IMPROVED “SMART TACHLESS” MODE
This RS900/901/999FM systems includes a unique voltage monitor system called “Smart Tachless” mode. This mode
allows this unit to efficiently start an engine without the use of a tach signal wire. These modules actively monitor the
voltage reference on the vehicle every time remote start is requested.
IMPORTANT NOTES:
(1) NO SETUP is required for the RS900/901/999FM improved “Smart Tachless” Mode (PLUG
and PLAY). (2) On the rare occasion that “Smart Tachless” mode does not operate satisfactorily, change the voltage
reference level as described below, or use a verified tach source with the red/white tach wire.
REDUCING “SMART TACHLESS” CRANKING TIME:
In the event “Smart Tachless” mode slightly over-cranks the starter motor, the settings can be changed. The purpose of
adjusting the “Smart Tachless” Mode, is to lower the voltage reference threshold [required by the unit] which reduces the
cranking time. There are two settings available: #10 (Lower) and #9 (Lowest). To set the voltage reference level ONE
step lower, follow these steps:
1. Open hood (or ground Gray wire if no hood pin is installed)
2. Turn the key to the ON position
3. Press program button 5 times, after a few seconds the unit will flash the lights 5 times.
4. Carefully press the program button 10 times (you must get a light flash after each press.)
5. Press the Lock Button on the remote. Lights will flash once. (For RS901 Models with no remote transmitters, tap
the brake once in place of pressing the lock button on the remote)
6. Turn Ignition OFF, Close hood (or un-ground the Gray wire) and check to see if cranking time is reduced.
TO LOWER THE UNIT TO THE LOWEST REFERENCE LEVEL: Repeat steps above, however press the program
button 9 TIMES in STEP #4.
TACH (RPM) REFERENCE MODE
Tach Reference Mode
provides reliable remote starting performance though engine speed sensing. When using Tach
Reference Mode, the Red/White wire is used for Tach signal [Engine RPM] input. Most modern engines include various
points where the Engine Speed [Tach] or A/C signal may be obtained. Tach Signal examples: Negative (-) side of ignition
coil, at the Distributor or Ignition Control Module, Coil Pack, Engine Computer, or Crankshaft Sensor. Sometimes Fuel
injection solenoids, and Alternator stator pins can be used.
These Tach Signal locations mentioned are provided as a
guide, your vehicle may differ. Some locations will NOT be a good location for Tach source due to RF noise or Computer
Data. TACH FINDER mode will assist you in locating a valid tach source. (See Next Page.)
