Section 12-03A: Air Conditioning System—Manual A/C-Heater | 1994 Mustang Workshop Manual |
| Pin Number | Circuit | Circuit Function |
|---|---|---|
| 1 | 315 (P/O | Shift Solenoid #2 Output |
| 2 | 658 (PK/LG) | Malfunction Indicator Lamp |
| 3 | — | Not Used |
| 4 | 229 (R/O) | Low Fan Control Monitor Input |
| 5 | — | Not Used |
| 6 | — | Not Used |
| 7 | — | Not Used |
| 8 | — | Not Used |
| 9 | — | Not Used |
| 10 | — | Not Used |
| 11 | — | Not Used |
| 12 | — | Not Used |
| 13 | 107 (P) | Flash EEPROM Power Supply Pin |
| 14 | — | Not Used |
| 15 | 915 (PK/LB) | Data Link Connector (DLC) Bus (-) |
| 16 | 914 (T/O) | Data Link Connector (DLC) Bus (+) |
| 17 | 639 (LG/P) | High Fan Control Output |
| 18 | — | Not Used |
| 19 | — | Not Used |
| 20 | — | Not Used |
| 21 | — | Not Used |
| 22 | — | Not Used |
| 23 | 259 (O/R) | Ignition Ground |
| 24 | 136 (DB/Y) | Power Ground |
| 25 | 57 (BK) | Case Ground |
| 26 | — | Not Used |
| 27 | 237 (O/Y) | Shift Solenoid #1 Output |
| 28 | — | Not Used |
| 29 | 224 (T/W) | Transmission Control Switch Input |
| 30 | 242 (DG) | Octane Adjust Input |
| 31 | — | Not Used |
| 32 | — | Not Used |
| 33 | 676 (PK/O) | Vehicle Speed Sensor (VSS) Input (-) |
| 34 | — | Not Used |
| 35 | 392 (R/LG) | Right Rear Heated Oxygen Sensor (HO2S) Input |
| 36 | 968 (T/LB) | Mass Air Flow Sensor Return |
| 37 | 923 (O/BK) | Transmission Oil Temperature Sensor Input |
| 38 | 354 (LG/R) | Engine Coolant Temperature Sensor Input |
| 39 | 743 (GY) | Inlet Air Temperature Sensor Input |
| 40 | 238 (DG/Y) | Fuel Pump Monitor Input |
| 41 | 198 (DG/O) | Air Conditioning Cycling Switch Input |
| 42 | — | Not Used |
| 43 | — | Not Used |
| 44 | — | Not Used |
| 45 | — | Not Used |
| 46 | — | Not Used |
| 47 | 360 BR/PK) | EGR Vacuum Regulator (EVR) Output |
| 48 | 659 (O/W) | Ignition Diagnostic Monitor Input |
| 49 | 395 (GY/O) | Profile Ignition Pickup (PIP) Input |
| 50 | 929 (PK) | Spark (SPOUT) Output |
| 51 | 570 (BK/W) | Power Ground |
| 52 | — | Not Used |
| 53 | — | Not Used |
| 54 | — | Not Used |
| 55 | 37 (Y) | Keep Alive Power |
| 56 | — | Not Used |
| 57 | — | Not Used |
| 58 | 679 (GY/BK) | Vehicle Speed Sensor (VSS) Input (+) |
| 59 | — | Not Used |
| 60 | 74 (GY/LB) | Right Front Heated Oxygen Sensor (HO2S) Input |
| 61 | 393 (P/LG) | Left Rear Heated Oxygen Sensor (HO2S) Input |
| 62 | — | Not Used |
| 63 | — | Not Used |
| 64 | 199 (LB/Y) | Manual Lever Position Sensor Input |
| 65 | 352 (BR/LG) | Delta Pressure Feedback EGR Sensor Input |
| 66 | 209 (W/P) | Data Link Connector (DIC) |
| 67 | 101 (GY/Y) | Canister Purge Solenoid Output |
| 68 | — | Not Used |
| 69 | 331 (PK/Y) | A/C WOT Cutout Relay Output |
| 70 | — | Not Used |
| 71 | 361 (R) | Power (VPWR) |
| 72 | — | Not Used |
