Lighting System (For Sedan) 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

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

INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY

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

INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY (LUGGAGE COMPARTMENT DOOR COURTESY SWITCH)

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

LIGHTING SYSTEM (for Sedan) - 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 Sedan) 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
    D Door Courtesy SW
    		Driver side door courtesy light switch signal/ ON or OFF
    		ON: Driver side door is open
    OFF: Driver side door is closed
    		-
    P Door Courtesy SW
    		Passenger side door courtesy light switch signal/ ON or OFF
    		ON: Passenger side door is open
    OFF: Passenger side door is closed
    		-
    RR Door Courtesy SW
    		Rear door LH and RH courtesy light switch signal/ ON or OFF
    		ON: Rear door LH or RH is open
    OFF: Rear door LH and RH is closed
    		-
    RL Door Courtesy SW
    		Rear door LH and RH courtesy light switch signal/ ON or OFF
    		ON: Rear door LH or RH is open
    OFF: Rear door LH and RH is closed
    		-
    Luggage Door Courtesy SW
    		Luggage compartment courtesy switch signal/ ON or OFF
    		ON: Luggage door is open
    OFF: Luggage door is closed
    		-
    OK:
    Normal conditions listed above are displayed.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (Front door courtesy light switch assembly does not operate)
    		B
    NG (Rear door courtesy light switch assembly does not operate)
    		C
    NG (Luggage compartment door courtesy switch)
    		D


B
Go to step 2

C
Go to step 4

D
Go to step 6
A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (YARIS_NCP93 RM000001D9C00XX.html)

2.INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY

  1. Inspect the front door courtesy light switch assembly (YARIS_NCP93 RM000001DKV020X.html).



NG
REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (YARIS_NCP93 RM000001DKX01FX.html)
OK


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

  1. Disconnect J2 or J1 front door courtesy light switch assembly connector.

  1. Disconnect the 4A 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
    J2-1 - 4A-21
    		Always
    		Below 1 Ω
    J2-1 - Body ground
    		Always
    		10 kΩ or higher
    RH
    Tester Connection
    		Condition
    		Specified Condition
    J1-1 - 4A-24
    		Always
    		Below 1 Ω
    J1-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU

4.INSPECT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY

  1. Inspect the rear door courtesy light switch assembly (YARIS_NCP93 RM000001DKZ01AX.html).



NG
REPLACE REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (YARIS_NCP93 RM000001DL1018X.html)
OK


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

  1. Disconnect J33 or J32 rear door courtesy light switch assembly connector.

  1. Disconnect the 4A 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
    J33-1 - 4A-5
    		Always
    		Below 1 Ω
    J33-1 - Body ground
    		Always
    		10 kΩ or higher
    RH
    Tester Connection
    		Condition
    		Specified Condition
    J32-1 - 4A-20
    		Always
    		Below 1 Ω
    J32-1 - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU

6.INSPECT LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY (LUGGAGE COMPARTMENT DOOR COURTESY SWITCH)

  1. Inspect the luggage compartment door lock assembly (luggage compartment door courtesy switch) (YARIS_NCP93 RM000001DL301PX.html).



NG
REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY (LUGGAGE COMPARTMENT DOOR COURTESY SWITCH) (YARIS_NCP93 RM000001DL501HX.html)
OK


7.CHECK HARNESS AND CONNECTOR (LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY - MAIN BODY ECU AND BODY GROUND)

  1. Disconnect the J42 luggage compartment door lock assembly (luggage compartment door courtesy switch) connector.

  1. Disconnect the 4A main body ECU connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    J42-3 - 4A-7
    		Always
    		Below 1 Ω
    J42-3 - Body ground
    		Always
    		10 kΩ or higher
    J42-2 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU