How to Control a 4l80E with a GM 16197427 ECM
Intro
The GM 16197427 ECM can be used as a stand-alone 4l80E transmission controller. By disabling all engine related flags and piggy-backing the harness to your existing ECM you can use your current ECM for engine management and the 16197427 for transmission control. This how-to will attempt to explain every step of the process but it will focus on using the 16197427 with a Sy/Ty 1227749 ECM. Most of the parts needed can be obtained at a Junk Yard for $50 or less.
Thanks go to Jeff Scott, Paul Schwab, and Daron for providing the info needed to make this how-to.
Sections
3.) 16197427 Pinout and Connection Destinations
Destination Key |
To SyTy 1227749 ECM |
To 4L80E Connector |
Other |
Not Needed |
16197427 Pin | Function | Component | Dest. Device | Dest. Pin | Description | Wire Color |
A1 | Ground | Other | 749 ECM | A12 | System Ground. Goes to engine block. | Black/White |
A2 | Ground | Other | 749 ECM | A12 | System Ground Goes to engine block. | Black/White |
A3 | IAC A High | IAC Valve | ||||
A4 | Distributor IC Ref High | Distributor | 749 ECM | D8 | Spark Reference High. Provides RPM to 427 ECM | Purple/White |
A5 | Distributor IC Ref Low | Distributor | 749 ECM | D9 | Spark Reference Low. Provides RPM to 427 ECM | Black/Red |
A6 | IAC A Low | IAC Valve | ||||
A7 | IAC B Low | IAC Valve | ||||
A8 | IAC B High | IAC Valve | ||||
A9 | Injector 2 Control | Injector | ||||
A10 | O2 Sensor Signal | O2 Sensor | ||||
A11 | n/a | |||||
A12 | O2 Ground | Engine | ||||
A13 | n/a | |||||
A14 | Diagnostic Test | ALDL | ||||
A15 | TPS Signal In | Engine | 749 ECM | F13 | Provides Throttle Position signal to 427 ECM. 0-5 volts | Dark Blue |
A16 | Injector 1 Control | Injector | ||||
16197427 Pin | Function | Component | Dest. Device | Dest. Pin | Description | Wire Color |
B1 | n/a | |||||
B2 | IC(Ignition) Bypass | Distributor | ||||
B3 | Sensor Ground TPS, and Coolant | 749 ECM | B5 | TPS Ground | ||
B4 | Sensor Ground Map, EGR, Trans | Engine | 749 ECM & 4L80E | A12 & M | Sensor Ground Map, EGR, Trans | Black/White |
B5 | TFT Signal | Transmission | 4L80E | L | ATF temp + | |
B6 | n/a | |||||
B7 | n/a | |||||
B8 | Coolant Temp Sensor Signal | Resistor | Wire in a resistor then ground. | ECM needs to think engine is warm to lock TC. | ||
B9 | n/a | |||||
B10 | Cruise Control | Other | ||||
B11 | n/a | |||||
B12 | Fuel Pump | Engine | ||||
B13 | Map Signal In | Engine | MAP Sensor | |||
B14 | n/a | |||||
B15 | Knock Sensor | Engine | ||||
B16 | EGR Pintle Position Signal | Engine | ||||
16197427 Pin | Function | Component | Dest. Device | Dest. Pin | Description | Wire Color |
E1 | EGR Control | EGR | ||||
E2 | 3-2 Control Solenoid | Transmission |   |   | Used for 4L60E only!! | |
E3 | n/a | |||||
E4 | Range B Signal | Transmission | 4L80E | R | Provides Range B signal from tranny to ECM | |
E5 | Range C Signal | Transmission | 4L80E | P | Provides Range C signal from tranny to ECM | |
E6 | MIL SES Light Ground | Dash | Gauges | Service Engine Soon Light. Ground Side. Other side is hot. | ||
