Honda BF40D Mode D'emploi page 429

3) EACVP line short-circuit check
• 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
connector main wire harness side No.1
5
(Green/Black) 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 "5) IAC valve line open-circuit
inspection."
5) IAC valve line open-circuit inspection
. Check for
10
5
EACVP (Green/Red)
line short-circuit
EACVM (Green/Black)
429
• Connect the IAC valve 2P connector
the resistance between the main wire harness side
No.11 (Green/Red) terminal
(Green/Black) terminal of the ECM connector B
.
10
ECM CONNECTOR B
MAIN WIRE HARNESS SIDE
10
EACVP
EACVM
(Green/Red)
(Green/Black)
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
and the No.12
5-34