Honda BF40D Mode D'emploi page 442

• ECM TROUBLESHOOTING
MIL ON But Does Not Blink or Indicate DTC
Code
1) DLC short-circuit inspection
a. Turn the combination switch OFF. Disconnect the
ECM connector A
9
connector.
b. Check for continuity between the DLC
(Light green) terminal and the engine ground.
DLC
22
SCS
(Light green)
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the DLC.
NO - Go to "2) MIL ON line short-circuit
inspection."
5-47
2) MIL ON line short-circuit inspection
and the SCS short
22 No.4
3) MAP sensor power line short-circuit inspection
442
• Check for continuity between the ECM connector A
main wire harness side No.19 (Red/Blue)
9
terminal and the engine ground.
ECM CONNECTOR A
MAIN WIRE HARNESS SIDE
9
WARNL (Red/Blue)
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the MIL.
NO - Go to "3) MAP sensor power line short-circuit
inspection."
a. Connect the ECM connector A
the MAP sensor 3P connector
b. Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES - Replace the MAP sensor.
NO - Go to the step c.
and disconnect
9
.
3