E7 | n/a | |||||
E8 | 2-3 Shift Solenoid B | Transmission | 4L80E | B | Shift Solenoid B 2-3 | |
E9 | 1-2 Shift Solenoid A | Transmission | 4L80E | A | Shift Solenoid A 1-2 | |
E10 | TCC Clutch Control | Transmission |   |   | TCC On/Off - 4L60E only!!!! | |
E11 | TCC Clutch Control | Transmission | 4L80E | S | TCC PWM | |
E12 | AC On Signal In | Other | ||||
E13 | Brake Signal | Other | Brake Switch. Purple Wire. | Power on brake off, power off brake on. | ||
E14 | 5V MAP, Linear EGR Reference | Engine | ||||
E15 | Ignition 20A hot in run or start | Engine | 749 ECM | A6 | 12 Volt fused ignition source. Off when key is off | Pink/Black |
E16 | Battery 20A hot at all times | Other | 749 ECM | B1 | 12 Volt fused Battery. On all the time | Orange |
16197427 Pin | Function | Component | Dest. Device | Dest. Pin | Description | Wire Color |
F1 | Range Signal A | Transmission | 4L80E | N | Range A | |
F2 | TISS In High | Transmission | 4L80E | TISS High In from 4L80E to ECM | Red/Black | |
F3 | TISS In Low | Transmission | 4L80E | TISS Low In from 4L80E to ECM | Dk Blue/White | |
F4 | n/a | |||||
F5 | n/a | |||||
F6 | Fuel Pump Relay | Engine | ||||
F7 | PCS Low | Transmission | 4L80E | D | Line Pressure - | |
F8 | FWD Low Range Signal | Other | ||||
F9 | Serial Data | Other | ALDL | Serial data out | ||
F10 | PCS High | Transmission | 4L80E | C | Line Pressure + | |
F11 | Ignition Control(IC) Signal | Distributor | ||||
F12 | Transmission output speed | VSS | VSS | C13 | DRAC Signal | Brown |
F13 | Vehicle Speed Signal | VSS | 749 ECM or VSS | C6 or C11 | DRAC Signal | |
F14 | 5V TPS Reference | Engine | 749 ECM | B5 | MAT and TPS 5V reference | Black |
F15 | Ignition | Other |   |   | 12 Volt Source to power: EGR, ECP Sol, 02 sensor |   |
F16 | Evap Canister Purge | Engine |
VSS Pinout:
4L80E Connector Pinout:
Pin | Color | Function | Destination |
A | Lt. Green | Shift Sol A - (1-2) | 16197427 ECM Pin E9 |
B | Yellow/Black | Shift Sol B - (2-3) | 16197427 ECM Pin E8 |
C | Red/Black | Line Pressure + | 16197427 ECM Pin F10 |
D | Lt. Blue/white | Line Pressure - | 16197427 ECM Pin F7 |
E | Pink/Black | TCC, 1-2, 2-3, 3-2 + | 12V Ignition 10A fuse hot run or start |
L | Blk/Green | ATF Temp - | 16197427 ECM Pin B5 |
M | Purple | ATF Temp + | 16197427 ECM Pin B4 |
N | Pink | Range A | 16197427 ECM Pin F1 |
P | Red | Range C | 16197427 ECM Pin E5 |
R | Blue | Rance B | 16197427 ECM Pin E4 |
S | White | TCC PWM - | 16197427 ECM Pin E11 |
  | Red/Black | TISS High | 16197427 ECM Pin F2 |
  | Dk Blue/White | TISS Low | 16197427 ECM Pin F3 |
  | Purple/White | TOSS High | VSS C12 |
  | Lt Green/Black | TOSS Low | VSS C7 |
Stock Sy/Ty 1227749 ECM Pinout:
Pin | Function | Wire Color | Connects to |
A1 | N/A |   | |
A2 | N/A |   | |
A3 | N/A |   | |
A4 | 5v Map Reference | Gra | |
A5 | 5v TPS Reference | Gra | |
A6 | 12v Ignition (Fused) | Pink/Black | 16197427 pin E15 |
A7 | N/A |   | |
A8 | N/A |   | |
A9 | ALDL Serial Data | Orange | |
A10 | N/A |   | |
A11 | Fuel Pump Relay Control | Green/White | |
A12 | System Ground | Black/White | 16197427 pins A1 & A2 |
