SM4 Manual
by
MRM-Racing
V3.0
129
Fault Finding
No Communication
•
Check communication cable. Check tat it is plugged in firmly and does not have a
damage. Cables are easily damaged when shut in car doors.
•
Make sure that the FIFO buffers are turned off, se help “Windows FIFO setup”
•
Make sure you are using correct Com port, “try another port” menu is showed
when trying to go online.
•
Check the cable with “check data link” which is viewed when trying to go online.
•
Check power to the SM4, Check that the ignition switch input has power when
ignition is on.
•
Check that no other software is using the COM port.
No RPM signal
•
Check that the Hall Effect or Optical trigger has power if either of these types are
used as Cylinder Pulse trigger.
•
Check that the SM4 has +12 volt on both ignition switch and power inputs while
cranking. Some vehicles disconnect power to accessory devices during cranking
to minimize power draw from these devices.
•
Check the trigger wiring. If you have access to an oscilloscope , then check the
input to the SM4.
•
Check that the software is setup correct under “I/P Crank & Cyl”.
•
If using magnetic triggers, make sure you use shielded wires and that the polarity
is wired correctly.
No Spark or Injection pulses
•
Check that you have a RPM signal. You should have a cranking speed of 100-300
rpm, if not se above
No RPM Signal.
•
Check power to your injectors and ignitions coil(S) while cranking.
•
Check that all power leads to the ECU has power during cranking.
•
Check that the software is configured correctly to match your ignition setup.
•
If injectors are firing but there are no spark the most common cause will be the
reference sensor. Check that there are no “Sync Errors” reported and there is a
good Reference signal from the cam sensor.
•
If you got an oscilloscope, check the injector/ignition outputs for a pulsing signal.
Содержание SM4
Страница 1: ......
Страница 125: ...SM4 Manual by MRM Racing V3 0 125 ...
Страница 134: ...SM4 Manual by MRM Racing V3 0 134 Boost Control Diagrams Internal Wastegate ...
Страница 135: ...SM4 Manual by MRM Racing V3 0 135 External Wastegate ...