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I have a 2003 Yam 90hp on a 17ft Sea Pro. Something’s up with warning buzzer system and it’s been this way since I bought the boat. The engine runs good, there’s no issue with overheating, and I also keep the oil in the reservoir topped off. I believe it may be the low oil sensor based on the troubleshooting I’ve done below, but not sure where the oil sensor is to test or replace...
Troubleshooting Performed: There is a grey wire with a male/female bullet connection that has been disconnected by the prior owner (see pics 3 and 4 attached). This is located along and near the wiring harness. When it is connected with the ignition on, the warning buzzer sounds and continues to sound even after the engine is started. When disconnected there is no warning buzzer. Leaving the grey wire connected and the buzzer sounding, I disconnected the Overheat Sensor bullet connections but the buzzing sound continued. So I don’t think it’s the Overheat Senor.
I’ve simply left this grey wire disconnected and the engine runs good without the buzzing. But I am concerned that if my engine ever does start to overheat or the oil reservoir gets too low, I won’t receive a warning. Therefore, I want to correct this issue…
Additional Troubleshooting: There’s also a small black cylinder shaped capacitor/diode with 2 grey wires (male and female bullet connections - see pics 1 and 2 attached). One wire connects to a single pink wire that I think goes to the Overheat Sensor. The other wire connects to both a pink and grey wire that I suspect leads to the Oil warning sensor (??). Disconnecting either one of the 2 wire connections from this capacitor/diode stopped the warning buzzer. But when I bypassed the capacitor/diode altogether and connected the single pink wire to the pink and grey wire combo, the warning buzzer sounded again. [Note: Stamped on the capacitor/diode was Stanley DE64 on one end, and the number 2215Y1 was printed on the side. It was bound in black electrical tape]. I don’t see this part listed anywhere in the wiring diagram for the 2003 90TLRB and not sure what it does, or if it could be the problem. But if it was the problem I don’t think the warning buzzer should continue after bypassing it…
Questions: Does this sound like a problem with the Low Oil Sensor, Overheat Sensor, the small capacitor/diode, or something else? Where is the Low Oil Sensor connected and how can I test if this is the problem? Also, what is the capacitor/diode and where can I find one to replace if this is the problem?
Thanks,
Brian
Troubleshooting Performed: There is a grey wire with a male/female bullet connection that has been disconnected by the prior owner (see pics 3 and 4 attached). This is located along and near the wiring harness. When it is connected with the ignition on, the warning buzzer sounds and continues to sound even after the engine is started. When disconnected there is no warning buzzer. Leaving the grey wire connected and the buzzer sounding, I disconnected the Overheat Sensor bullet connections but the buzzing sound continued. So I don’t think it’s the Overheat Senor.
I’ve simply left this grey wire disconnected and the engine runs good without the buzzing. But I am concerned that if my engine ever does start to overheat or the oil reservoir gets too low, I won’t receive a warning. Therefore, I want to correct this issue…
Additional Troubleshooting: There’s also a small black cylinder shaped capacitor/diode with 2 grey wires (male and female bullet connections - see pics 1 and 2 attached). One wire connects to a single pink wire that I think goes to the Overheat Sensor. The other wire connects to both a pink and grey wire that I suspect leads to the Oil warning sensor (??). Disconnecting either one of the 2 wire connections from this capacitor/diode stopped the warning buzzer. But when I bypassed the capacitor/diode altogether and connected the single pink wire to the pink and grey wire combo, the warning buzzer sounded again. [Note: Stamped on the capacitor/diode was Stanley DE64 on one end, and the number 2215Y1 was printed on the side. It was bound in black electrical tape]. I don’t see this part listed anywhere in the wiring diagram for the 2003 90TLRB and not sure what it does, or if it could be the problem. But if it was the problem I don’t think the warning buzzer should continue after bypassing it…
Questions: Does this sound like a problem with the Low Oil Sensor, Overheat Sensor, the small capacitor/diode, or something else? Where is the Low Oil Sensor connected and how can I test if this is the problem? Also, what is the capacitor/diode and where can I find one to replace if this is the problem?
Thanks,
Brian
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