Table of Contents Wiring Diagrams and Associated Documents Subject Page Introduction .3 Schematics.3 General Guidelines.3 Circuit Symbols .5 Wire Color Abbreviations .13 Initial Print Date: 10/10 Revision Date: Wiring Diagrams and Associated Documents Model: All Production: All BBIECIIMIS After completion of this module you will be able to: • Demonstrate accurate and efficient use of Wiring Diagrams. • Understand general conventions that dictate the format of how wiring schematics are drawn. • Locate correct schematics using a variety of different methods. • Correctly interpret symbols and identifying common devices that are often used in the wiring schematics. • Identify the location of critical components used in the schematics. • Demonstrate a knowledgeable understanding of associated documentation often used in conjunction with the wiring schematics. 2 Wiring Diagrams and Associated Documents Introduction Schematics The schematics divide the vehicle electrical system into individual circuits. Components which interact with that circuit are shown on the same schematic. In order to provide a standard for the way in which a Wiring Diagram (SSP) is written and read, there are general rules that apply. Components are drawn in such a way that their general layout and function are self-explanatory. They are arranged on the page so that the current path can be followed from positive (top) to negative (bottom). General Guidelines Wiring Diagram “SSP-SP0000020123 LH Rear Seatback Adjustment” will be used as an example. 1. Switches and relays are always shown in their rest position, (e.g. K135) 2. A component drawn in a dotted line indicates that only part of the component is shown, (e.g. A3) 3. A component drawn as a solid line indicates that all of that component is shown. (SI 0494) 4. The dotted line between pins 4, 2 of connector XI0663, pins 5, 6 and 4, 3, 1 of connector XI0494, pins 5, 6, 1 and 4, 3 of connector XI0496, pins 1,2 of connec¬ tor XI 0498, indicate that all the pins belong to that connector. 5. Terminal operation is usually noted within a component box. (e.g. 15, 30, etc.) 6. Component designation is shown to the right of the box. (e.g. A3, K135, etc.) 7. Component name is shown under Component designation, (e.g. Light module; Relay, rear compartment backrest) 8. Splice points are shown between components, noted by a connector number, (e.g. XI0664, XI019, etc.) 9. Signal name, wire cross section and color are noted as a list to the right of the wire between components, (e.g. 58G, 0.5, GR/RT). Of note, the wire cross section is given in sguare millimeters (mm 2 ). To obtain more information on a component or signal select any blue hotbox on the wiring diagram (additional information should appear to the left of the SSF) such as EBO, STA, PIB, etc.). It is also helpful to press the Installation button, on the lower left of the navigation bar on ISTA, after selecting a component’s blue hotbox. This will show you all relevant SSP regarding the component you just selected. 3 Wiring Diagrams and Associated Documents SSP-SP0000020123 LH Rear Seatback Adjustment imx , re at compaT- m^ni tarlVMt ar|iis»- Moicif. fc*a ns«ii ccnpartnoni back- 4 Wiring Diagrams and Associated Documents Circuit Symbols In order to work effectively with the ETM, the technician has to understand the meaning of the symbols used to represent electrical components and connections. BATTERY jj FUSE DETAILS SOLENOID CONTROLLED VALVE OR CLUTCH SOLENOID HEATING ELEMENT r LOUDSPEAKER OR HORN CIRCUIT BREAKER LIGHT •''y THERMO SWITCH -V PERMANENT MAGNET MOTOR ONE SPEED SOLENOID PERMANENT MAGNET MOTOR TWO SPEEDS 