TOHATSU BFT115A Service Manual page 113

WARNING BUZZER SOUNDS INTERMITTENTLY (LONG BEEP)
1. MIL inspection
Check to see if the MIL stays on.
Does the MIL stay ON?
YES – Perform PGM-FI troubleshooting (page 5-6).
NO – GO TO STEP 2.
2. Alternator indicator light inspection
Check to see if the alternator indicator light stays on.
Does the alternator indicator light stay ON?
YES – Perform charging system troubleshooting (page 7-4).
NO – Check the indicator light:
• Using the HDS (page 4-18)
• Without using the HDS (page 4-19)
• If indicator light is normal, replace the ECM with a new one and recheck
WARNING BUZZER SOUNDS INTERMITTENTLY (SHORT BEEP)
1. Water separator/fuel strainer (Low pressure side) inspection
Turn the combination switch OFF.
Check the water separator and fuel strainer (low pressure side).
Is there water in the cup?
YES – Remove the water and clean the cup of the water separator and fuel strainer.
NO – GO TO STEP 2.
2. Water level sensor inspection
Disconnect the water level sensor 2P connector
Does the warning buzzer sound the intermittent short term sound?
YES – Repair the shorted wire between ECM and water level sensor. If the wires are normal, replace the
ECM with a new one and recheck.
NO – Inspect the water level sensor (page 5-138).
TROUBLESHOOTING
and turn the combination switch ON.
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