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HOMESERVICE MANUALSSATURN2009ASTRA XR, 4D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSWIRING SYSTEMS AND POWER MANAGEMENT - ELECTRICAL CENTER VIEWS & COMPONENT AND HARNESS CONNECTOR END VIEWSCOMPONENT CONNECTOR END VIEWSENGINE CONTROL MODULE (ECM) X2
2009 Saturn Astra XR, 4D Hatchback, Automatic

Engine Control Module (ECM) X2

2009 Saturn Astra XR, 4D Hatchback, AutomaticSECTION Engine Control Module (ECM) X2
Fig 1: Engine Control Module (ECM) X2 Connector End View
GM2100132Courtesy of GENERAL MOTORS CORP.
Engine Control Module (ECM) X2

Pin Wire Color Circuit No. Function
1 0.5 BK 998 MIL Control
2-5 - - Not Used
6 0.5 GN 2501 High Speed GMLAN Serial Data (-)
7-9 - - Not Used
10 0.5 RD/WH 335 Low Speed Cooling Fan Relay Control
11 - - Not Used
12 0.5 BN/PU 1 Brake Booster Pump Relay Control
13-15 - - Not Used
16 0.5 BK/YE 379 Cruise Control Clutch Pedal Position Switch Signal
17-22 - - Not Used
23 0.5 BK/WH 2700 5 Volt Reference 1
24 0.5 BK/WH 1164 5 Volt Reference 1
25 0.5 BK/WH 1274 5 Volt Reference 2
26 0.5 BN 1271 Low Reference
27 0.5 BN 1272 Low Reference
28-29 - - Not Used
30 0.5 BN/BU 5514 Low Reference
31 0.75 RD 5290 Ignition Voltage
32 0.5 RD 3540 Battery Positive Voltage
33-34 - - Not Used
35 0.5 BN/BU 6014 Low Reference
36 0.5 BN/VT 61 Low Reference
37 - - Not Used
38 0.5 BU 2500 High Speed GMLAN Serial Data (+)
39 0.5 BN/BU 251 Low Reference
40-41 - - Not Used
42 0.5 BU/YE 890 Fuel Tank Pressure Sensor Signal
43 0.5 BN/GN 636 Outside Ambient Air Temperature Sensor Signal
44 0.5 BU 5266 Ambient Air Pressure Sensor Signal
45 0.5 BK/YE 848 Brake Switch Signal
46 0.5 BN/YE 2759 Low Reference
47 0.75 RD 5290 Ignition Voltage
48 0.5 BN/VT 1 Brake Booster Vacuum Pump Control
49 0.5 BN/GN 465 Fuel Pump Primary Relay Control
50-51 - - Not Used
52 0.5 BU/WH 225 Generator Turn On Signal
53 0.5 BK/YE 1162 Accelerator Pedal Position Signal 2
54 0.5 BK/YE 1161 Accelerator Pedal Position Signal 1
55 0.5 GN/BU 30 Fuel Level Sensor Signal
56 0.5 YE/RD 203 A/C High Pressure Switch Signal
57 0.5 BK/YE 340 Stop Lamp Switch Signal
58 0.5 BN 2350 EVAP Canister Vent Solenoid Control
59 0.5 RD/WH 473 High Speed Cooling Fan Relay Control
60 0.5 BU/BK 1039 ECM Starter Control
61 0.5 RD/WH 5267 Turbo Cooling Fan Relay Control
62 0.5 BN/YE 5069 Engine Main Relay Coil Control
63 - - Not Used
64 0.5 BK 39 Run/Crank Ignition 1 Voltage
Connector Part Information 
  • OEM: ZFW64-8
  • Service: Service by Harness - See Part Catalog
  • Description: 64-Way F Sealed (GY)
Terminal Part Information 
  • Terminal/Tray: Service by Harness - See Part Catalog
  • Release Tool/Test Probe: N/A
RENDER: 1.0x

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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.