Meter / Gauge System (For Hatchback) Terminals Of Ecu

Vehicle Interior. Yaris. Ncp93, 131
Meter Gauge Display. Yaris. Ncp93, 131

  1. CHECK COMBINATION METER ASSEMBLY

  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (2 Connector Type)

  1. CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (1 Connector Type)

  1. COMBINATION METER INTERNAL CIRCUIT

Meter / Gauge System (For Hatchback) -- Terminals Of Ecu



CHECK COMBINATION METER ASSEMBLY

Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu

  1. Disconnect the D100 combination meter assembly connector.

  2. Measure the voltage and resistance of the wire harness side connector.

    Terminals No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D100-21 (ET) - Body ground
    		W-B - Body ground
    		Ground
    		Always
    		Below 1 Ω
    D100-39 (IG+) - Body ground
    		P - Body ground
    		Ignition switch signal
    		Ignition switch off → ON
    		Below 1 V → 11 to 14 V
    D100-40 (B) - Body ground
    		L - Body ground
    		Battery
    		Always
    		11 to 14 V
    D101-1 (B) - Body ground
    		R - Body ground
    		Battery
    		Always
    		11 to 14 V
    If the result is not as specified, there may be a malfunction in the wire harness.

  3. Reconnect the D100 combination meter assembly connector.



  4. Measure the voltage, check for pulse and resistance of the wire harness side connector.

    Terminals No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    D100-5 (SI) - Body ground
    		L - Body ground
    		Speed signal (Input)
    		Driving at approximately
    20 km/h (12 mph)
    		Pulse generation
    (See waveform 1)
    D100-6 (+S) - Body ground
    		SB - Body ground
    		Speed signal (Output)
    		Driving at approximately
    20 km/h (12 mph)
    		Pulse generation
    (See waveform 1)
    D100-9 (S) - Body ground
    		Y - Body ground
    		Engine oil pressure signal
    		Engine oil pressure warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D100-10 (WLVL)*2 - Body ground
    		V - Body ground
    		Washer level warning signal
    		Ignition switch ON Washer level warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D100-11 (CHK) - Body ground
    		LG - Body ground
    		Check engine warning light signal
    		Check engine warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D100-12 (SW) - Body ground
    		GR - Body ground
    		Brake fluid level warning light signal
    		Ignition switch ON
    Brake fluid level warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D100-14 (-) - Body ground
    		BR - Body ground
    		High beam indicator signal (-)
    		Always
    		Below 1 V
    D100-16 (L) - Body ground
    		G - Body ground
    		Fuel level signal
    		Ignition switch ON
    Fuel level is FULL → EMPTY
    		Below 1 V → 4.5 to 9.0 V
    D100-17 (TC) - Body ground
    		SB - Body ground
    		TAIL cancel switch signal
    		TAIL cancel switch OFF → ON
    		10 kΩ or higher → Below 1 Ω
    D100-19 (+) - Body ground
    		GR - Body ground
    		High beam indicator signal (+)
    		High beam indicator ON → OFF
    		11 to 14 V → Below 1 V
    D100-20 (ILL+) - Body ground
    		R - Body ground
    		Taillight signal
    		Light control switch OFF → ON
    		Below 1 V → 11 to 14 V
    D100-31 (CANL) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D100-32 (CANH) - Body ground
    		G - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D100-33 (SW3) - Body ground
    		W - Body ground
    		Light control rheostat switch ground
    		Always
    		Below 1 Ω
    D100-34 (TX1-) - Body ground
    		B - Body ground
    		Outside temperature signal
    		Ignition switch ON outside temperature 25 °C
    		Approximately 1.3 V
    D100-35 (TX1+) - Body ground
    		W - Body ground
    		Ground
    (Temperature ground)
    		Always
    		Below 1 Ω
    D100-36 (SW2) - Body ground
    		Y - Body ground
    		Light control rheostat knob input
    		Light control rheostat knob fully turned downward
    		Below 1 Ω
    Light control rheostat knob fully turned upward
    		10 kΩ or higher
    D100-37 (SW1) - Body ground
    		G - Body ground
    		Power source for light control rheostat
    		Ignition switch ON
    		4.6 to 5.4 V
    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 Ω
    D101-7 (LR) - Body ground
    		V - Body ground
    		Right turn signal
    		Ignition switch ON
    Right turn indicator light OFF → ON
    		Below 1 V → 11 to 14 V
    D101-9 (ER) - Body ground
    		B - Body ground
    		Turn signal switch RH signal
    		Turn signal switch RH on
    		11 to 14 V
    Turn signal switch RH off
    		Below 1 Ω
    D101-10 (EL) - Body ground
    		Y - Body ground
    		Turn signal switch LH signal
    		Turn signal switch LH on
    		11 to 14 V
    Turn signal switch LH off
    		Below 1 Ω
    D101-12 (FOG)*1 - Body ground
    		BE - Body ground
    		Front fog signal
    		Ignition switch ON
    Front fog switch OFF → ON
    		Below 1 V → 11 to 14 V
    D101-13 (LL) - Body ground
    		LG - Body ground
    		Left turn signal
    		Ignition switch ON
    Left turn indicator light OFF → ON
    		Below 1 V → 11 to 14 V
    1. *1: w/ Fog Light
    2. *2: w/ Washer Level Warning
    If the result is not as specified, the combination meter assembly may have a malfunction.


      Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu

    1. Waveform 1: Using an oscilloscope

      Terminal Connections
      		D100-6 (+S) and Body ground
      D100-5 (SI) and Body ground
      Tool Setting
      		5 V/DIV, 20 ms/DIV
      Condition
      		Driving at approximately 20 km/h (12 mph)
      HINT:
      As the vehicle speed increases, the cycle of the signal waveform narrows.

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (2 Connector Type)

Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Text in Illustration
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU
(Multiplex Network Body ECU)

  1. Remove the main body ECU (multiplex network body ECU) (YARIS_NCP93 RM000003TOE00CX.html).

  2. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MB-11 (GND1) - Body ground
    		None - Body ground
    		Ground
    		Always
    		Below 1 Ω
    MB-29 (ACC) - Body ground
    		None - Body ground
    		Ignition power supply (ACC signal)
    		Ignition switch ACC
    		11 to 14 V
    MB-30 (BECU) - Body ground
    		None - Body ground
    		+B (power system signal system) power supply
    		Always
    		11 to 14 V
    MB-32 (IG) - Body ground
    		None - 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 on the wire harness side.

  3. Install the main body ECU (multiplex network body ECU) (YARIS_NCP93 RM000003TOC00CX.html).

  4. Measure the voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3A-28 (PKB) - Body ground
    		R - Body ground
    		Parking brake signal
    		Parking brake warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D143-13 (CANL) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D143-14 (CANH) - Body ground
    		R - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    If the result is not as specified, there may be a malfunction in the wire harness.

CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (1 Connector Type)

Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Text in Illustration
*1
Instrument Panel Junction Block Assembly
*2
Main Body ECU
(Multiplex Network Body ECU)

  1. Remove the main body ECU (multiplex network body ECU) (YARIS_NCP93 RM000003TOE00CX.html).

  2. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    MB-11 (GND1) - Body ground
    		None - Body ground
    		Ground
    		Always
    		Below 1 Ω
    MB-29 (ACC) - Body ground
    		None - Body ground
    		Ignition power supply (ACC signal)
    		Ignition switch ACC
    		11 to 14 V
    MB-30 (BECU) - Body ground
    		None - Body ground
    		+B (power system signal system) power supply
    		Always
    		11 to 14 V
    MB-32 (IG) - Body ground
    		None - 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 on the wire harness side.

  3. Install the main body ECU (multiplex network body ECU) (YARIS_NCP93 RM000003TOE00CX.html).

  4. Measure the voltage between each terminal of the wire harness side connectors and body ground.

    Terminal No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    3A-28 (PKB) - Body ground
    		R - Body ground
    		Parking brake signal
    		Parking brake warning light ON → OFF
    		Below 1 V → 11 to 14 V
    D143-13 (CANL) - Body ground
    		W - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    D143-14 (CANH) - Body ground
    		R - Body ground
    		CAN communication line
    		Ignition switch ON
    		Pulse generation
    If the result is not as specified, there may be a malfunction in the wire harness.

COMBINATION METER INTERNAL CIRCUIT

Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Yaris. Ncp93, 131.Meter Gauge Display.Meter / Gauge System (For Sedan).Meter / Gauge System (For Hatchback) Terminals Of Ecu


Connectors
Terminal No.
Wire Harness Side

5
Brake actuator assembly (skid control ECU)*1 or Speedometer Sensor*2
6
Other ECU
9
Engine oil pressure switch assembly
10*4
Washer level warning switch
11
ECM
12
Brake fluid level warning switch
14
Body ground
16
Fuel sender gauge assembly
17
Light control rheostat
19
H-LP LH HI fuse
20
Panel fuse
21
Body ground
31
CAN communication line
32
CAN communication line
33
Light control rheostat
34
Ambient temperature sensor
35
Ambient temperature sensor
36
Light control rheostat
37
Light control rheostat
39
IG2 relay
40
Battery
D101
1
Battery
3
Hazard warning signal switch assembly
7
Turn signal light RH
9
Headlight dimmer switch assembly (Turn signal switch)
10
Headlight dimmer switch assembly (Turn signal switch)
12
FR FOG relay*3
13
Turn signal light LH
  1. *1: w/ ABS
  2. *2: w/o ABS
  3. *3: w/ Fog Light
  4. *4: w/ Washer Level Warning