Lighting System (For Hatchback) Terminals Of Ecu

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

  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU

  1. CHECK COMBINATION METER ASSEMBLY

Lighting System (For Hatchback) -- Terminals Of Ecu



CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU

Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Terminals Of Ecu


Text in Illustration
*A
Main Body ECU 1 Connector Type
-
-
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU

Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Terminals Of Ecu


Text in Illustration
*A
Main Body ECU 2 Connector Type
-
-
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU

  1. Remove the main body ECU.

  2. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MB-11 (GND1) - Body ground
    		-
    		Ground
    		Always
    		Below 1 Ω
    MB-29 (ACC) - Body ground
    		-
    		Ignition power supply (ACC signal)
    		Ignition switch ACC
    		11 to 14 V
    MB-30 (BECU) - Body ground
    		-
    		Battery power supply
    		Always
    		11 to 14 V
    MB-32 (IG) - Body ground
    		-
    		Ignition power supply (IG signal)
    		Ignition switch ON
    		11 to 14 V
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reinstall the main body ECU.

  4. Measure the voltage and resistance according to the value(s) in the table below.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D143-5 (HU) - Body ground*1
    		P - Body ground
    		Dimmer switch high signal
    		Dimmer switch in high position
    		Below 1 V
    Dimmer switch in low position
    		Pulse generation
    D143-8 (HF) - Body ground*1
    		P - Body ground
    		Dimmer switch high flash signal
    		Dimmer switch in high flash position
    		Below 1 V
    Dimmer switch not in high flash position
    		Pulse generation
    D143-13 (CANL) - Body ground
    		W - Body ground
    		CAN communication
    		Ignition switch ON
    		Pulse generation
    D143-14 (CANH) - Body ground
    		R - Body ground
    		CAN communication
    		Ignition switch ON
    		Pulse generation
    D143-27 (FFOG) - Body ground*1*2
    		G - Body ground
    		Fog light switch signal
    		Fog light switch on
    		Below 1 V
    Fog light switch off
    		Pulse generation
    D143-29 (HEAD) - Body ground*1
    		L - Body ground
    		Light control switch head signal
    		Light control switch in head position
    		Below 1 V
    Light control switch not in head position
    		Pulse generation
    D143-30 (TAIL) - Body ground)*1
    		SB - Body ground
    		Light control switch tail signal
    		Light control switch in tail or head position
    		Below 1 V
    Light control switch in neither tail nor head position
    		Pulse generation
    3A-28 (PKB) - Body ground
    		R - Body ground
    		Parking brake switch input
    		Parking brake switch ON and ignition switch ON
    		Below 1 V
    Parking brake switch off and ignition switch ON
    		11 to 14 V
    3C-18 (HRLY) - Body ground*1
    		V - Body ground
    		Headlight relay drive output
    		Light control switch in head
    		Below 1 V
    Light control switch not in head
    		11 to 14 V
    3C-22 (DRL) - Body ground*3
    		G - Body ground
    		Daytime running light system drive output
    		Daytime running light system operates
    		Below 1 V
    Daytime running light system does not operate
    		11 to 14 V
    3C-35 (DIM) - Body ground*1
    		P - Body ground
    		Dimmer relay drive output
    		Dimmer switch in high or high flash position
    		Below 1 V
    Dimmer switch in low position
    		11 to 14 V
    1. *1: w/ Daytime Running Light System or w/ Theft Deterrent System
    2. *2: w/ Fog Light
    3. *3: w/ Daytime Running Light System
    HINT:
    If the result is not as specified, the main body ECU or instrument panel junction block assembly may have a malfunction.

CHECK COMBINATION METER ASSEMBLY

Yaris. Ncp93, 131.Lighting (Ext).Lighting System (For Sedan).Lighting System (For Hatchback) Terminals Of Ecu

  1. Disconnect the D101 combination meter assembly connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D101-1 (B) - Body ground
    		R - Body ground
    		Battery power supply
    		Always
    		11 to 14 V
    HINT:
    If the result is not as specified, there may be a malfunction on the wire harness.

  3. Reconnect the combination meter assembly connector.

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

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D101-3 (HAZ) - Body ground
    		L - Body ground
    		Hazard warning signal switch signal
    		Hazard warning signal switch off
    		11 to 14 V
    Hazard warning signal switch on
    		Below 1 V
    D101-7 (LR) - Body ground
    		V - Body ground
    		Turn signal light RH drive output
    		Turn signal light RH turned on
    		11 to 14 V
    Turn signal light RH turned off
    		Below 1 V
    D101-9 (ER) - Body ground
    		B - Body ground
    		Turn signal switch RH signal
    		Turn signal switch RH on
    		Below 1 V
    Turn signal switch RH off
    		11 to 14 V
    D101-10 (EL) - Body ground
    		Y - Body ground
    		Turn signal switch LH signal
    		Turn signal switch LH on
    		Below 1 V
    Turn signal switch LH off
    		11 to 14 V
    D101-13 (LL) - Body ground
    		LG - Body ground
    		Turn signal light LH drive output
    		Turn signal light LH turned on
    		11 to 14 V
    Turn signal light LH turned off
    		Below 1 V
    HINT:
    If the result is not as specified, the combination meter assembly may have a malfunction.