003 Introduction


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ECAD E250BN003001 3 1 ENG_CDSID 2025 MUSTANG DES_CDSID CDSID Complete Circuit Operation Note Each circuit is shown completely and independently in one cell. Other they influence the circuit operation. components that are connected to the circuits may not be shown unless complicated components has been simplified. aid in understanding electrical (electronic) operation, wiring inside schematic from one that is only a few inches long. Furthermore, to For example, a 4-foot length of wire is treated no differently in a as they physically appear on the vehicle. has been made on the schematics to represent components and wiring exist in the vehicles. It is important to realize, however, that no attempt All wiring connections between components are shown exactly as they

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ECAD E250BN003002 3 2 ENG_CDSID 2025 MUSTANG DES_CDSID CDSID Current Flow (1) Switch Positions (2) "at rest" (ignition switch OFF). Within a schematic, all switches, sensors and relays are shown Component Referencing (4) or the page where it is shown completely. The reference is located to the right of each component. Components on a schematic have a reference to a component location view Component Names (5) component when possible. Descriptions of the internals of the component are also included when available. The page where the component appears in full is listed in the Index.The base part number for a component is listed in cell 150 "Connector Views." Component names are placed on the right hand side of each number located within it. You can identify the internal symbol or function by finding the corresponding number under the component name. Some components on each page have internal symbols with an identification Internal Name and Function Identification Numbers (6) Examples: NOTE: Refer to cell 150 "Connector Views" for circuit functions. Standard Circuit Numbering System, Global Circuit Numbering System, and New Global Circuit Numbering System (NGCNS). With each, the circuit number Ford Motor Company uses three different circuit numbering conventions: (which identifies a specific circuit function) is followed by the wire color. and is determined directly from the wire's circuit number. In the schematics, the wire colors are indicated next to the wires. The colors are abbreviated using the international norm IEC 757. The abbreviations are listed in cell 4 "Symbols." The wire identification consists of a basic color and possibly a stripe, Circuit Numbering and Wire Identification (7) Splices (3) "Power Distribution." Splices connected to grounds can be represented on the power distribution schematic in cell 13 seen completely in cell 10 "Grounds." For all other splices, a reference is given to each off page where that particular splice can be best viewed. Splices directly connecting to the power distribution are best such as a fuse or the ignition switch. Current flow is shown from the power source at the top of the page to ground at the bottom of the page. Full representation of the ground connections are shown in cell 10 "Grounds." A full representation of the power supply of a fuse or the power distribution Each cell normally starts with the component that powers the circuit, from a fuse to various components is given in cell 13 "Power Distribution." JUNCTION CENTRAL BOX (CJB) S289 CIGAR LIGHTER POWER POINT C270H 4 6 13-5 13-5 13-6 CLUSTER AND PANEL ILLUMINATION NETWORK MODULE COMMUNICATIONS Hot at all times 1 2 6 3 5 4 6 7a 7c 7b 1049 BN-PK 1 C2033 C2033 3 1 2 GD133 BK G202 S203 3 C2031 LB-RD 19 2 C2031 1 OG 64S-LK11 LB-WH 40 S279 BK 57 11-1 151-12 151-10 151-9 1) Off 2) On 20A F41 20A F39 20A F37 71-1 10-5 14-1 Standard (a) Global (b) NGCNS (c) WH-VT 218 BK-RD 31S-AC3A GY-OG CRW12

