Lighting System (For Hatchback) Door Unlock Detection Switch Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM

INSPECT FRONT DOOR LOCK ASSEMBLY

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

INSPECT REAR DOOR LOCK ASSEMBLY

CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

LIGHTING SYSTEM (for Hatchback) - Door Unlock Detection Switch Circuit


DESCRIPTION

The main body ECU detects the condition of each door unlock detection switch.

WIRING DIAGRAM


Yaris. Ncp93, 131.Lighting (Int).Lighting System (For Sedan).Lighting System (For Hatchback) Door Unlock Detection 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
    FR Door Lock Pos*1
    		Front door unlock detection switch RH signal /
    LOCK or UNLOCK
    		LOCK: Front door RH locked
    UNLOCK: Front door RH unlocked
    		-
    FL Door Lock Pos*1
    		Front door unlock detection switch LH signal /
    LOCK or UNLOCK
    		LOCK: Front door LH locked
    UNLOCK: Front door LH unlocked
    		-
    RR-Door Lock Pos SW*2*3
    		Rear door unlock detection switch LH and RH signal /
    OFF or ON
    		OFF: Rear door LH and RH locked
    ON: Rear door LH or RH unlocked
    		-
    RL-Door Lock Pos SW*2*3
    		Rear door unlock detection switch LH and RH signal /
    OFF or ON
    		OFF: Rear door LH and RH locked
    ON: Rear door LH or RH unlocked
    		-
    1. *1: w/ Power Door Lock
    2. *2: w/ Theft Deterrent System
    3. *3: for 5 Door
    OK:
    Normal conditions listed above are displayed.
    Result
    Result
    		Proceed to
    OK
    		A
    NG (Front door unlock detection switch does not operate)*1
    		B
    NG (Rear door unlock detection switch does not operate)*2*3
    		C
    1. *1: w/ Power Door Lock
    2. *2: w/ Theft Deterrent System
    3. *3: for 5 Door


B
Go to step 2

C
Go to step 4
A

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

2.INSPECT FRONT DOOR LOCK ASSEMBLY

  1. Inspect the front door lock assembly (YARIS_NCP93 RM000001DPO01VX.html).



NG
REPLACE FRONT DOOR LOCK ASSEMBLY (YARIS_NCP93 RM000003N1Q00IX.html)
OK


3.CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY - MAIN BODY ECU AND BODY GROUND)

  1. Disconnect the G23 or F23 front door lock 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
    G23-8 (LSSR) - D143-7 (LSFL)
    		Always
    		Below 1 Ω
    G23-8 (LSSR) - Body ground
    		Always
    		10 kΩ or higher
    G23-7 (E) - Body ground
    		Always
    		Below 1 Ω
    RH
    Tester Connection
    		Condition
    		Specified Condition
    F23-7 (LSSR) - D143-18 (LSFR)
    		Always
    		Below 1 Ω
    F23-7 (LSSR) - Body ground
    		Always
    		10 kΩ or higher
    F23-8 (E) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)

4.INSPECT REAR DOOR LOCK ASSEMBLY

  1. Inspect the rear door lock assembly (YARIS_NCP93 RM000001P8302XX.html).



NG
REPLACE REAR DOOR LOCK ASSEMBLY (YARIS_NCP93 RM000002R1T00MX.html)
OK


5.CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

  1. Disconnect the H12 or R3 rear door lock assembly 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:
    LH
    Tester Connection
    		Condition
    		Specified Condition
    H12-6 (LSSR) - 3D-24
    		Always
    		Below 1 Ω
    H12-6 (LSSR) - Body ground
    		Always
    		10 kΩ or higher
    H12-9 (E) - Body ground
    		Always
    		Below 1 Ω
    RH
    Tester Connection
    		Condition
    		Specified Condition
    R3-6 (LSSR) - 3D-25
    		Always
    		Below 1 Ω
    R3-6 (LSSR) - Body ground
    		Always
    		10 kΩ or higher
    R3-9 (E) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


6.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 Unlock Detection Switch Circuit


    Text in Illustration
    *a
    		Component without harness connected
    (Instrument Panel Junction Block Assembly)
    		-
    		-

    Standard Resistance:
    LH
    Tester Connection
    		Condition
    		Specified Condition
    3D-24 - MB-5 (LSR)
    		Always
    		Below 1 Ω
    RH
    Tester Connection
    		Condition
    		Specified Condition
    3D-25 - MB-5 (LSR)
    		Always
    		Below 1 Ω


NG
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
OK

REPLACE MAIN BODY ECU (YARIS_NCP93 RM000003TOE00CX.html)