Lighting System (For Hatchback) Hazard Warning Switch Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)

CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) - COMBINATION METER ASSEMBLY)

REPLACE TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH)

READ VALUE USING TECHSTREAM

LIGHTING SYSTEM (for Hatchback) - Hazard Warning Switch Circuit


DESCRIPTION

The combination meter assembly receives information signals from the telltale light assembly (hazard warning signal switch).

WIRING DIAGRAM


Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Hazard Warning Switch Circuit


INSPECTION PROCEDURE

NOTICE:
Inspect the fuses for circuits related to this system before performing the following 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 / Combination Meter / Data List.

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

    Combination Meter
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Hazard Flasher Switch
    		Hazard warning signal switch /
    OFF or ON
    		OFF: Hazard warning signal switch off
    ON: Hazard warning signal switch on
    		-
    OK:
    Normal conditions listed above are displayed.


NG
Go to step 2
OK

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

2.CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)
Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Hazard Warning Switch Circuit

  1. Disconnect the D101 combination meter assembly connector.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    D101-1 (B) - Body Ground
    		Always
    		11 to 14 V
    Text in Illustration
    *a
    		Front view of wire harness connector
    (to Combination Meter Assembly)


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) - COMBINATION METER ASSEMBLY)

  1. Disconnect the D115 telltale light assembly (hazard warning signal switch) connector.

  1. Disconnect the D101 combination meter assembly connector.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    D115-4 (TB) - D101-3 (HAZ)
    		Always
    		Below 1 Ω
    D115-5 (E) - Body Ground
    		Always
    		Below 1 Ω
    D115-4 (TB) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.REPLACE TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH)

  1. Replace the telltale light assembly (hazard warning signal switch) (YARIS_NCP93 RM000004O2B00BX.html).


NEXT


5.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 / Combination Meter / Data List.

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

    Combination Meter
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Hazard Flasher Switch
    		Hazard warning signal switch /
    OFF or ON
    		OFF: Hazard warning signal switch off
    ON: Hazard warning signal switch on
    		-
    OK:
    Normal conditions listed above are displayed.


NG
REPLACE COMBINATION METER ASSEMBLY (YARIS_NCP93 RM0000035EJ00BX.html)
OK

END (TELLTALE LIGHT ASSEMBLY (HAZARD WARNING SIGNAL SWITCH) WAS DEFECTIVE)