7.1 Basic / Load Sections 7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL
• TPS shutoff - if TPS shutoff is enabled, the fan is disabled above this TPS%
• TPS hysteresis - the percent throttle opening that the TPS must drop below the TPS shutoff before the fan
comes back on
• VSS shutoff enable - turning this on allows the MS3Pro to shut off the fan based on vehicle speed since at
higher speeds the air flow through the radiator is often sufficient without the fan. Requires VSS input enabled
under Speed and Gear Sensors.
• VSS shutoff - if VSS shutoff is enabled, the fan is disabled above this vehicle speed
• VSS hyst - the amount the speed must drop below the VSS shutoff number before the fan comes back on
7.1.7 Torque converter lockup
MS3Pro has the ability to control electric lockup on automatic transmissions. This is for part-electric transmissions
(e.g. 700R4, A4LD) but not fully electric (e.g. 4L60E, 4L80E). As a minimum, TPS and MAP are used to set lockup
criteria. Optional criteria include an enable switch, brake switch, speed sensor, or gear sensor.
• Output port - output port to connect to lockup solenoid
• Enable input - optional input port for enable switch. For example, some transmissions have a switch that
turns on in fourth gear to enable lockup.
• Brake switch - optional input port for brake light switch. The torque converter unlocks if this input is active.
• Minimum TPS - minimum TPS to enable lockup
• Maximum TPS - maximum TPS to enable lockup
• Minimum MAP - minimum MAP to enable lockup
• Maximum MAP - maximum MAP to enable lockup
• Use VSS - optionally allow VSS1 or VSS2 speed input as criteria
• Minimum speed - sets minimum speed for lockup. (Requires VSS input in speed/gear sensors.)
• Use gear value - optionally allows gear number as criteria. (Requires gear to be enable in speed/gear
sensors.)
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 132
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