| 73 | 559 (T/BK) | Fuel Injector #5 Output |
| 74 | 557 (BR/Y) | Fuel Injector #3 Output |
| 75 | 555 (T) | Fuel Injector #1 Output |
| 76 | 570 (BK/W) | Power Ground |
| 77 | 570 (BK/W) | Power Ground |
| 78 | — | Not Used |
| 79 | 911 (W/LG) | Transmission Control Indicator Lamp Output |
| 80 | 926 (LB/O) | Fuel Pump Relay Output |
| 81 | 925 (W/Y) | Electronic Pressure Control Output |
| 82 | 125 (DB/W) | Transmission Converter Clutch Solenoid Output |
| 83 | 264 (W/LB) | Idle Air Control (IAC) Valve Output |
| 84 | 970 (DG/W) | Transmission Speed Sensor Input |
| 85 | 282 (DB/O) | Cylinder Identification (CID) Sensor Input |
| 86 | 439 (T/LG) | A/C Head Pressure Switch Input |
| 87 | 94 (R/BK) | Left Front Heated Oxygen Sensor (HO2S) Input |
| 88 | 967 (LB/R) | Mass Air Flow (MAF) Sensor Input |
| 89 | 355 (GY/R) | Throttle Position Sensor Input |
| 90 | 351 (BR/W) | Reference Voltage |
| 91 | 359 (GY/R) | Signal Return |
| 92 | 511 (LG) | Brake Switch Input |
| 93 | 387 (R/W) | Right Front Heated Oxygen Sensor (HO2S) Output |
| 94 | 388 (Y/LB) | Left Front Heated Oxygen Sensor (HO2S) Output |
| 95 | 389 (W/BK) | Right Rear Heated Oxygen Sensor (HO2S) Output |
| 96 | 390 (T/Y) | Left Rear Heated Oxygen Sensor (HO2S) Output |
| 97 | 361(R) | Power (VPWR) |
| 98 | 228 (DB) | Low Fan Control Output |
| 99 | 560 (LG/O) | Fuel Injector #6 Output |
| 100 | 558 (BR/LB) | Fuel Injector #4 Output |
| 101 | 556 (W) | Fuel Injector #2 Output |
| 102 | — | Not Used |
| 103 | 570 (BK/W) | Power Ground |
| 104 | — | Not Used |
| Pin Number | Circuit | Circuit Function |
|---|---|---|
| 1 | 37 (Y) | Keep Alive Power |
| 2 | 511 (LG) | Brake ON/OFF Input (Automatic Only) |
| 3 | 679 (GY/BK) | Vehicle Speed Sensor (VSS) Input (+) |
| 4 | 648 (W/PK) | Ignition Diagnostic Monitor |
| 5 | 970 (DG/W) | Transmission Speed Sensor (TSS) (Automatic Only) |
| 6 | 676 (PK/O) | Vehicle Speed Sensor (VSS) Ground (-) |
| 7 | 354 LG/R) | Engine Coolant Temperature |
| 8 | 238 (DG/Y) | Fuel Pump Monitor |
| 9 | 968 (T/LB) | Mass Air Flow (MAF) Sensor Return |
| 10 | 198 (DG/O) | A/C Clutch Signal (ACCS) |
| 11 | 101 (GY/Y) | Canister Purge (CANP) Solenoid Output |
| 12 | 560 (LG/O) | Fuel Injector #6 Output |
| 13 | 561 (T/R) | Fuel Injector #7 Output |
| 14 | 562 (LB) | Fuel Injector #8 Output |
| 15 | 559 (T/BK) | Fuel Injector #5 Output |
| 16 | 259 (O/R) | Ignition Control Module (ICM) Ground |
| 17 | 658 (PK/LG) | Self-Test Output/Malfunction Indicator Light |
| 18 | 914 (T/O) | Data (+) |
| 19 | 915 (PK/LB) | Data (-) |
| 20 | 57 (BK) | Case Ground |
| 21 | 264 (W/LB) | Idle Air Control (IAC) Solenoid Output |
| 22 | 926 (LB/O) | Fuel Pump Output |
| 23 | — | Not Used |
| 24 | — | Not Used |
| 25 | 743 (GY) | Intake Air Temperature (IAT) Sensor |
