TOHATSU BFT250A Service Manual page 156

dummyhead dummyhead
FUEL SYSTEM
DTC 14-1 (ABNORMAL IAC VALVE)
ECM
EACVP
EACVM
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the IAC valve 2P connector
connector B
Clear the DTC (page 5-6).
• Continue the procedure if the DTC does not
clear.
Start the engine and check the DTC using the HDS.
Does the DTC 14-1 appear?
YES
NO
2. IAC valve inspection
Turn the combination switch OFF and disconnect
the IAC valve 2P connector
Inspect the IAC valve (page 5-125).
Is the IAC valve correct?
YES
NO
5-34
G
Bl
and then reconnect them.
– GO TO STEP 2.
– Temporary failure (code
reappear).
.
– Repair open or short in the main wire
harness between the ECM and IAC valve.
If main wire harness is correct, replace the
ECM with a new one and recheck.
– Replace the IAC valve with a new one and
recheck.
, ECM
does not
IAC
VALVE
G
Bl
Bl: Black
Br: Brown
Y: Yellow O: Orange
Bu: Blue Lb: Light blue
G: Green Lg: Light green
R: Red P: Pink
W: White Gr: Gray