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Home >> Lexus >> 2011 >> RX 350 AWD >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> OEM Electrical Wiring Diagram General Information >> How To Use This Service Information >> [T] : Ground Points

[T] : Ground Points

Code See Ground Points Location
H1 POSITION OF PARTS IN BODY Under the Left Center Pillar
H2 POSITION OF PARTS IN BODY Back Panel Center

[P]  : Indicates appropriate references showing the parts locations in the system circuit on the vehicle.

Example : Code "H4" (Light Failure Sensor).

* The first character of the code indicates the alphabetical code allocated to the wire harness, and the second character indicates the serial number of the parts connected to the wire harness.

Fig 1: Example Of Code H4 Light Failure Sensor
G07575913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

[Q]  : Indicates the appropriate references showing the position on the vehicle of Relay Block Connectors in the system circuit.

Example : Connector "1" is described in the service information and is installed on the left side of the instrument panel.

[R]  : Indicates the appropriate references 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 in the service information, and is installed on the instrument panel left side.

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

Example : Connector "CH1" connects the Engine Room Main Wire (female) and Instrument Panel Wire (male). It is described in the service information, and is installed on the left side kick panel.

[T]  : Indicates the appropriate references showing the position of the ground points on the vehicle.

Example : Ground point "H2" is described in the service information 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 (A1, A2 and D4 shown in the diagram below) can also be checked this way.

Fig 2: Ground Points Circuit Diagram
G07575914Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

The "Current Flow Chart" service information, 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

Fig 3: Power Source Current Flow Chart (Example)
G07575915Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Identifying Connectors (A1-BD2)
G07575916Courtesy 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.

    Fig 5: Identifying Junction Connector And Short Terminal
    G07575917Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Junction connector in this service information include a short terminal which is connected to a number of wire harnesses. Always perform inspection with the short terminal installed.

  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 Reference Chart
G07575918Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. Part Code
  2. Part Name

    The text in the parentheses is additional parts information.

  3. Part Number

    Toyota Part Number are indicated.

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