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ECAD E250BN003003 3 3 ENG_CDSID 2025 MUSTANG DES_CDSID CDSID pin positions are added to illustrate proper orientation. In addition, for all removable relays, follow the indication of the fuse panel cover. Fuse and relay numbering and naming which fuses and relays are identified, numbered and named. contains a view of the fuse/relay box in Cell 11 "Fuse and Relay Information" between the fuse and the first component are shown. All details (wires, splices, connectors) from the fuse to the component. by each fuse. The circuit is traced It also shows the circuits protected The current path is shown from the battery to the ignition switch and to all fuses. shows the current feed circuits. Cell 13 "Power Distribution" Fuse and Relay Information Power Distribution R06 R05 R04 87A 30 86 87 85 85 87 86 30 87A 87A 30 86 87 85 F7 F27 F28 F29 F21 F20 F19 F18 F16 F13 F15 F14 F11 F10 F8 F17 3 5 2 30 85 RUN POWER DISTRIBUTION POWER DISTRIBUTION POWER DISTRIBUTION 5 1 7 DG 65 478 TN-OG 6 2 C162 2 C152 D 5 RIGHT FOG LAMP, LEFT FOG LAMP, C270H 2 C202B 9 SWITCH MULTIFUNCTION C270G 4 12 C270F 2 6 WIPER MOTOR WINDSHIELD 8 C125 INSTRUMENT CLUSTER STARTING SYSTEM RD-LB 32 C IGNITION SWITCH RELAY FOG LAMP HI BEAM RELAY CENTRAL JUNCTION BOX (CJB) PWR SOL OFF ACC START KEY IN 964 DB-LG 489 PK-BK 297 BK-LG 1050 LG-PK 275 YE 12 LG-BK WH-BK 188 BK-PK 158 B 17 C220B 6 C250 C250 4 12 C270A MAIN LIGHT SWITCH 5 C205A S108 86 87 1 A 20A F35 86-1 86-1 86-1 85-1 81-1 60-1 20-1 13-3 13-2 151-10 10A F1 13-3 20A F102 11-3 151-1 15A F17 13-3

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ECAD E250BN003004 3 4 ENG_CDSID 2025 MUSTANG DES_CDSID CDSID Ground Distribution Component and Connector Information components and their connecting wires as they can be found on the vehicle. Cell 151 "Component Location Views" shows the The circuit function charts are located below each connector. The wiring harness designations are listed in cell 152 "Component Location Charts." number is located above the connector view and below the connector number. the connector number when available. The harness causal The color of the connector housing is indicated next to cavity sides are shown separately as if the connector were disconnected. pins and/or cavities of all connectors. The pin and Cell 150 "Connector Views" show the views of the with a reference to the component location views. A brief written description of the location is given, along physically be found on the vehicle. where the various items depicted on the schematic can Cell 152 "Component Location Charts" helps the user find individual cell schematics as uncluttered as possible. connection details are shown here in order to keep the point and the component are shown. These ground All details (wires, splices, connectors) between the ground Cell 10 "Grounds" contains the schematic that problem affecting several components at once (poor ground connection or ground splice). or main ground splice. This is useful in diagnosing a shows the complete details for each ground connection (13M614) REAR DOME/ MAP LAMP 14290 1 2 3 (GY) C904 (LG-OG) (BK-LB) (BK) 2 Qualifier Circuit Courtesy lamp switch to courtesy lamp Ground circuit Battery saver lamp feed 20 Circuit Function 3 1 Pin Gauge 20 20 53 57 705 G310 DVD/RSC SUBWOOFER C315-2 BK-OG 1204 1204 BK-OG 1204 BK-OG S329 1204 BK-OG 10-7 130-4 130-1

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ECAD E250BN003005 3 5 ENG_CDSID 2025 MUSTANG DES_CDSID CDSID WARNINGS Always wear safety glasses for eye protection. Do not smoke when working on a vehicle. To avoid injury, always remove rings, watches, loose hanging jewelry and avoid wearing loose clothing. present in and around the battery cell. An explosion could occur. Do not allow flame or sparks near the battery. Gases are always muffler. the radiator, exhaust manifold, tail pipe, catalytic converter and To prevent serious burns, avoid contact with hot metal parts such as engine is running. Keep away from moving parts, especially the fan and belts, when the carbon monoxide. Operate the engine only in a well-ventilated area to avoid danger of NEUTRAL. transmission should be in PARK. A manual transmission should be in Set the parking brake when working on any vehicle. An automatic Use safety stands whenever a procedure requires being under a vehicle. Be sure that the IGNITION SWITCH is always in the OFF position, unless otherwise required by the procedure. !