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Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK COMBINATION METER ASSEMBLY 
    Fig 1: Identifying ECU Terminals
    G04440688Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TERMINALS AND REFERENCE VALUE

    Terminal No. Condition Specified Condition
    C12-4 - Body ground Ignition switch ON,
    Turn signal switch LEFT    		 10 to 14 V
    Ignition switch ON,
    Turn signal switch OFF and RIGHT    		 Below 1 V
    C12-5 - Body ground Ignition switch ON
    Light control switch ON    		 10 to 14 V
    Ignition switch ON
    Light control switch OFF    		 Below 1 V
    C12-6 - Body ground Ignition switch ON,
    Turn signal switch RIGHT    		 10 to 14 V
    Ignition switch ON,
    Turn signal switch OFF and LEFT    		 Below 1 V
    C12-10 - Body ground Ignition switch ON 10 to 14 V
    Ignition switch OFF Below 1 V
    C12-12 - Body ground Ignition switch ON,
    ABS indicator light ON    		 10 to 14 V
    Ignition switch ON,
    ABS indicator light OFF    		 Below 1 V
    C13-2 - C15-4 Ignition switch ON,
    Fuel level F    		 Below 1 V
    Ignition switch ON,
    Fuel level E    		 4 to 7 V
    C13-12 - Body ground Always 10 to 14 V
    C13-13 - Body ground Ignition switch ON,
    TIRE PRESSURE indicator light ON    		 10 to 14 V
    Ignition switch ON,
    TIRE PRESSURE indicator light OFF    		 Below 1 V
    C13-14 - Body ground Ignition switch ON,
    Center differential lock switch ON    		 10 to 14 V
    C14-11 - Body ground Ignition switch ON,
    Seat belt is unfastened    		 10 to 14 V
    Ignition switch ON,
    Seat belt is fastened    		 Below 1 V
    C14-14 - Body ground Ignition switch ON,
    Charge warning light ON    		 10 to 14 V
    Ignition switch ON,
    Charge warning light OFF    		 Below 1 V
    C14-18 - Body ground Ignition switch ON,
    Parking brake lever is released    		 10 to 14 V
    Ignition switch ON,
    Parking brake lever is pulled    		 Below 1 V
    C15-6 - C15-2 Ignition switch ON,
    Fuel sender gauge float UP    		 Approx. 0.5 V
    Ignition switch ON,
    Fuel sender gauge float DOWN    		 Approx. 5.5 V
    C15-7 - Body ground Ignition switch ON,
    Light control rheostat volume minimum    		 10 to 14 V
    Ignition switch ON,
    Light control rheostat volume maximum    		 Below 1 V
    C15-8 - Body ground Light control switch TAIL 10 to 14 V
    Light control switch OFF Below 1 V
    C15-9 - Body ground Key unlock warning switch OFF (key is removed) 10 to 14 V
    Key unlock warning switch ON (key is inserted) Below 1 V
    C15-10 - Body ground Ignition switch ON,
    Driver side door is closed    		 10 to 14 V
    Ignition switch ON,
    Driver side door is opened    		 Below 1 V
    C15-11 - Body ground Ignition switch ON 10 to 14 V
    Ignition switch OFF Below 1 V
    C15-13 - Body ground Ignition switch ACC 10 to 14 V
    Ignition switch OFF Below 1 V
    C15-15 - Body ground Engine is running Pulse generation
    C15-16 - Body ground Ignition switch ON, Slowly turn wheel Pulse generation

    If the result is not as specified, the combination meter may be malfunctioning.

    Fig 2: Circuit Diagram - Meter/Gauge System (1 Of 3)
    G04440689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Circuit Diagram - Meter/Gauge System (2 Of 3)
    G04440690Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Circuit Diagram - Meter/Gauge System (3 Of 3)
    G04440691Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Table of Terminal Connection 

    TERMINAL CONNECTION REFERENCE

    Terminal No. Wire harness side
    C12 1 -
    2
    3 Body ECU
    Suspension Control ECU
    4 Front Combination Light LH
    Rear Combination Light RH
    5 HEAD LH-LWR Fuse
    6 Front Combination Light RH
    Rear Combination Light LH
    7 Combination Switch Assembly
    8 -
    9
    10 MET Fuse
    11 -
    12 Skid Control ECU
    13 -
    14
    15
    16
    17
    18
    19
    20

    Table of Terminal Connection 

    TERMINAL CONNECTION REFERENCE

    Terminal No. Wire harness side
    C13 1 -
    2 -
    3 -
    4 Suspension Control ECU
    5
    6
    7
    8 PANEL Fuse
    9 -
    10
    11 ECM
    12 -
    13 Tire Pressure Monitor ECU
    14 Detection Switch (Center Diff. Lock)
    15 Skid Control ECU
    16
    17
    18
    19 Center Airbag Sensor Assembly
    20 -

    Table of Terminal Connection 

    TERMINAL CONNECTION REFERENCE

    Terminal No. Wire harness side
    C14 1 Body ECU
    2 -
    3
    4 Center Airbag Sensor Assembly
    5 -
    6
    7 Oil Pressure Sensor
    8 -
    9
    10 DLC3
    11 Buckle Switch Assembly
    12 -
    13
    14 Body ECU
    15 -
    16 Multi-display
    17
    18 Parking Brake Switch Assembly
    19 Skid Control ECU
    20 Brake Actuator

    Table of Terminal Connection 

    TERMINAL CONNECTION REFERENCE

    Terminal No. Wire harness side
    C15 1 Body Ground
    2 Fuel Sender Gauge Assembly
    3 -
    4 Fuel Sender Gauge Assembly
    5 -
    6 Fuel Sender Gauge Assembly
    7 Light Control Rheostat
    8 -
    9 Unlock Warning Switch Assembly
    10 Body ECU
    11 GAUGE1 Fuse
    12 ECU-B2 Fuse
    13 ECU-IG1 Fuse
    14 DOME Fuse
    15 Vehicle Speed Sensor
    16 ECM
    Body ECU
    A/C Control Assembly
    Multi-display
    Navigation ECU
    Tire Pressure ECU
    17 -
    18
    19 Gateway ECU A/C Control Assembly
    20
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