TOHATSU BFT75A Service Manual page 135

dummyhead dummyhead
TROUBLESHOOTING
7. EOP sensor inspection
Replace the EOP sensor (page 5-84).
Check the oil indicator light and buzzer.
Does the oil indicator light come ON and the buzzer stop sounding?
YES
NO
AND THE OVERHEAT INDICATOR LIGHT GOES OFF AND OIL INDICATOR LIGHT COMES ON
1. Overheat indicator light and oil indicator light inspection
Check the overheat indicator light and oil indicator light as follows:
– Using the Dr.H (page 5-5)
– Without using the Dr.H (page 5-5)
Are they correct?
YES
NO
WARNING BUZZER SOUNDS INTERMITTENTLY (LONG BEEP)
1. MIL inspection
Check to see if the MIL stays on.
Does the MIL stay ON?
YES
NO
2. Alternator indicator light inspection
Check to see if the alternator indicator light stays on.
Does the alternator indicator light stay ON?
YES
NO
3. Battery charging voltage inspection
Start the engine and check the battery voltage.
Voltage of the battery is normal (16.5 v or less)?
YES
NO
NO
4. Battery inspection
Stop the engine and check the battery voltage.
Voltage of the battery is 10 v or less?
YES
NO
4-22
– Faulty original EOP sensor.
– Replace the ECM with a new one and recheck.
– Replace the ECM with a new one and recheck.
– Replace or repair the faulty part.
– Perform PGM-FI troubleshooting (page 5-16).
– GO TO STEP 2.
– Perform charging system troubleshooting (page 7-3).
– Check the indicator light:
• Perform "FUNCTION TEST USING THE Dr.H" (page 5-13)
• Perform "FUNCTION TEST WITHOUT USING THE Dr.H" (page 5-43)
• If indicator light is correct, replace the ECM with a new one and recheck
– GO TO STEP 4.
– (16.5 v or less) Faulty regulator/rectifier.
– (Without voltage) Perform the charging system trouble shooting.
– Replace or charge the battery.
– Check the indicator light:
• FUNCTION TEST USING THE Dr.H (page 5-13)
• FUNCTION TEST WITHOUT USING THE Dr.H (page 5-43)
• If indicator light is correct, replace the ECM with a new one and recheck