MSD 2950 Atomic LS2_LS3 Master Kit Installation - Manual (Page 19)

INSTALLATION INSTRUCTIONS 19
M S D
• W W W . A T O M I C E F I . C O M • ( 9 1 5 ) 8 5 5 - 7 1 2 3 • F A X ( 9 1 5 ) 8 5 7 - 3 3 4 4
CODE NAME
TPS
MAP
IAT
ECT
BATT
INJ DC
FUEL PRESSURE
WBO2
FP CAV
MAP SELECT
BARO
The following chart gives the most likely solution(s) to each possible error.
CLEARING HISTORY ERRORS
There are two ways to clear an error. First, the code will erase after 10 key cycles. Second, is to simply
navigate to the message screen and push the joystick down to clear the codes.
WHAT IT MEANS
There is no reading for the Throttle Po-
sition Sensor.
There is no reading for the Manifold
Absolute Pressure Sensor.
There is no reading for the Inlet Air
Temperature Sensor. The ECU will de-
fault to 275°F when shorted or -40°F
when open.
There is no reading for the Engine
Coolant Temperature Sensor. he ECU
will default to 275°F when shorted or
-40°F when open.
The Atomic is receiving the wrong volt-
age. The unit is measuring either less
than 9 volts or greater than 16 volts.
Excessive Injector Duty Cycle
There is no reading for the Fuel Pres-
sure Sensor.
A. "NOT CONNECTED" indicates that
no sensor is detected.
B. "ERROR" indicates that the sensor
has failed.
This code will set if there is an issue with
Fuel Pump Cavitation (similar to vapor
lock). It can only set when running a
returnless fuel system. This may occur
when the commanded fuel pressure
(from the ECU) is different than the fuel
pressure (at the sending unit).
ECU compares the MAP reading with
the Baro reading on key up. If these
are different by more than 5kPa, the
code is activated.
The baro sensor on the board is out
of range. It will use the last know
good value.
PROBABLE CORRECTION(S)
The sensor may be at fault.
The sensor maybe at fault.
Check to see that the sensor is properly installed and plugged
in. If the sensor is connected but there is no signal, it will need
to be replaced.
Check to see that the sensor is properly installed and plugged
in. If the sensor is connected but there is no signal, it will need
to be replaced.
Check that the Atomic has power and ground directly from
the battery. Also be sure the vehicle's battery and charging
system are in proper working order.
If you are running a returnless fuel system your engine's
needs may exceed the Atomic's maximum capabilities. If you
are running a return system check to see that you are main-
taining the recommended fuel pressure. If you have adequate
fuel pressure the engine's needs may exceed the Atomic's
system capabilities.
The sensor will need to be replaced.
A. Check to see that the sensor is securely plugged into the
system.
B. The sensor will need to be replaced.
Note that 'warming up' is normal during start-up for the first 20
seconds.
This means you need to review your fuel pump system and
confirm that your application meets the requirements to run a
returnless (PWM) system. Also check the filters, the sock in the
tank and inspect the lines for any kinks or pinches that would
affect the fuel flow and pressure of the system. If everything
checks okay and the code continues, you may need to move
to an in-tank pump, or use a regulated (return) fuel system.
Double check your MAP selection and make sure that you
selected the correct P/N of sensor. It could also mean a
problem with the Baro or MAP sensor itself (see above codes).
Turn the key off, wait 10 seconds and turn back on to see if
the code remains. If so, call customer service. As long as
the vehicle has not changed altitude by a large amount since
the last key off (towed somewhere), everything will function
normally.