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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) C (L34)
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Engine Control Module (ECM) C (L34)

Fig 1: Engine Control Module (ECM) C Connector End View
GM1501851Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) C Connector Terminal Identification (L34)

Pin Wire Circuit Function
1 0.5 BN/BK 543 5-Volt Reference
2 0.5 GY 605 5-Volt Reference
3 0.5 PU 1550 Low Reference
4 0.5 L-GN 413 Low Reference
5 0.5 PU/WH 632 Low Reference
6 0.5 BN 488 5-Volt Reference
7-8 - - Not Used
9 0.5 L-BU 1450 Low Reference
10-11 - - Not Used
12 0.5 PK/BK 1846 Ignition 1 Voltage
13 0.5 PK/BK 1846 Ignition 1 Voltage
14 - - Not Used
15 0.5 BN/WH 379 CPP Switch Signal (M/T)
16 - - Not Used
17 0.5 OG 440 Battery Positive Voltage
18 0.5 OG 440 Battery Positive Voltage
19 0.5 BK/WH 51 Ground
20 0.5 BK/WH 51 Ground
21 0.5 BK/WH 51 Ground
22 0.5 BK/WH 51 Ground
23-24 - - Not Used
25 D-GN/WH 762 A/C Request Signal
26 L-BU 20 Stop Lamp Switch Output
27 - - Not Used
28 BN 17 Stop Lamp Switch Output
29 0.5 WH 791 APP Sensor 2 Signal
30 L-BU 380 A/C Pressure Sensor Signal
31 0.5 PU 2000 Serial Data
32 - - Not Used
33 0.5 PK/D-BU 539 Ignition 1 Voltage
34 0.5 BK/WH 51 Ground
35 D-GN 67 A/C Clutch Relay Control
36 0.5 BK 441 Main Relay Control
37 WH 183 Cruise Indicator Control
38 D-GN/WH 817 Vehicle Speed Signal (M/T)
39-40 - - Not Used
41 0.5 GY 121 Engine Speed Signal
42 0.5 L-GN 465 Fuel Pump Relay Control
43 0.5 GY 1936 Fuel Level Sensor Signal
44 0.5 D-BU 790 APP Sensor 1 Signal
45 0.5 D-BU/WH 397 Cruise Control Switch Signal
46 0.5 PU 1807 CAN Serial Data High
47 0.5 YE/D-GN 890 Fuel Tank Pressure Sensor Signal
48 0.5 D-GN 602 Rough Road Sensor Signal w/o ABS
49 0.5 BN/WH 419 MIL Control
50 D-GN/WH 355 Low Speed Cooling Fan Relay Control
51-55 - - Not Used
56 D-GN 135 Engine Coolant Temperature Gauge Control
57 0.5 BN/BK 1671 Heated Oxygen Sensor (HO2S) 2 Heater Control
58-60 - - Not Used
61 0.5 WH 30 Fuel Gauge Control
62 0.5 PU 1670 Heated Oxygen Sensor (HO2S) 2 Signal
63 0.5 YE 710 CAN Serial Data Low
64 D-BU 876 Rough Road Signal w/ABS
Connector Part Information 
  • OEM: AMP 0-368434-1
  • Description: 64-Way F ECU 64P Conn Assembly (32-bit-B) (BK)