| 26 | 351 (BR/W) | Reference Voltage (VREF) |
| 27 | 352 (BR/LG) | EGR Valve Position Sensor |
| 28 | — | Not Used |
| 29 | — | Not Used |
| 30 | 199 (LB/Y) | Manual Lever Position Sensor (Automatic Only) |
| 31 | 190 (W/O) | Secondary Air Injection Bypass (AIRB) Solenoid |
| 32 | 639 (LG/P) | High Fan Control |
| 33 | 360 (BR/PK) | EGR Vacuum Regulator (EVR) Solenoid |
| 34 | 200 (BR) | Secondary Air Injection Diverter (AIRD) Solenoid |
| 35 | 558 (BR/LB) | Fuel Injector #4 Output |
| 36 | 929 (PK) | Spark Output (SPOUT) |
| 37 | 361 (R) | Vehicle Power |
| 38 | 925 (W/Y) | Electronic Pressure Control Output |
| 39 | 557 (BR/Y) | Fuel Injector #3 Output |
| 40 | 570 (BK/W) | Ground |
| 41 | 224 (T/W) | Transmission Control Switch (TCS) (Automatic Only) |
| 42 | 883 (PK/LB) | A/C High Pressure Switch |
| 43 | 94 (R/BK) | Left Heated Oxygen Sensor (HO2S) |
| 44 | 74 (GY/LB) | Right Heated Oxygen Sensor (HO2S) |
| 45 | — | Not Used |
| 46 | 359 (GY/R) | Sensor Signal Return (SIG RTN) |
| 47 | 355 (GY/W) | Throttle Position (TP) Sensor Feed |
| 48 | 209 (W/P) | Self-Test Input (STI) |
| 49 | 923 O/BK) | Transmission Oil Temperature Sensor (Automatic Only) |
| 50 | 967 (LB/R) | Mass Air Flow (MAF) Sensor |
| 51 | 237 (O/Y) | Shift Solenoid #1 (Automatic Only) |
| 52 | 315 (P/O) | Shift Solenoid #2 (Automatic Only) |
| 53 | 924 (BR/O) | Torque Converter Clutch (Automatic Only) |
| 54 | 331 (PK/Y) | Wide Open Throttle (WOC) A/C Cutoff (WAC) |
| 55 | 228 (DB) | Low Fan Control |
| 56 | 395 (GY/O) | Profile Ignition Pickup (PIP) |
| 57 | 361 (R) | Vehicle Power |
| 58 | 555 (T) | Fuel Injector #1 Output |
| 59 | 556 (W) | Fuel Injector #2 Output |
| 60 | 570 (BK/W) | Ground |
| Pin Number | Circuit | Circuit Function |
|---|---|---|
| 1 | 229 (R/O) | Cooling Fan Motor (LOW) Output |
| 2 | 229 (R/O) | Cooling Fan Motor (LOW) Output |
| 3 | 38 (BK/O) | BATT (+) (Cooling Fan Control Relays) |
| 4 | 38 (BK/O) | BATT (+) (Cooling Fan Control Relays) |
| 5 | 238 (DG/Y) | Power To Fuel Pump |
| 6 | 638 (O/LB) | Cooling Fan Motor (HIGH) Output |
| 7 | 638 (O/LB) | Cooling Fan Motor (HIGH) Output |
| 8 | 37 (Y) | BATT (+) (To PCM Power Relay) |
| 9 | — | Not Used |
| 10 | 37 (Y) | BATT (+) (To PCM Power Relay) |
| 11 | 37 (Y) | BATT (+) (To Fuel Pump Relay) |
| 12 | 361 (R) | PCM Power |
| 13 | 16 (R/LG) | Start or Run Power |
| 14 | 228 (DB) | Low Fan Control Input |
| 15 | 570 (BK/W) | Ground |
| 16 | 57 (BK) | A/C Clutch Coil Ground |
| 17 | 639 (LG/P) | High Speed Fan from PCM |
| 18 | 926 (LB/O) | Fuel Pump Relay Input |
| 19 | — | Not Used |
| 20 | — | Not Used |
| 21 | 198 (DG/O) | A/C High Pressure Cutout/FAS Switch |
| 22 | 331 (PK/Y) | A/C WOT Cutout Relay Input |
| 23 | 347 (BK/Y) | A/C Clutch Coil Control |
| 24 | 361 (R) | PCM Power |
