Fragment of the electrical equipment diagram
Symbols on the diagrams:
- A - The position of the key in the ignition switch is indicated, at which the supply voltage is present in this circuit (HOT AT ALL TIMES - the voltage is supplied constantly, regardless of the position of the key, HOT IN ON OR START - the voltage is supplied when the ignition is turned on or when the engine is started);
- B - The dashed line indicates that the diagram shows a fragment of a block, device or element;
- C - The contact number in the switching unit in the engine compartment is indicated;
- D - Name of the block or element, and the number of the photograph showing the location of this element in the car.
- E - A solid line indicates a block, device or element;
- F - An additional condition for the operation of the element is indicated (in this case: contact "A" is open, and contact "B" is closed when the brake pedal is not pressed);
- G - Designation of the connector number and contact numbers in the connector of this element;
- H - Conventional designation of the switching connector (Joint Connector);
- J - Designation of cross-section and color marking of wire;
- K - Indication of a corresponding diagram or element of electrical equipment that must be considered in conjunction with the given diagram;
- L - Designation of input or output signal.
Designation of connection to the vehicle ground
Harnesses and connectors
Classification and designation of harnesses:
- E - Engine bay harnesses (Engine Room Harness & Engine Front Harness)
- C - Engine control system harnesses (Control Hamess)
- M - Main harnesses in the passenger compartment under the dashboard (Main Harness) and ceiling harnesses (Roof Harness)
- F - Floor harnesses (Floor Harness)
- A - Harnesses of the passive safety system (Air Bag Hamess)
- D - Door harnesses (Door Harness)
- S - Front seat harnesses with electric adjustments and heating (Front Power Seat Harness)
- R - Rear Harnesses (Rear Hamess): luggage compartment harnesses (Trunk Room Harness) and trunk lid harnesses (Trunk Lid Hamess)
Classification and designation of connectors:
- Switching unit connectors (relay and fuse box). Designation: I/P - A — L.
- Wiring Harness Connectors (Harness Connector). Designation: two letters and two numbers (for example: EM 01 - connector connecting the engine compartment harness (E) and the main harness (M) under the dashboard).
- Switching connectors (Joint Connector), are designated on the diagrams by one letter and numbers (for example, E57).
- Connectors located directly on blocks or components are also designated by one letter and numbers (for example, E62).
- If there are several connectors in the corresponding block, after the number (separated by a dash) the number corresponding to the connector number in this block is indicated (for example, C144-1).
Type and designation of connectors, contact numbering order
Connector markings
Wire marking
The diagrams show the marking of wires using alphanumeric symbols.
For example: 1.25 G or 0.5 L/O.
The numbers indicate the cross-section of the wire, in this example - 1.25 or 0.5 sq. mm. The letter (or letters) indicate the color of the wire insulation. One letter - a single-color wire, in this case - green; Two letters - two-color wire: the first letter is the main color of the insulation (blue), the second letter is the designation of the color of the strip (orange).
Wire color designation: B (Black) - black; Br (Brown) - brown; G (Green) - green; Gr (Grey) - gray; L (Blue) - blue; Lg (Light Green) - light green; T (Tan) - yellow-brown; ABOUT (Orange) - orange: P (Pink) - pink; R (Red) - red: W (White) - white; Y (Yellow) - yellow; Rr (Purple) - dark red; LI (Light Blue) - blue.