E. Fuel System .................................................................................. 74
E.1. Injector Sizing .................................................................................................................75
E.2. Fuel Pump Selection........................................................................................................79
E.3. Fuel Pressure Regulator Selection...................................................................................79
F. TECgt Output Functions and Wiring ....................................... 80
F.1 Idle Air Control Motor .....................................................................................................80
F.2. Tachometer Output..........................................................................................................82
F.3. The Fuel Pump Relay Output ..........................................................................................82
CAUTION: ..............................................................................................................................83
G. TECgt Input Functions and Wiring ........................................ 84
G.1. The Manifold Air Pressure (MAP) Sensor
C B A .......................................................84
G.2. Throttle Position Sensor..................................................................................................87
TPS Functionality and Wiring .................................................................................................88
G.3. Coolant Temperature Sensor ..........................................................................................89
G.4. Manifold Air Temperature Sensor..................................................................................91
G.5. The Exhaust Gas Oxygen Sensor....................................................................................92
Mounting the Sensor................................................................................................................92
G.6. Wideband O2 Sensor ......................................................................................................94
FAQ’s and Troubleshooting Tips: ...........................................................................................95
G.7. Knock Sensor..................................................................................................................96
H.1. The General Purpose Inputs (GPI’s) and General Purpose Outputs
(GPO’s) or GP I/O’s.......................................................................... 97
H.1.a. Available General Purpose Input (GPI) Functions : ...................................................98
H.1.b. Wiring the GPI’s..........................................................................................................99
H.1.c. GP I/O Wiring Harness Layout..................................................................................100
H.2. General Purpose Output (GPO) functions : ..................................................................101
H.2.a. Available GPO Functions ..........................................................................................101
H.2.b. Wiring the GPO’s: .....................................................................................................102
I. Diagnostics................................................................................... 104
I.1. Trouble Codes from the LED’s Mounted on the TECgt ................................................104
I.2. Trouble Codes from the Check Engine Output ..............................................................105
Trouble Code Descriptions ....................................................................................................106
I.2.a. Using the Trouble Codes .............................................................................................107
I.2.b. Wiring the Check Engine Light...................................................................................108
J. Data logging with the TECgt..................................................... 108
J.1. PC-Based Data logging ..................................................................................................109
J.2. On-Board Data logging ...................................................................................................109
K. Rev Limiters .............................................................................. 109
K.1. Valet Mode Rev Limiter ...............................................................................................110
K.2. Secondary Rev Limiter : ...............................................................................................110
K.3. Primary Rev Limiter : ...................................................................................................110
L. Timing Control ........................................................................... 110
L.1. Zero degree advance......................................................................................................110
L.2. 3-stage coil cut ..............................................................................................................110
L.3. FUEL CONTROL .........................................................................................................111
L.3.a. No Fuel Cut ................................................................................................................111
L.3.b. Fuel Cut ......................................................................................................................111
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TECgt Manual Version 2.0
- Page 3 -
©2008 Electromotive, Inc.
