Honda Motor BF40D Manual Del Usuario página 410

• ECM TROUBLESHOOTING
MIL Is ON But DTC Is 0 Or Does Not
Communicate
1) DLC power line open-circuit inspection
a. Turn the combination switch OFF and disconnect
the HDS (Dr. H or pocket tester).
b. Turn the combination switch ON. Measure the
voltage between the DLC
terminal and the engine ground.
DLC
22
VIEWED FROM THE TERMINAL SIDE
Is there the battery voltage?
YES - Go to "2) DLC ground line open-circuit
inspection."
NO - Check the No.5 fuse and main relay (P. 18-17,
18). If there is no problem, replace the main
wire harness.
5-15
2) DLC ground line open-circuit inspection
22 No.3 (Yellow/Red)
(Yellow/Red)
410
• Turn the combination switch OFF. Check for
continuity between the DLC
terminal and the engine ground.
DLC
22
PG3 (Black/Blue)
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Go to "3) DLC short-circuit inspection."
NO - Repair open in the main wire harness
between the ECM and the DLC.
No.2 (Black/Blue)
22