MoTeC M8 - Manual (Page 41)

MoTeC Initial Starting Procedure 39
The Injector Current Setup Parameter IJCU is set too high.
The battery voltage is too low.
Over Duty
The injector duty cycle is too high, typically the duty cycle should not exceed
85%.
If the injectors exceed their maximum duty then larger injectors or higher fuel
pressure is needed.
REF / SYNC Errors
The possible causes of the various errors are detailed below :
REF Error
Too many REF pulses have occurred between SYNC pulses.
Possible causes :
A bad REF signal has caused extra pulses or a SYNC pulse has
been missed - check voltage levels with a scope.
Bad REF / SYNC alignment.
Incorrect Setup
No REF
Two SYNC signals have occurred without a REF signal.
Possible causes :
If the RPM is 0 then there is no signal - check the wiring and sensor
voltage levels with a scope.
If RPM is not 0 then a bad SYNC signal has caused extra pulses -
check voltage levels with a scope.
If RPM is low then the REF and SYNC signals may have been
swapped.
Incorrect Setup
SYNC Error
The SYNC signal has occurred before expected.
Possible causes :
A bad SYNC signal has caused extra SYNC pulses - check voltage
levels with a scope.