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ENGINE APPLICATION MANUAL GM Powertrain
Gasoline 4.3L V6 90 Degree Revised: 08/15/2000
File: c:\data\manuales\v6-truck\am43v6#3.doc
Contact:Luis Nespolo - (248) 857-1558 Printed: 8/15/00
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3.1.3.4 TCC Control Algorithm
The TCC algorithm determines when the torque converter clutch is applied or released, using
a set of tables. These tables also determine and control the rate of application and release of
the TCC based on Throttle position
3.1.3.5 Inputs from Transmission to PCM
The following are external Inputs coming from the Transmission to the PCM:
Transmission Speed Sensor
Transmission Fluid Temperature Sensor
Transmission Range Pressure Sensor
3.1.3.6 Output to the Transmission from PCM
TCC Solenoid
Transmission Shift solenoids
Pressure Control Solenoid
3.1.4 PCM Interface to Vehicle
3.1.4.1 External Inputs of the Engine
The following are external Inputs coming from the vehicle to the PCM:
A/C Status
Ignition Voltage
Serial Data (Diagnostics)
Brake/ Clutch Status
4WD Lo Switch (If Applicable)
Diagnostic Enable
Cruise Control Inputs
Tow/Haul Input Switch
3.1.4.2 Output to the Vehicle:
Data link Connector
MIL “Service Engine Soon” Lamp
“Service Throttle Soon” (STS) Lamp