2-37
BF135A•BF150A
• INTERMITTENT PROLONGED SOUND OF WARNING BUZZER KEEPS SOUNDING
Perform MIL troubleshooting (P.
5-18 or 5-61).
Replace or repair the wire har-
ness (Open in the wire har-
ness between the indicator
light and No. 5 (10A) fuse).
YES
NO
Is the alternator indicator light
ON?
NO
Yes
NO
YES
Yes
YES
Adjust the alternator belt ten-
sion.
Replace the fuse.
• Check for blown bulb. Replace
if necessary.
• If the bulb is not blown out,
replace the indicator light.
Is the MIL ON?
Replace the fuse.
NO
Check for open in the indicator
light power line.
1 Turn the ignition switch OFF
and disconnect the indicator
light 3P connector.
2 Turn the ignition switch ON.
Measure the voltage bet-
ween the No. 3 (Yellow/Black)
terminal of the harness side
3P connector and the engine
ground.
Is there the battery voltage?
Harness side
connector
Viewing from
terminal side
Is the alternator fuse (90A) nor-
mal?
YES
Perform alternator trouble-
shooting (P. 2-31).
Check the alternator 4P con-
nector for connection.
Is the alternator 4P connector
connected properly?
YES
Check the load. If there is no
problem, replace the battery.
NO
Measure the voltage between
the measurement battery ter-
minals.
Is the voltage 13.5V or above?
Is the alternator belt tension
correct?
No
NO