5 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) X VARIABLE RESISTANCE SENSOR VARIABLE CONTACT IS MOVED BY AN EXTERNAL FORCE IGNITION COIL VARIABLE RESISTOR RESISTANCE IS CHANGED BY TEMPERATURE OR PRESSURE CONTROL/POWER ELECTRONICS N INDUCTIVE SENSOR 1 B I s g RADIO | DIODE 1 CURRENT CAN FLOW ONLY T IN DIRECTION OF ARROW ZENER DIODE TO REGULATE VOLTAGE TRANSISTORIZED SWITCH OXYGEN SENSOR VEHICLE SPEED SENSOR UGHT EMITTING DIODE X T HALL SENSOR KNOCKSENSOR 6 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) ENTIRE COM¬ PONENT SHOWN CONNECTOR ATTACHED TO COMPONENT LEAD (PIGTAIL) r-i I I I I L_J PART OF COM¬ PONENT SHOWN ONE POLE, TWO POSITION SWITCH COMPONENT WITH SCREW TERMI¬ NALS SWITCHES THAT MOVE TOGETHER DASHED LINE SHOWS A MECHANICAL CONNECTION BETWEEN SWITCHES COMPONENT CASE ATTACHED DIRECTLY TO METAL PART OF CAR (GROUNDED) CONNECTOR ATTACHED TO COMPONENT .5 BR TWO CONNEC¬ TIONS (PINS) IN THE SAME CONNECTOR DASHED LINE INDI¬ CATES TERMINALS OF THE SAME CONNECTOR 7 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) WIRE INSULATION IS ONE COLOR . 5 BR PIN NUMBER 4 ♦ X270 .5 BR CONNECTOR REF¬ ERENCE NUMBER FOR COMPONENT LOCATION CHART WIRE INSULATION IS ONE COLOR WITH ANOTHER COLOR STRIPE (GREEN WITH WHITE) .75 GN/WS A WAVY LINE MEANS WIRE IS CONTINUED WIRE SIZE IN MM SQUARED \ .75 BR WIRE ATTACHED TO METAL PART OF CAR (GROUNDED) .£. X165 GROUND NUMBERED FOR REFERENCE ON COMPONENT LOCATION CHART 8 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) T 1 £_ 301 86 CONTACT RELAY n 85 # \ f RELAY WITH RESISTOR ACROSS WINDING CONTACT RELAY WITH TWO OUT¬ PUTS CHANGEOVER RELAY WITH TWO OUTPUTS TERMINAL NUMBER DESCRIPTION 30 RELAY INPUT 85 RELAY OUTPUT (WINDING) 86 RELAY INPUT (WINDING) 87 RELAY OUTPUT (ENERGIZED) 87a RELAY OUTPUT (AT REST) 9 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) ■R' IS ENERGIZED IN ACCY, RUN, OR START TERMINAL NUMBER DESCRIPTION TERMINAL NUMBER DESCRIPTION 50 VOLTAGE: IGNITION 151 SWITCH IN START VOLTAGE: IGNITION SWITCH IN RUN 30 VOLTAGE: SUPPUED R AT ALL TIMES 15 VOLTAGE: IGNI- 31 TION SWITCH IN RUN OR START VOLTAGE: IGNITION SWITCH IN ACCESSORY RUN OR START GROUND HOT AT ALL TIMES FT» 1\ | \ 15A | \ l £ j INDICATES THAT FUSE 9 IS SUP¬ PLIED WITH POWER AT ALL TIMES POWER STATUS HOT AT ALL TIMES DESCRIPTION VOLTAGE: SUPPUED AT ALL TIMES HOT IN RUN AND START VOLTAGE: IGNITION SWITCH IN RUN OR START HOT IN ACCY, RUN AND START VOLTAGE: IGNITION SWITCH IN ACCESSORY RUN OR START 10 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) HOT IN ACCY, RUN ANO START ni- tp9o | S £15 | front power | i 15A j DISTRIBUTION BOX J-1 I I I FUSE DETAILS 17lX25: r- L -n X252 N1 I J7-5] I ANTI-THEFT Is2 ‘control L — J MODULE (DWA) THE COMPLETE WIRE PROGRESSION AND FURTHER CIRCUITS CONNECTED TO FUSE 18 ARE SHOWN IN CELL '0670.3 FUSE DETAILS' AT FUSE 18 I-1 A2 0 ’T N9 | RADIO I L | J 15 V X18126 I"--1 A1 GENERAL MODULE I-,-I X332 I I I GROUND " DISTRIBUTION I ■ft X497 THE COMPLETE WIRE PROGRES¬ SION AND FUR¬ THER CIRCUITS CONNECTED TO GROUND X497 ARE SHOWN IN CELL *0670.4 GROUND DISTRIBUTION* AT GROUND X497 1.5 BR CURRENT PATH IS CONTINUED AS LABELED 1.5 BR ARROW SHOWS DIRECTION OF CURRENT FLOW AND IS REPEATED WHERE CURRENT PATH CONTINUES .JJ.X491 11 Wiring Diagrams and Associated Documents Circuit Symbols (cont.) 12 Wiring Diagrams and Associated Documents DRIVERS LEFT Ri Wire Color Abbreviations Abbreviation English German TR Transparent Transparent WS White WeiB VI Purple Violett BL Blue Blau BR Brown Braun GR Gray Grau OR Orange Orange RT Red Rot SW Black Schwarz 13 Wiring Diagrams and Associated Documents 14 Wiring Diagrams and Associated Documents