Check Low Speed RPM
engine
Description
Check Low Speed RPM means engine speed is not between 1200 and 1500 rpm in Test #7 or does not drop back in Test #9, and Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
Activation Conditions
In Test #7: With the CAN calling for low speed, engine speed is NOT between: 1200 and 1500 rpm. In Test #9: 15 seconds after the High Speed Pretrip Test #8, engine speed has NOT dropped back to the low speed range (within 15 seconds) as shown above. NOTE Test will be skipped if engine speed sensor alarm 00130 Check Engine RPM Sensor is active.
Unit Behavior
Pretrip will fail and display “PRETRIP FAIL AND COMPLETED”.
Reset Conditions
Auto reset if Pretrip is started again or alarm may be manually reset using the display mounted keys or by turning the unit off then back on again.
Corrective Actions
Check Low Speed Operation: Refer to procedure for alarm 00037 Check Low Speed RPM. Alarm condition must be corrected and the alarm cleared to continue.