Pin | Function | Wire Color | Connects to |
B1 | 12 Battery (Fused) | Orange | 16197427 pin E16 |
B2 | N/A |   | |
B3 | N/A |   | |
B4 | N/A |   | |
B5 | MAT and TPS Ground | Black | 16197427 pin B3 |
B6 | Coolant Temp Sensor and MAP Ground | Black | |
B7 | N/A |   | |
B8 | N/A |   | |
B9 | Ground |   | |
B10 | N/A |   | |
B11 | N/A |   | |
B12 | N/A |   | |
Pin | Function | Wire Color | Connects to |
C1 | N/A |   | |
C2 | N/A |   | |
C3 | N/A |   | |
C4 | N/A |   | |
C5 | N/A |   | |
C6 | DRAC Signal | Brown | 16197427 pin F13 |
C7 | EST Bypass | Tan/Black | |
C8 | EST Control | White | |
C9 | A/C Signal | Dark Green | |
C10 | N/A |   | |
C11 | Injector 2,4,6 Driver | Blue | |
C12 | Injector 1,3,5 Driver | Green | |
C13 | Injector Ground | Black/White | |
C14 | N/A |   | |
C15 | N/A |   | |
C16 | 12v Battery (Ffused) | Orange | |
Pin | Function | Wire Color | Connects to |
D1 | System Ground | Tan/White | |
D2 | N/A |   | |
D3 | N/A |   | |
D4 | N/A |   | |
D5 | N/A |   | |
D6 | N/A |   | |
D7 | Injector Ground | Black/White | |
D8 | Spark Reference | Purple/White | 16197427 pin A4 |
D9 | Distributor Reference Low | Black/Red | 16197427 pin A5 |
D10 | N/A |   | |
D11 | N/A |   | |
D12 | N/A |   | |
D13 | N/A |   | |
D14 | N/A |   | |
D15 | N/A |   | |
D16 | Park/Neutral Switch Signal | Orange/Black | |
Pin | Function | Wire Color | Connects to |
E1 | N/A |   | |
E2 | N/A |   | |
E3 | IAC Coil B Low | Lt Green/White | |
E4 | IAC Coil B High | Let Green/Black | |
E5 | IAC Coil A Low | Blue/Black | |
E6 | IAC Coil A High | Lt Blue/White | |
E7 | Check Engine Lap Control | Gra/White | |
E8 | CAC Control | Yellow | |
E9 | EVRV Solenoid Control | Gra | |
E10 | N/A |   | |
E11 |   | ||
E12 | ALDL Diagnostic Test | White/Black | |
E13 | N/A |   | |
E14 | Oxygen Sensor Signal | Purple | |
E15 | Oxygen Sensor Ground | Tan | |
E16 | Cooland Temp Sensor Signal | Black/Green | |
Pin | Function | Wire Color | Connects to |
F1 | A/C Relay Control | Green/White | |
F2 | Waste Gate Solenoid Signal | Black/Green | |
F3 | N/A |   | |
F4 | TCC Solenoid Control | Tan/Black | |
F5 | N/A |   | |
F6 | N/A |   | |
F7 | N/A |   | |
F8 | N/A |   | |
F9 | ESC Knock Sensor Signal | Dark Blue | |
F10 | N/A |   | |
F11 | N/A |   | |
F12 | N/A |   | |
F13 | TPS Signal | Dark Blue | 16197427 pin A15 |
F14 | WB O2 Input |   | |
F15 | MAP Signal | Light Green | |
F16 | MAT Signal | TAN |
4.) Bin, Definition, Datastream, and other files
5.) Burning the bin to the chip
The 16197427 uses a 64k byte bin. You will need a 512k C2 SST 27SF512 chip as 1 byte is 8 bits so 64kbits * 8 = 512k bits. You can get these at http://www.moates.net for $5.
When buring the bin to the chip select 29SF512 as the chip type. Set the start address to 0000 and the end to FFFF for both the buffer and chip. Select load file to buffer and select the desired bin file. Select write chip. Its probably not a bad idea to verify the data is on the chip after you write it.. When you install the chip in the carrier the little notch of the chip needs to face towards the outside of the ECM.