“SMART” TACHLESS MODE
SMART TACHLES JUMPERS: (Remove Access Door on top of module)
The purpose of the jumpers is to reduce the starter cranking time [if needed] when in
“Smart Tachless”
mode only.
PIN ORIENTATION:
Looking at remote start upright with harnesses facing down (or towards you).
To shorten the crank time one level, remove the jumper at the far right. Test the unit and see if the decrease is correct. If
a shorter crank time is still required, then remove the middle jumper. Test the unit and see if the decrease is correct.
There are only (2) adjustments. Removing the third jumper will not make any change to the crank time. These (2) setting
should correct most cranking times when in Smart Tachless mode.
IMPORTANT SMART TACHLESS NOTES:
NOTE (1):
Smart Tachless Mode is NOT guaranteed to work on EVERY vehicle. Some older vehicles, Dual-Battery
Systems, or Out-of-Tune vehicles will not operate properly in Smart Tachless Mode. Use Tach Reference Mode if
problems occur with Smart Tachless Mode
NOTE (2):
If you have connected the RED power lines before performing steps for “Set Smart Tachless Mode”, the
RS900 will not have the correct voltage reference for your vehicle. If this is the case, power down the unit and perform
those steps.
NOTE (3):
If you have changed battery in the vehicle, wait 2 hours before attempting a remote start or follow the steps
for “Set Smart Tachless Mode” again.
TACH REFERENCE MODE
Tach Reference Mode:
This mode provides reliable starting performance though engine speed sensing. When using this
mode, the WHITE/RED wire provides the signal input for the RS-900 system to monitor the engine and control the starter
motor. Most modern engines include various points where the Engine Speed signal may be obtained. TACH SIGNAL
EXAMPLES: Negative (-) side of ignition coil, at the Distributor, at the Ignition Control Module, a Coil Pack, Engine
Computer, or Crankshaft Sensor. Sometimes Fuel injection solenoids, and Alternator stator pins can be used.
Note: The Tach Signal locations above 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. The RS-900 may not detect a clean signal.
Call Crimestopper for Tech Support if you cannot locate a proper tach source for your vehicle.
Summary of Contents for RS-900ER.III
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