Honda BF135A - Page 252

BF135A•BF150A
5-99
Is there the battery voltage?
YES – Go to the step 6.
NO – Blown No.3 (10A) fuse, or faulty ignition
switch, or open in the wire between the PGM-
FI main relay and the ignition switch.
6. Measure the voltage between the No.2 (White/Yellow)
terminal of the harness side 2P connector and the
engine ground.
Is there the battery voltage?
YES – Go to the step 7.
NO – Blown No.3 (10A) fuse, or faulty ignition
switch, or open in the wire between the PGM-
FI main relay and the ignition switch.
7. Check for the continuity between the fuse box side 4P
connector and ECM connector terminals:
Fuse Box
4P connector ECM connector C
No.4 (White/ Black)
No.1 (Yellow/Black)
No.4 (White/ Black)
No.5 (Yellow/Black)
Is there the continuity?
YES – Go to the step 8.
NO – Blown No.4 (15A) fuse, or open in the wire
between the PGM-FI main relay and the No.4
(15A) fuse, or open in the wire between the
No.4 (15A) fuse and the ECM.
8. Check for the continuity between the terminals of the
fuse box harness side 6P connector and ECM con-
nectors A and B:
Fuse Box
6P connector ECM connector A
No.3 (Light green/Red)
No.13 (Light green/Red)
Fuse Box
6P connector ECM connector B
No.3 (Light green/Red)
No.10 (Light green/Red)
Is there the continuity?
YES – Go to the step 9.
NO – Repair open in the wire between the PGM-FI
main relay and the ECM.
9. Turn the ignition switch ON. Measure the voltage
between the terminals of the ECM connector C:
No.1 (Yellow/Black) (
) No. 2 (Green) ( )
No.1 (Yellow/Black) (
) No. 6 (Green/red) ( )
No.5 (Yellow/Black) (
) No. 2 (Green) ( )
No.5 (Yellow/Black) (
) No. 6 (Green/Red) ( )
Is there the battery voltage?
YES – End of the check (Good)
NO – Replace the PGM-FI main relay.
ECM CONNECTOR A
ECM CONNECTOR B
VIEWED FROM THE TERMINAL SIDE
HARNESS SIDE
2P CONNECTOR
VIEWED FROM THE TERMINAL SIDE
FUSE BOX SIDE 4P
CONNECTOR
ECM CONNECTOR C
VIEWED FROM THE TERMINAL SIDE
LIGHT GREEN/
RED
FLR2
(LIGHT GREEN/RED)
FLR1
(LIGHT GREEN/RED)
WHITE/YELLOW
IGP2
(YELLOW/BLACK)
IGP2
(YELLOW/BLACK)
WHITE/BLACK
FUSE BOX
HARNESS SIDE
6P CONNECTOR
ECM CONNECTOR A
VIEWED FROM THE TERMINAL SIDE