posted 04-15-2007 10:11 AM ET (US)
I am not familiar with your specific motor or its alarm circuit. Generally a continuously sounding alarm comes from a temperature sensor.There are several possible modes of failure in this situation:
--there is an alarm condition, the alarm is sounding properly, and you have failed to detect the alarm condition;
--there is no alarm condition, the alarm is false, and you have a electrical failure in the alarm circuitry.
If the first case, you have to look for some actual malfunction in the engine. If the second case, the electrical failure in the alarm circuitry can be located in
--a failed sensor which is falsely signaling an alarm to the alarm module
--a failed alarm module which is falsely signaling the alarm sounder
--a failed alarm sounder which is falsely signaling an alarm without actual alarm input
To test for the first case, locate the temperature sensor and disconnect it from the alarm system. If this quiets the alarm, then the sensor is bad. If this does not quiet the alarm, look for other alarm sensors and disconnect them individually, check to see if they quiet the alarm. If you find that disconnecting a sensor will quiet the alarm, then it is likely that the problem is localized to that sensor.
If the alarm persists even with sensors disconnected, the alarm may be coming from the alarm module itself. Locate the alarm sounder. Disconnect the alarm module input lead from the sensor. If this quiets the alarm, then the alarm sounder is working properly and the alarm is being generated in the alarm module. Service or replace the alarm module. If the alarm persists with the alarm module disconnected from the alarm sounder, then the alarm sounder has malfunctioned. Service or replace the alarm sounder.