LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2008 >> Optra LS, Automatic >> Repair and Diagnosis (Single Page) >> Quick Lookups >> Electrical Component Locations >> Wiring Systems And Power Management - Door, Luggage Compartment. Underbody & Electrical Center Component Views, & Component Connector End Views >> Component Connector End Views >> Engine Control Module (ECM) X2 (MR-140) (LDA)
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Engine Control Module (ECM) X2 (MR-140) (LDA)

Fig 1: Engine Control Module (ECM) X2 Connector End View
GM1501851Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2 Connector Terminal Identification (MR-140) (LDA)

Pin Wire Circuit Function
1 0.5 L-BU 406 Ignition Coil (IC) Timing Control 1 and 4
2 0.5 BN/BK 1671 Heated Oxygen Sensor (HO2S) 2 Heater Control
3 0.5 GY 120 Fuel Pump Supply Voltage
4 0.5 WH 428 Evaporative Emissions (EVAP) Canister Purge Solenoid Control
5 0.5 YE/BK 1868 Low Reference
6 0.5 GY (D-BU) 417 Throttle Position (TP) Sensor Signal
7 0.5 GY (BN) 472 Intake Air Temperature (IAT) Sensor Signal
8 0.5 D-BU/WH (L-GN) 432 Manifold Absolute Pressure (MAP) Sensor Signal
9 0.5 WH/BK 1456 Exhaust Gas Recirculation (EGR) Valve Position Signal
10 - - Not Used
11 0.5 D-GN/WH (L-BU/BK) 844 Fuel Injector 4 Control
12 GY 1653 Heated Oxygen Sensor (HO2S) 1 Signal
13 0.5 BN 1747 Idle Air Control (IAC) A High Control
14 0.5 WH 444 Idle Air Control (IAC) B Low Control
15 0.5 YE/WH 1748 Idle Air Control (IAC) A Low Control
16 0.5 L-BU/BK 1688 5-Volt Reference
17 - - Not Used
18 0.5 YE/BK 496 Knock Sensor Signal
19 0.5 D-GN 435 Exhaust Gas Recirculation (EGR) Solenoid Low Control
20 - - Not Used
21 0.5 D-BU/WH 1869 Crankshaft Position (CKP) Sensor Signal
22 0.5 BN/WH (L-GN/BK) 1745 Fuel Injector 2 Control
23 - - Not Used
24 0.5 D-GN/BK (PK/BK) 1746 Fuel Injector 3 Control
25 0.5 YE/D-BU (BK) 1744 Fuel Injector 1 Control
26 0.5 PU (BN/WH) 633 Camshaft Position (CMP) Sensor Signal
27 - - Not Used
28 0.5 L-GN (YE) 410 Engine Coolant Temperature (ECT) Sensor Signal
29 D-GN/RD 1665 Heated Oxygen Sensor (HO2S) 1 Low Reference
30 0.5 PU/WH 1749 Idle Air Control (IAC) Coil B High Control
31 - - Not Used
32 0.5 D-GN/WH (D-GN/YE) 416 5-Volt Reference
33 0.5 L-BU 406 Ignition Coil (IC) Timing Control (1 and 4)
34 - - Not Used
35 0.5 D-GN/WH 423 Ignition Coil (IC) Timing Control (2 and 3)
36 - - Not Used
37 0.5 BK/WH 51 Ground
38 0.5 BK/WH 51 Ground
39 0.5 BK/WH 51 Ground
40 0.5 BK/WH 51 Ground
41 0.5 BK/WH 51 Ground
42-47 - - Not Used
48 0.5 OG/BK 469 Low Reference
49-50 - - Not Used
51 0.5 D-GN/WH 423 Ignition Coil (IC) Timing Control (2 and 3)
52 0.5 D-GN 435 Exhaust Gas Recirculation (EGR) Low Control
53-63 - - Not Used
64 0.5 BK (BK/YE) 808 Low Reference
Connector Part Information 
  • OEM: AMP 1-368434-1
  • Description: 64-Way F ECU 64P Conn Ass'y (32-bit-B)
scientia non olet · About LEMON Manuals