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BF135A•BF150A
5-61
b. TROUBLESHOOTING
• MIL Does Not Come On
1. Fuse check
-1. Turn the ignition switch ON and check that the warning
buzzer sounds twice.
Does the buzzer sound twice?
YES –
Perform "6. Alternator indictor light check".
NO –
Go to the step 2.
-2. Check the No. 4 (15A) fuse.
Is the fuse normal?
YES –
Go to the step 3.
NO –
Repair short in the wire between the No. 4
fuse and the ECM, and between the No. 4
fuse and the injector. After repair, replace the
No. 4 fuse.
-3. Check the No. 7 (30A) fuse.
Is the fuse normal?
YES –
NO –
Repair short in the wire between the PGM-FI
main relay and fuse box, and between the
PGM-FI main relay and starter magnetic
switch. After repair, replace the No. 7 fuse.
-4. Check the No. 3 (10A) fuse.
Is the fuse normal?
YES –
Perform "2. Main power supply line check".
NO –
Repair short in the wire between the fuse box
and ignition switch, between the fuse box and
alternator, between the fuse box and power
trim/tilt switch or the power tilt switch. After
repair, replace the No. 3 fuse.
2. Main power supply line check
-1. Disconnect the remote control harness 14P connector.
-2. Measure the voltage between the No. 3 (White/ Black)
terminal of the main harness side 14P connector and
the engine ground.
• Note that the battery voltage is constantly applied to
the White/Black terminal. Take care not to short-cir-
cuit the terminal.
Is there the battery voltage?
YES –
NO –
Repair open in the main harness wire.
-3. Turn the ignition switch ON. Check for the continuity
between the No. 1 (White/Black) and the No. 2
(Black/Yellow) terminals of the remote control box har-
ness side 14P connector.
Is there the continuity?
YES –
Perform "3. IGP power supply line check".
NO –
Go to the step 4.
-4. Check the ignition switch (P. 16-9).
Is the ignition switch normal?
YES –
Repair open in the remote control box har-
ness.
NO –
The ignition switch is faulty.
MAIN HARNESS SIDE
14P CONNECTOR
WHITE/BLACK
WHITE/BLACK
BLACK/YELLOW
VIEWED FROM THE TERMINAL SIDE
REMOTE CONTROL
HARNESS SIDE 14P
CONNECTOR
VIEWED FROM THE TERMINAL SIDE