Engine Control Module Connector End Views. Chevrolet Joy 2008

For 1990-2009 cars

Connector 1: | Engine Control Module (ECM)

### Engine Control Module (ECM)

#### Connector Part Information

- OEM: FC1
- Service: N/A
- Description: 90-Way F (BK)

#### Engine Control Module (ECM)

Pin | Wire | Circuit | Function
--- | --- | --- | ---
1 | BN | 1158 | Ignition Coil 3 Control
2 | -- | -- | Not Used
3 | BK | 750 | Ground
4 | D-GN/WH | 428 | EVAP Canister Purge Valve Solenoid Control
5 | D-BU | 473 | High Speed Cooling Fan Control
6 | WH | 257 | Exhaust Gas Recirculation (EGR) Valve Control
7 | OG/BK | 1029 | Main Relay Control
8 | WH | 121 | Tachometer Signal
9 | -- | -- | Not Used
10 | D-GN/WH | 465 | Fuel Pump Relay Control
11 | -- | -- | Not Used
12 | GY/BK | 720 | Low Reference
13 | D-GN/PK | 412 | Oxygen (O2) Sensor Signal
14 | GY/YE | 596 | Fuel Sender Signal
15 | BN/D-BU | 718 | Low Reference
16 | PU/D-GN | 1980 | Heated Oxygen Sensor (HO2S) 2 Signal
17 | -- | -- | Not Used
18 | PK/BK | 632 | Low Reference
19 | BK/WH | 951 | Knock Sensor (KS) Shield Ground
20 | -- | -- | Not Used
21 | BN/D-GN | 437 | Vehicle Speed Signal
22 | -- | -- | Not Used
23 | D-GN/WH | 762 | A/C Request Signal
24 | YE/BK | 1868 | Crankshaft Position (CKP) Sensor Signal HIGH
25 | OG/BK | 495 | Power Steering Pressure Switch Signal
26 | -- | -- | Not Used
27 | WH | 2148 | Transmission Control Module (TCM) (Automatic Transmission)
28 | BK | 750 | Ground
29 | PK/RD | 339 | Ignition Voltage
30 | RD/BK | 1240 | Battery Positive Voltage
31 | L-BU | 1153 | Ignition Coil 1 Control
32 | PK | 1155 | Ignition Coil 2 Control
33 | BK | 750 | Ground
34 | -- | -- | Not Used
35 | D-GN | 676 | Heated Oxygen Sensor (HO2S) Heater Control
36 | D-GN/WH | 135 | Temperature Signal
37 | -- | -- | Not Used
38 | D-GN/WH | 459 | A/C Compressor Relay Control
39 | D-GN | 335 | Cooling Fan Relay LOW Control
40-41 | -- | -- | Not Used
42 | L-GN/BK | 444 | Idle Air Control (IAC) Coil B Low Control
43 | BN | 1456 | Exhaust Gas Recirculation (EGR) Valve Position Signal
44 | D-BU | 417 | Throttle Position (TP) Sensor Signal
45 | YE | 410 | Engine Coolant Temperature (ECT) Sensor Signal
46 | D-BU | 732 | Evaporative Temperature Sensor Signal
47 | BN | 472 | Intake Air Temperature (IAT) Sensor Signal
48 | YE | 2643 | Octane Selection Connector Signal (With Octane Switch)
BK | 750 | Ground (w/o Octane Switch)
49 | D-GN/YE | 2642 | Octane Selection Connector Signal
50 | YE/BK | 457 | Knock Sensor (KS) Signal
51-52 | -- | -- | Not Used
53 | BK/WH | 1451 | Crankshaft Position (CKP) Sensor Shield Ground
54 | D-BU/WH | 1869 | Crankshaft Position (CKP) Sensor Signal LOW
55 | D-GN | 872 | Rough Road Sensor
56 | PU | 1319 | Serial Data
57 | GY/BK | 2149 | Transmission Control Module (TCM) (Automatic Transmission)
58 | L-BU/BK | 1745 | Fuel Injector 2 Control
59-62 | -- | -- | Not Used
63 | BK | 750 | Ground
64 | PU | 30 | Fuel Gage Sensor Signal
65 | D-BU/WH | 1677 | Heated Oxygen Sensor (HO2S) 1 Signal
66 | OG/BK | 1733 | Ignition 1 Voltage
67 | BK | 750 | Ground
68 | BN/WH | 419 | Malfunction Indicator Lamp (MIL) Control
69 | -- | -- | Not Used
70 | L-BU | 1748 | Idle Air Control (IAC) Coil A Low Control
71 | L-BU/WH | 1747 | Idle Air Control (IAC) Coil A High Control
72 | L-GN/WH | 1749 | Idle Air Control (IAC) Coil B High Control
73 | L-GN | 432 | Manifold Absolute Pressure (MAP) Sensor Signal
74 | GY | 416 | 5-Volt Reference
75 | BN | 808 | Low Reference
76 | GY/D-BU | 1981 | Heated Oxygen Sensor (HO2S) 2 Low Reference
77 | BN | 413 | Low Reference
78 | GY | 474 | 5-Volt Reference
79 | PU | 719 | Low Reference
80 | D-BU | 496 | Knock Sensor Signal
81 | -- | -- | Not Used
82 | BN/WH | 633 | Camshaft Position (CMP) Sensor Signal
83 | GY | 2702 | 5-Volt Reference
84 | BN/WH | 312 | Headlamp Signal
85 | BN | 833 | Rough Road Sensor
86-88 | -- | -- | Not Used
89 | PK/BK | 1746 | Fuel Injector 3 Control
90 | BN | 1744 | Fuel Injector 1 Control