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Engine Harness to Underhood Fuseblock connector X50A -
Underhood X3 |
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Pin |
Wire |
Circuit |
Function |
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1 |
1 PK/BK |
5291 |
Ignition Voltage - Fuel Injectors/Coils 1,3,5,7, Fuse F10U 20A |
from powertrain relay |
2 |
1 PK/BK |
5292 |
Ignition Voltage - Fuel Injectors/Coils 2,4,6,8, Fuse F9U 20A |
from powertrain relay |
3 |
0.5 PK |
2139 |
Ignition Voltage (MYB or MYC) - Automatic Trans; F19U 20A |
from ignition run relay KR74 |
4 |
3 PU |
6 |
Starter Solenoid Crank Voltage |
|
5 |
-- |
-- |
-- |
|
6 |
0.5 YE |
5991 |
Powertrain Relay Control |
powertrain relay negative control |
7 |
0.5 D-GN |
335 |
Low Speed Cooling Fan Relay Control |
|
8 |
-- |
-- |
Not Used |
|
9 |
0.8 PK/BK |
5294 |
Ignition Voltage - Heated Oxygen Sensor B1S2, B2S2, Fuse F8U |
|
10 |
-- |
-- |
Not Used |
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11 |
-- |
-- |
Not Used |
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12 |
0.5 PU/WH |
6386 |
Starter Relay Control |
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13 |
0.5 BK/WH |
451 |
Ground |
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14 |
0.5 PK |
439 |
Ignition Voltage - ECM Pin 19, Fuse F20U 15A |
from ignition run relay KR74 |
15 |
-- |
-- |
Not Used |
|
16 |
0.8 PK/BK |
5293 |
Ignition Voltage - Heated Oxygen Sensor B1S1, B2S1, and EVAP Purge Solenoid
Pin A: Fuse F7U 10A |
from powertrain relay |
17-18 |
-- |
-- |
Not Used |
|
19 |
0.8 PK/BK |
5290 |
Ignition Voltage (L99 or LS3), ECM Pin 47, Fuse F5U 15A |
from powertrain relay |
20-26 |
-- |
-- |
Not Used |
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27 |
0.8 RD/WH |
1840 |
Battery Positive Voltage (MYB or MYC) - Automatic Trans; F2U 15A |
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28-35 |
-- |
-- |
Not Used |
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36 |
0.5 D-GN/WH |
459 |
A/C Compressor Clutch Relay Control |
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37 |
-- |
-- |
Not Used |
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38 |
0.5 D-BU |
473 |
High Speed Cooling Fan Relay Control |
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39-48 |
-- |
-- |
Not Used |
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49 |
0.5 D-GN |
59 |
A/C Compressor Clutch Supply Voltage |
|
50 |
0.5 PK |
239 |
Ignition Voltage - Mass Airflow Sensor Pin C, Valve Lifter Oil Manifold Pin
E, Fuse F14U 7.5A |
from ignition run relay KR74 |