2004 Chevrolet Aveo Base, 4D HatchbackFACTORY OEM SERVICE PROCEDURE

Engine Control Module (ECM) Connectors

Engine Control Module (ECM) - K

GM1466972Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • AMP 1-368434-1
  • 64-Way F ECU 64P Conn Assembly (32-bit-B) (BN)
Pin Wire Color Circuit No. Function
K1 OG 440 Battery Positive Voltage
K2-K4 - - Not Used
K5 GY 892 Octane Selection Signal
K6 D-GN 817 Vehicle Speed Signal (Manual Transmission)
K7 D-GN 834 Rough Road Signal - w/ABS
K8-K11 - - Not Used
K12 GY 473 High Speed Cooling Fan Relay Control
K13 YE 492 Intake Manifold Tuning Valve (IMTV) Control
K14 PU 1807 CAN Serial Data High
K15 YE 710 CAN Serial Data Low
K16 BN 50 Heated Oxygen Sensor (HO2S) 1 Heater Control
K17 OG 440 Battery Positive Voltage
K18 PK 1739 Ignition 1 Voltage
K19-K20 - - Not Used
K21 D-GN 602 Rough Road Sensor Signal - w/o ABS
K22 L-BU 203 A/C Pressure Sensor Signal
K23 - - Not Used
K24 WH 135 Engine Coolant Temperature Gage Control
K25 GY 121 Engine Speed Signal
K26-K27 - - Not Used
K28 GY 335 Low Speed Cooling Fan Relay Control
K29 D-GN 67 A/C Clutch Relay Control
K30 WH 30 Fuel Gage Control
K31 - - Not Used
K32 BK/WH 2051 Keyword Serial Data
K33 - - Not Used
K34 L-BU 1937 Low Reference
K35 D-GN/WH 762 A/C Request Signal
K36 L-GN 413 Heated Oxygen Sensor (HO2S) 2 Signal
K37-K47 - - Not Used
K48 YE 1578 EVAP Canister Vent Solenoid Control
K49 - - Not Used
K50 WH/PK 1031 5-Volt Reference
K51 GY 1936 Fuel Level Sensor Signal
K52 L-BU 1030 Fuel Tank Pressure Sensor Signal
K53 D-GN/BK 1670 Heated Oxygen Sensor (HO2S) 2 Low Reference
K54 YE/D-BU 497 Fuel Pump Relay Control
K55-K63 - - Not Used
K64 BN 419 Malfunction Indicator Lamp (MIL) Control
Engine Control Module (ECM) - M

GM1481262Courtesy of GENERAL MOTORS CORP.
Connector Part Information
  • AMP 1-368434-1
  • 64-Way F ECU 64P Conn Assembly (32-bit-B) (BK)
Pin Wire Color Circuit No. Function
M1 D-GN/WH 423 Ignition Coil 2 and 3 Control
M2 BN 1671 Heated Oxygen Sensor (HO2S) 2 Heater Control
M3 BN 1733 Ignition 1 Voltage
M4 WH 452 EVAP Canister Purge Valve Solenoid Control
M5 YE/BK 1868 Low Reference
M6 WH 425 Throttle Position (TP) Sensor Signal
M7 L-BU 468 Intake Air Temperature (IAT) Sensor Signal
M8 L-BU 432 Manifold Absolute Pressure (MAP) Sensor Signal
M9 D-GN 435 Exhaust Gas Recirculation (EGR) Valve Position Sensor Signal
M10 - - Not Used
M11 YE 1744 Fuel Injector 4 Control
M12 WH 428 Heated Oxygen Sensor (HO2S) 1 Signal
M13 L-GN 534 Idle Air Control (IAC) A High Control
M14 D-GN 415 Idle Air Control (IAC) B Low Control
M15 WH/D-BU 533 Idle Air Control (IAC) A Low Control
M16 L-BU 469 5-Volt Reference
M17 - - Not Used
M18 YE/BK 496 Knock Sensor (KS) Signal
M19 D-BU 436 Exhaust Gas Recirculation (EGR) Valve Control
M20 - - Not Used
M21 D-BU/WH 1869 Crankshaft Position (CKP) Sensor Signal
M22 L-GN 1746 Fuel Injector 2 Control
M23 - - Not Used
M24 BN/WH 1745 Fuel Injector 3 Control
M25 BN/BK 1747 Fuel Injector 1 Control
M26 L-BU/BK 1748 Camshaft Position (CMP) Sensor Signal
M27 - - Not Used
M28 L-GN 410 Engine Coolant Temperature (ECT) Sensor Signal
M29 D-BU/BK 429 Heated Oxygen Sensor (HO2S) 1 Low Reference
M30 L-GN 417 Idle Air Control (IAC) B High Control
M31 - - Not Used
M32 PU 427 5-Volt Reference
M33 OG 423 Ignition Coil 2 and 3 Control
M34 - - Not Used
M35 L-BU 406 Ignition Coil 1 and 4 Control
M36 - - Not Used
M37 BK/WH 51 Ground
M38 BK/WH 51 Ground
M39 BK/WH 51 Ground
M40 BK/WH 51 Ground
M41 BK/WH 51 Ground
M42-M47 - - Not Used
M48 BN 732 Low Reference
M49-M50 - - Not Used
M51 L-BU 406 Ignition Coil 1 and 4 Control
M52 D-BU 436 Exhaust Gas Recirculation (EGR) Valve Control
M53-M63 - - Not Used
M64 D-BU/WH 1876 Low Reference
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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