S.A.F.E. WARNING SYSTEM
The EMM activates the warning horn and gauge displays as follows:
- LOW OIL means that oil in the tank is at reserve level (about 1/4 full).
- NO OIL indicates the oil tank is empty.
- WATER TEMP or HOT indicates an engine or EMM overheat condition.
- CHECK ENGINE or FAULT is used to indicate other fault conditions identified by the EMM.
Refer to the EMM Service Code Chart at the back of this manual for a complete list of all engine fault codes.
All warning light circuits are active when the engine is running. The horn circuit is active when engine speed exceeds 500 RPM.
Engine monitor warnings activate the horn for 10 seconds and the appropriate gauge light for a minimum of 30 seconds. If the failure is momen tary (for example, oil moving in the tank), the light will remain ON for the full 30 seconds before going out. If the fault continues, the light remains ON until the key is turned OFF or the failure is cor rected. The warning will reoccur at the next start up if the problem is not corrected.
The S.A.F.E. (Speed Adjusting Fail safe Electronics) warning system alerts the operator and protects against engine damage from the following abnormal conditions:
| Code 29 | Excessive EMM temperature |
|---|---|
| Code 31 | Excessive engine temperature |
| Code 33 | Critical NO OIL detected |
| Code 34 | Oil injector open circuit |
| Code 117 | NO OIL |
Activation
When one of these conditions occurs, the EMM interrupts fuel injector and ignition operation, reducing engine speed to 2500 RPM. The dash mounted warning horn sounds and an Engine Monitor display turns on (when installed). When S.A.F.E. is active, the engine will run normally below 2500 RPM. Above 2500 RPM, the engine will shake excessively.
Recovery
The engine will operate in S.A.F.E. as long as the fault condition exists. To recover normal operation, two conditions must be met:
- Sensor or switch readings must be back within limits
- The EMM must be reset—stop and restart
