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[T] : Ground Points

Code See Page Ground Points Location
BL POSITION OF PARTS IN ENGINE COMPARTMENT Under the Left Center Pillar
BO POSITION OF PARTS IN ENGINE COMPARTMENT Back Panel Center
  1. [O]  : Explains the system outline.
  2. [P]  : Indicates the reference page showing the position on the vehicle of the parts in the system circuit.

    Example: Part "L4" (Light Failure Sensor) is on page 36 of the manual.

    * The letter in the code is from the first letter of the part, and the number indicates its order in parts starting with that letter.

    Fig 1: L4 Light Failure Sensor Reference Page Example
    G08865942Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. [Q]  : Indicates the reference page showing the position on the vehicle of Relay Block Connectors in the system circuit.

    Example: Connector "1" is described on page 18 of this manual and is installed on the left side of the instrument panel.

  4. [R]  : Indicates the reference page showing the position on the vehicle of J/B and Wire Harness in the system circuit.

    Example: Connector "3C" connects the Instrument Panel Wire and J/B No.3. It is described on page 22 of this manual, and is installed on the instrument panel left side.

  5. [S]  : Indicates the reference page describing the wiring harness and wiring harness connector (the female wiring harness is shown first, followed by the male wiring harness).

    Example: Connector "IE1" connects the floor wire (female) and Instrument panel wire (male). It is described on page 42 of this manual, and is installed on the left side kick panel.

  6. [T]  : Indicates the reference page showing the position of the ground points on the vehicle.

    Example: Ground point "BO" is described on page 50 of this manual and is installed on the back panel center.

The ground points circuit diagram shows the connections from all major parts to the respective ground points. When troubleshooting a faulty ground point, checking the system circuits which use a common ground may help you identify the problem ground quickly. The relationship between ground points ( , and shown below) can also be checked this way.

Fig 2: Ground Point System Wiring Diagram Example
G08865943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The "Current Flow Chart" section, describes which parts each power source (fuses, fusible links, and circuit breakers) transmits current to. In the Power Source circuit diagram, the conditions when battery power is supplied to each system are explained. Since all System Circuit diagrams start from the power source, the power source system must be fully understood.

Fig 3: Power Source Current Flow Chart
G08865944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Connector End View
G08865945Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Indicates connector to be connected to a part. (The numeral indicates the pin No.)
  2. Junction Connector

    Indicates a connector which is connected to a short terminal.

    Junction connector in this manual include a short terminal which is connected to a number of wire harnesses. Always perform inspection with the short terminal installed. (When installing the wire harnesses, the harnesses can be connected to any position within the short terminal grouping. Accordingly, in other vehicles, the same position in the short terminal may be connected to a wire harness from a different part.)

    Wire harness sharing the same short terminal grouping have the same color.

    Fig 5: Identifying Junction Connector And Short Terminal
    G08865946Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. Parts Code

    The first letter of the code is taken from the first letter of part, and the numbers indicates its order in parts which start with the same letter.

  4. Connector Color

    Connectors not indicated are milky white in color.

  5. Indicates the connector shapes which are used to join wire harnesses.

    On Left: Female connector shapes

    On Right: Male connector shapes

    Numbers indicate pin numbers.

  6. Indicates connector colors. (Connectors with not indicated colors are white)
Fig 6: Connectors Part Number List
G08865947Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Part Code
  2. Part Name
  3. Part Number

    Toyota Part Number are indicated

Not all of the above part numbers of the connector are established for the supply.

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