Starting in 2009, 4L60E, 4L65E, 4L70E no longer has a TFP (Trans
Fluid Pressure Switch) assembly, and is replaced by the trans range sensor.
Prior to 2009, the range sensor was located on the outside of the trans, over
the manual shaft. It is now located INSIDE the trans. Below are 2009
schematics for the 4L60E in a C/K truck platform.
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X175 Engine Harness to Transmission Internal Harness
(M30) |
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X175 Engine Harness to Transmission Internal Harness
(M30) |
|
Pin |
Wire |
Circuit |
Function |
|
A |
0.5 L-GN |
1222 |
1-2 Shift Solenoid Valve Control |
|
B |
0.5 YE/BK |
1223 |
2-3 Shift Solenoid Valve Control |
|
C |
0.5 OG/BK |
1228 |
PC Solenoid Valve High Control (Sol. A) |
|
D |
0.5 L-BU/WH |
1229 |
PC Solenoid Valve Low Control (Sol. A) |
|
E |
0.5 PK/WH |
2139 |
Ignition 1 Voltage |
|
F |
0.35 TN/WH |
771 |
Transmission Range Signal A |
|
G |
0.35 YE |
772 |
Transmission Range Signal B |
|
H |
0.35 GY |
773 |
Transmission Range Signal C |
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J |
0.35 WH |
776 |
Transmission Range Signal P |
|
K |
0.35 OG |
1983 |
AT ISS High Signal |
|
L |
0.5 YE/BK |
1227 |
TFT Sensor Signal |
|
M |
0.35 TN |
2762 |
Low Reference |
|
N |
0.5 BK/WH |
451 |
Ground |
|
P–S |
— |
— |
Not Used |
|
T |
0.5 TN/BK |
422 |
TCC Solenoid Valve Control |
|
U |
0.5 BN |
418 |
TCC PWM Solenoid Valve Control |
|
V |
0.35 L-BU |
1984 |
Transmission Turbine Speed Switch Low Reference |
|
W |
0.35 OG/BK |
1786 |
Transmission Park/Neutral Signal |
