Honda BF40D Mode D'emploi page 443

c. Turn the combination switch OFF and disconnect the
ECM connector B .
10
d. Check for continuity between the MAP sensor 3P
connector main wire harness side No.1 terminal
3
(Brown/Yellow) and the engine ground.
MAP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
VIEWED FROM THE
TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the MAP sensor.
NO - Go to "4) TP sensor power line short-circuit
inspection."
4) TP sensor power line short-circuit inspection
a. Connect the ECM connector B
the TP sensor 3P connector
b. Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES - Replace the throttle body.
NO - Go to the step c.
c. Turn the combination switch OFF and disconnect
the ECM connector B
10
d. Check for continuity between the TP sensor 3P
connector main wire harness side No.1
2
(Brown/Yellow) terminal and the engine ground.
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
2
VIEWED FROM THE
TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the TP sensor.
NO - Go to "5) Trim angle sensor power line short-
circuit inspection" (Power trim/tilt type only).
Go to "6) ECM power line inspection" (Gas
assisted type only).
3
VCC1
(Brown/Yellow)
and disconnect
10
.
2
.
VCC2
(Brown/Yellow)
443
5) Trim angle sensor power line short-circuit inspection
(Power trim/tilt type only)
a. Connect the ECM connector B
the trim angle sensor 3P connector
b. Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES - Replace the trim angle sensor.
NO - Go to the step c.
c. Turn the combination switch OFF and disconnect
the ECM connector B
10
d. Check for continuity between the trim angle sensor
3P connector main wire harness side No.3
15
(Light green/Black) terminal and the engine ground.
TRIM ANGLE SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
15
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the trim angle sensor.
NO - Go to "6) ECM power line inspection."
6) ECM power line inspection
• Turn the combination switch ON. Measure the
voltage between the respective terminals of the
main wire harness side No.8 (Yellow/Black) terminal
and No.9 (Yellow/Black) terminal of the ECM
connector B 10 and the engine ground.
ECM CONNECTOR B
MAIN WIRE HARNESS SIDE
10
IGP2 (Yellow/Black)
VIEWED FROM THE TERMINAL SIDE
Is there the battery voltage?
YES - Replace the ECM with a new one and
recheck.
NO - Check the No.6 fuse and the main relay (P.
18-17, 18). If there is no problem, replace the
main wire harness.
and disconnect
10
.
15
.
VCC3
(Light green/Black)
IGP1 (Yellow/Black)
5-48