Temp alarm

[mdwillis]

What typically goes wrong with the alarm system on an outboard motor? Is it the sound device itself or something else? Mine is not working. 1997 C40PLRV

 

[Silvertip]

Re: Temp alarm

Temperature switch or the module itself. Find the temperature switch. Disconnect the wire. Ground the wire (not the one from the switch but the one you disconnected the switch from). Turn on the key. If the alarm sounds, the system is ok. If it doesn't check for 12 volts and ground at the alarm. If present, the alarm is probably bad. Don't know if that unit has a key on self test or not but if it does, and it does not sound when you initially turn the key on then again it check connections to the module.

 

[99yam40]

Re: Temp alarm

The pink wire is the one you need to ground to test overheat alarm not the orange one, as the Orange is for telling CDI that the motor is warmed up.

Pink wire should go to CDI also and tell it to go into safe mode and retard timing, along with set off the buzzer.

Could be bad switch, wire, buzzer, ground connection, or no 12 + to buzzer