NOTE: The terminator harness does not have a Speedometer output wire, nor is the calibration programmed for it.
Figure 29 Figure 30
Figure 31 Figure 32
21.0 SENSOR VERIFICATION
Before starting the vehicle, verify that all of the sensors are reading properly. At this time, turn the key off, and cycle it back on. At this
time you should hear the fuel pump come on and run for 5 seconds. Check for fuel leaks at this time as well.
On the HOME SCREEN, select the MONITOR tab. This will bring up various options. Select the “Monitors” screen. You will see a screen
called “Sensors”. Select this. With the key on and the engine off, these sensors should read as follows:
MAP (Manifold Air Pressure Sensor) – Should read from 95-102. At high elevations it could read as low as 75.
TPS (Throttle Position Sensor) – Should read 0. Slowly depress the throttle to wide open. It should read 100 at wide open
throttle. If it reads 1-2, you may want to lower the idle screw on the throttle body.
MAT (Manifold Air Temperature Sensor) – reads current air temperature
CTS (Coolant Temperature Sensor) – reads engine temperature. If the engine is “cold”, it should read almost the same as the
MAT sensor.
Battery – Will read battery voltage. Should be 12.0 volts minimum.
If ANY of these sensors are not reading properly, this must be resolved before the engine is started.
22.0 STARTUP
The vehicle should be ready to be started. Open the sensors screen. Make sure the TPS is reading 0. If it does not, do a TPS
AUTOSET, or if it is reading 1-2%, close the idle screw on the throttle body slightly.
Crank the engine and look at the RPM parameter. It should change to “Syncng”, indicating the ECU is syncing with the RPM signal for an
instant, then show an RPM signal. The engine should fire and run and come to an idle.
If you do not get an RPM signal, there is an error in the wiring or system setup. Call Holley Tech service for advice.
If the engine starts but is idling too low and appears to be struggling for air, you may have to open the throttle body idle speed screw at
this time. If you move the screw, you will need to perform a TPS Autoset.
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