Honda BF40D Mode D'emploi page 459

d. Check for continuity between the IAC valve 2P
connector IAC valve side No.2 terminal and
5
the engine ground.
AC VALVE 2P CONNECTOR
IAC VALVE SIDE
5
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Replace the IAC valve with a new one and
recheck.
NO - Go to "3) EACVP
inspection."
3) EACVP line short-circuit inspection
• Disconnect the ECM connector B
continuity between the IAC valve 2P connector
main wire harness side No.2 (Green/Red) terminal
and the engine ground.
IAC VALVE 2P CONNECTOR
MAIN WIRE HARNESS SIDE
5
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the IAC valve.
NO - Go to "4) EACVM
inspection."
4) EACVM line short-circuit inspection
• Check for continuity between the IAC valve 2P
EACVP
line short-circuit
5) IAC valve line open-circuit inspection
• Connect the IAC valve 2P connector
. Check for
10
5
EACVP (Green/Red)
line short-circuit
459
connector main wire harness side No.1
5
(Green/Black) terminal and the engine ground.
IAC VALVE 2P CONNECTOR
MAIN WIRE HARNESS SIDE
5
EACVM (Green/Black)
VIEWED FROM THE TERMINAL SIDE
Is there continuity?
YES - Repair short in the main wire harness
between the ECM and the IAC valve.
NO - Go to "5) IAC valve line open-circuit
inspection."
the resistance between the main wire harness side
No.11 (Green/Red) terminal and No.12 (Green/Black)
terminal of the ECM connector B
ECM CONNECTOR B
MAIN WIRE HARNESS SIDE
10
EACVM
EACVP
(Green/Black)
(Green/Red)
VIEWED FROM THE TERMINAL SIDE
Is the measurement within 10 - 13 ?
YES - Replace the ECM with a new one and
recheck.
NO - Repair open in the main wire harness
between the ECM and the IAC valve.
. Measure
5
.
10
5-64