Lighting System (For Hatchback) Door Courtesy Switch Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU)

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY - MAIN BODY ECU)

INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)

CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU AND BODY GROUND)

LIGHTING SYSTEM (for Hatchback) - Door Courtesy Switch Circuit


DESCRIPTION

The main body ECU detects the condition of each door courtesy light switch.

WIRING DIAGRAM


Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Hatchback) Door Courtesy Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE 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 / Data List.

  1. According to the display on the Techstream, read the Data List.

    Main Body
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    RR Door Courtesy SW*1
    		Rear door courtesy light switch LH and RH signal /
    OFF or ON
    		OFF: Rear door LH and RH closed
    ON: Rear door LH or RH opened
    		-
    RL Door Courtesy SW*1
    		Rear door courtesy light switch LH and RH signal /
    OFF or ON
    		OFF: Rear door LH and RH closed
    ON: Rear door LH or RH opened
    		-
    Back Door Courtesy SW
    		Back door courtesy light switch signal /
    OFF or ON
    		OFF: Back door closed
    ON: Back door opened
    		-
    FR Door Courtesy
    		Front door courtesy light switch RH signal /
    ON or OFF
    		ON: Front door RH closed
    OFF: Front door RH opened
    		-
    FL Door Courtesy
    		Front door courtesy light switch LH signal /
    ON or OFF
    		ON: Front door LH closed
    OFF: Front door LH opened
    		-
    1. *1: for 5 Door
    OK:
    Normal conditions listed above are displayed.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (Front door courtesy light switch assembly LH does not operate)
    		B
    NG (Front door courtesy light switch assembly RH does not operate)
    		C
    NG (Rear door courtesy light switch assembly does not operate)*1
    		D
    NG (Back door courtesy switch)
    		E
    1. *1: for 5 Door


B
Go to step 2

C
Go to step 5

D
Go to step 7

E
Go to step 9
A

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

2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH

  1. Inspect the front door courtesy light switch assembly LH (YARIS_NCP93 RM000001Y5501GX.html).



NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH (YARIS_NCP93 RM000004O1A007X.html)
OK


3.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  1. Disconnect the J60 front door courtesy light switch assembly LH connector.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J60-1 - 3D-36
    		Always
    		Below 1 Ω
    J60-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.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) Door Courtesy Switch Circuit


    Text in Illustration
    *a
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		-
    		-
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3D-36 - MB-2 (FLCY)
    		Always
    		Below 1 Ω


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)

5.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH

  1. Inspect the front door courtesy light switch assembly RH (YARIS_NCP93 RM000001Y5501GX.html).



NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH (YARIS_NCP93 RM000004O1A007X.html)
OK


6.CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU)

  1. Disconnect J61 front door courtesy light switch assembly RH connector.

  1. Disconnect the D143 main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J61-1 - D143-19 (FRCY)
    		Always
    		Below 1 Ω
    J61-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)

7.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY

  1. Inspect the rear door courtesy light switch assembly (YARIS_NCP93 RM000001Y5601AX.html).



NG
REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (YARIS_NCP93 RM000004O1D006X.html)
OK


8.CHECK HARNESS AND CONNECTOR (REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY - MAIN BODY ECU)

  1. Disconnect J62 or J63 rear door courtesy light switch assembly connector.

  1. Disconnect the D143 main body ECU connector.

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

    Standard Resistance:
    LH
    Tester Connection
    		Condition
    		Specified Condition
    J62-1 - D143-6 (LRCY)
    		Always
    		Below 1 Ω
    J62-1 - Body ground
    		Always
    		10 kΩ or higher
    RH
    Tester Connection
    		Condition
    		Specified Condition
    J63-1 - D143-6 (LRCY)
    		Always
    		Below 1 Ω
    J63-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)

9.INSPECT BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH)

  1. Inspect the back door lock assembly (back door courtesy switch) (YARIS_NCP93 RM0000025EO00VX.html).

    Result
    Result
    		Proceed to
    NG
    		A
    OK (w/ Daytime Running Light System or w/ Theft Deterrent System)
    		B
    OK (w/o Daytime Running Light System and w/o Theft Deterrent System)
    		C


B
Go to step 10

C
Go to step 12
A

REPLACE BACK DOOR LOCK ASSEMBLY (BACK DOOR COURTESY SWITCH) (YARIS_NCP93 RM000004O1G005X.html)

10.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

  1. w/ Power Door Lock

    1. Disconnect the T5 back door lock assembly (back door courtesy switch) connector.

  1. w/o Power Door Lock

    1. Disconnect the T8 back door lock assembly (back door courtesy switch) connector.

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

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

    Standard Resistance:
    w/ Power Door Lock
    Tester Connection
    		Condition
    		Specified Condition
    T5-3 (D+) - 3D-35
    		Always
    		Below 1 Ω
    T5-3 (D+) - Body ground
    		Always
    		10 kΩ or higher
    T5-2 (ACT-) - Body ground
    		Always
    		Below 1 Ω
    w/o Power Door Lock
    Tester Connection
    		Condition
    		Specified Condition
    T8-4 (D+) - 3D-35
    		Always
    		Below 1 Ω
    T8-4 (D+) - Body ground
    		Always
    		10 kΩ or higher
    T8-5 (ACT-) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


11.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) Door Courtesy Switch Circuit


    Text in Illustration
    *a
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		-
    		-
    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    3D-35 - MB-20 (BCTY)
    		Always
    		Below 1 Ω


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)

12.CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK ASSEMBLY - MAIN BODY ECU AND BODY GROUND)

  1. w/ Power Door Lock

    1. Disconnect the T5 back door lock assembly (back door courtesy switch) connector.

  1. w/o Power Door Lock

    1. Disconnect the T8 back door lock assembly (back door courtesy switch) connector.

  1. Disconnect the D143 main body ECU connector.

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

    Standard Resistance:
    w/ Power Door Lock
    Tester Connection
    		Condition
    		Specified Condition
    T5-3 (D+) - D143-1 (BCTY)
    		Always
    		Below 1 Ω
    T5-3 (D+) - Body ground
    		Always
    		10 kΩ or higher
    T5-2 (ACT-) - Body ground
    		Always
    		Below 1 Ω
    w/o Power Door Lock
    Tester Connection
    		Condition
    		Specified Condition
    T8-4 (D+) - D143-1 (BCTY)
    		Always
    		Below 1 Ω
    T8-4 (D+) - Body ground
    		Always
    		10 kΩ or higher
    T8-5 (ACT-) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)