For 1990-2009 cars

#### Engine Control Module Connector End View

Connector Part Information | Engine Control Module Connector
--- | ---
Pin | Wire Color | Circuit No. | Function
1 | BRN/WHT | -- | HO2S Heater Control (Rear)
2 | BRN/BLU | -- | IAC Valve Control (Close)
3 | BRN/YEL | -- | Fuel Injector 1 Control
4 | BRN/BLU | -- | Fuel Injector 3 Control
5 | BRN/BLK | -- | Fuel Injector 5 Control
6 | BLK | -- | ECM Ground
7 | BRN/GRN | -- | Intake Resonance Switchover Solenoid Valve Control
8 | BRN/BLU | -- | Malfunction Indicator Lamp (MIL) Control
9- 11 | -- | -- | Not Used
12 | BLK/BLU | -- | AC Load Signal
13-14 | -- | -- | Not Used
15 | BLK/WHT | -- | AC Request Signal
16 | BLU/RED | -- | IAT Sensor Signal
17 | BLU/GRN | -- | MAF Sensor Signal
18 | BRN/BLU | -- | HO2S Signal B2S1
19 | BRN/BLU | -- | HO2S Signal B1S1
20 | GRY/RED | -- | CKP Sensor Ground
21 | BRN/GRN | -- | Transmission Torque Reduction Request Circuit
22-25 | -- | -- | Not Used
26 | RED/BRN | -- | Battery Voltage
27 | BRN/GRY | -- | Engine Controls Power Relay Control
28 | BLK | -- | ECM Ground
29 | BRN/RED | -- | IAC Valve Control (Open)
30 | BRN/WHT | -- | HO2S Heater Control (Front)
31 | BRN/GRN | -- | Fuel Injector 2 Control
32 | BRN/RED | -- | Fuel Injector 4 Control
33 | BRN/PPL | -- | Fuel Injector 6 Control
34 | BLK | -- | ECM Ground
35 | BRN/GRN | -- | Intake Plenum Switchover Solenoid
36 | BRN/PPL | -- | AC Relay Control
37 | WHT | -- | AIR Pump Relay Control
38 | GRY/RED/BLK | -- | CMP Sensor Signal
39 | RED/BLK | -- | MIL Request
40 | BRN/WHT | -- | Knock Sensor (KS) B2
41-43 | -- | -- | Not Used
44 | BRN/BLU | -- | Throttle Position (TP) Sensor Signal
45 | BRN/LT GRN | -- | Mass Air Flow (MAF) Sensor Signal Return
46 | BRN/GRN | -- | HO2S Ground
47 | -- | -- | Not Used
48 | GRY | -- | Traction Control Torque Reduction Request
49 | GRY/BLK | -- | Ignition Control (IC) 1-4
50 | BLK/YEL | -- | Ignition Control (IC) 2-5
51 | BLK/RED | -- | Ignition Control (IC) 3-6
52 | -- | -- | Not Used
53 | BLU/BLK | -- | 5 Volt Reference
54 | RED/BLU | -- | Switched Battery Voltage
55 | BLK | -- | ECM Ground
56 | BRN | -- | ECM Ignition Feed
57-60 | -- | -- | Not Used
61 | BRN/RED | -- | EVAP Canister Purge Valve Control
62 | PPL | -- | AIR Cut-Off Solenoid Valve Control
63 | BRN | -- | Fuel Pump Relay Control
64 | -- | -- | Not Used
65 | BRN/BLK | -- | EVAP Canister Vent Valve Control
66-67 | -- | -- | Not Used
68 | -- | -- | Traction Control Input/PWM Interface
69 | BLK/RED | -- | P/N Signal
70 | BRN/WHT | -- | Knock Sensor (KS) B1
71 | BLU/GRN | -- | 5 V Reference Ground
72 | BRN/YEL | -- | EVAP Fuel Tank Pressure Sensor Signal
73 | BLU/BLK | -- | EVAP Fuel Tank Level Sensor Signal
74 | BRN/BLU | -- | Engine Coolant Temperature (ECT) Sensor Signal
75 | -- | -- | Not Used
76 | BRN/BLU | -- | HO2S Signal B2 S2
77 | BRN/BLU | -- | HO2S Signal B1 S2
78 | GRN/WHT | -- | CKP Sensor Signal
79 | BLU/RED | -- | Vehicle Speed/Theft Deterrent Signal
80 | GRN | -- | Engine Speed Output
81 | -- | -- | Not Used
82 | BRN/YEL | -- | ECM Data Output
83 | GRY | -- | Engine Torque Output
84-87 | -- | -- | Not Used
88 | BRN/WHT | -- | Serial Data
For more detailed information, refer to Engine Scan Tool Data List .