY

  1. Inspect the map light assembly (YARIS_NCP93 RM000001Y4Q00JX.html).



NG
REPLACE MAP LIGHT ASSEMBLY (YARIS_NCP93 RM000004O10003X.html)
OK


3.CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY)


    Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Hatchback) Interior Light Circuit

  1. Disconnect the 3C instrument panel junction block assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    3C-4 - Body ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Instrument Panel Junction Block Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (MAP LIGHT ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  1. Disconnect the K10 map light assembly connector.

  1. Disconnect the 3A and 3B instrument panel junction block assembly connectors.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    K10-3 (B) - 3A-5
    		Always
    		Below 1 Ω
    K10-2 (CTY) - 3B-6
    		Always
    		Below 1 Ω
    K10-3 (B) - Body ground
    		Always
    		10 kΩ or higher
    K10-2 (CTY) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

  1. Remove the instrument panel junction block assembly.

  1. Remove the main body ECU from the instrument panel junction block assembly.



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


    Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Hatchback) Interior Light Circuit


    Text in Illustration
    *a
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		-
    		-
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3C-4 - 3A-5
    		Always
    		Below 1 Ω
    3B-6 - MB-1 (ILE)
    		Always
    		Below 1 Ω


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)