K20 Engine Control Module X2
WARNING: This page is about a different car, the 2021 Buick Enclave. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type: Engine
- OEM Connector: 34566-0103
- Service Connector: 19333090
- Description: 73-Way F 0.64, 2.8 Series, Sealed (BK with BK Terminal Position Assurance)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
13587518 |
J-35616-35 (VT) |
J-38125-11A |
| II |
19354746 |
J-35616-64B (LT BU) |
J-38125-215A |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 |
0.5 |
GY / WH |
3122 |
HO2S Heater Low Control Bank 1 Sensor 2 |
II |
- |
| 2 |
0.5 |
WH / BN |
3223 |
HO2S Heater Low Control Bank 2 Sensor 2 |
II |
LFY |
| 3 - 6 |
- |
- |
- |
Not Occupied |
- |
- |
| 7 |
0.5 |
GN / VT |
4621 |
Engine Control Module LIN Bus 1 |
II |
LFY |
| 8 |
- |
- |
- |
Not Occupied |
- |
- |
| 9 |
0.5 |
BN / GN |
1174 |
Oil Level Switch Signal |
II |
LFY |
| 10 |
- |
- |
- |
Not Occupied |
- |
- |
| 11 |
0.5 |
YE / BN |
331 |
Oil Pressure Sensor Signal |
II |
LFY |
| 12 |
0.5 |
BK / BN |
2761 |
Coolant Temperature Sensor Low Reference |
II |
LFY |
| 13 - 16 |
- |
- |
- |
Not Occupied |
- |
- |
| 17 |
0.5 |
GY / WH |
3113 |
HO2S Heater Low Control Bank 1 Sensor 1 |
II |
LFY |
| 18 |
0.5 |
GN / YE |
3212 |
HO2S Heater Low Control Bank 2 Sensor 1 |
II |
LFY |
| 19 - 27 |
- |
- |
- |
Not Occupied |
- |
- |
| 28 |
0.5 |
VT / BU |
5294 |
Powertrain Main Relay Fused Supply Voltage 5 |
II |
LFY |
| 29 - 34 |
- |
- |
- |
Not Occupied |
- |
- |
| 35 |
0.5 |
WH / BK |
3111 |
HO2S Low Signal Bank 1 Sensor 1 |
II |
LFY |
| 36 |
0.5 |
YE / WH |
3211 |
HO2S Low Signal Bank 2 Sensor 1 |
II |
LFY |
| 37 |
0.5 |
WH / YE |
3121 |
HO2S Low Signal Bank 1 Sensor 2 |
II |
- |
| 38 |
0.5 |
YE / BU |
3221 |
HO2S Low Signal Bank 2 Sensor 2 |
II |
LFY |
| 39 |
0.5 |
BK / YE |
1716 |
Knock Sensor Low Reference 1 |
II |
LFY |
| 40 |
0.5 |
BK / GY |
2303 |
Knock Sensor Low Reference 2 |
II |
LFY |
| 41 |
- |
- |
- |
Not Occupied |
- |
- |
| 42 |
0.5 |
YE / WH |
3200 |
Throttle Inlet Absolute Pressure Sensor Signal |
II |
LFY |
| 43 |
0.5 |
WH / RD |
3201 |
Throttle Inlet Absolute Pressure Sensor 5V Reference |
II |
LFY |
| 44 - 46 |
- |
- |
- |
Not Occupied |
- |
- |
| 47 |
0.5 |
GY / RD |
2704 |
Manifold Absolute Pressure Sensor 5V Reference |
II |
LFY |
| 48 |
0.5 |
BK / GN |
469 |
Manifold Absolute Pressure Sensor Low Reference |
II |
LFY |
| 49 - 50 |
- |
- |
- |
Not Occupied |
- |
- |
| 51 |
0.5 |
BK / GY |
3927 |
Transmission Internal Mode Switch Feedback Signal |
II |
LFY+M3V |
| 52 |
0.5 |
BN / WH |
582 |
Throttle Actuator Close Control |
II |
LFY |
| 53 - 54 |
- |
- |
- |
Not Occupied |
- |
- |
| 55 |
0.5 |
VT / GY |
3110 |
HO2S High Signal Bank 1 Sensor 1 |
II |
LFY |
| 56 |
0.5 |
VT / WH |
3210 |
HO2S High Signal Bank 2 Sensor 1 |
II |
LFY |
| 57 |
0.5 |
VT / BU |
3120 |
HO2S High Signal Bank 1 Sensor 2 |
II |
- |
| 58 |
0.5 |
VT / GN |
3220 |
HO2S High Signal Bank 2 Sensor 2 |
II |
LFY |
| 59 |
0.5 |
VT / GY |
496 |
Knock Sensor 1 Signal |
II |
LFY |
| 60 |
0.5 |
WH / GY |
1876 |
Knock Sensor 2 Signal |
II |
LFY |
| 61 - 62 |
- |
- |
- |
Not Occupied |
- |
- |
| 63 |
0.5 |
BK / VT |
2760 |
Intake Air Temperature Sensor Low Reference |
II |
LFY |
| 64 - 66 |
- |
- |
- |
Not Occupied |
- |
- |
| 67 |
0.5 |
GN / WH |
432 |
Manifold Absolute Pressure Sensor Signal |
II |
LFY |
| 68 - 69 |
- |
- |
- |
Not Occupied |
- |
- |
| 70 |
0.5 |
WH / BU |
6289 |
Intake Air Temperature Sensor Signal |
II |
LFY |
| 71 |
- |
- |
- |
Not Occupied |
- |
- |
| 72 |
0.5 |
YE |
581 |
Throttle Actuator Open Control |
II |
LFY |
| 73 |
2.5 |
BK / WH |
451 |
Signal Ground |
I |
LFY |