TOHATSU BFT75A Service Manual page 203

dummyhead dummyhead
FUEL SYSTEM
3. EOP sensor signal line open or short circuit/
GND line open circuit inspection
Measure the voltage between the EOP sensor 3P
connector
(Yellow/Red) terminal and No.3 (Green) terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
MIL BLINKS 23 (2 LONG BLINKS AND 3 SHORT BLINKS)
KNOCK SENSOR
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
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the knock sensor 1P connector
and ECM connector B
them.
Clear the DTC (page 5-5).
Start the engine and let it run at 5,000 min
7 minutes or more under no load.
Increase the engine speed gradually and run it at
3,000 min
Turn the combination switch OFF and connect the
SCS service check connector.
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 23?
YES
NO
5-62
main wire harness side No.2
– Replace the EOP sensor with a new one
and recheck.
– • Repair open or short in the Yellow/Red
wire
• Repair open in the Green wire.
• If the main wire harness is normal,
replace the ECM with a new one, and
recheck.
ECM
KS
28
, and then reconnect
-1 (rpm) for 10 seconds.
– GO TO STEP 2.
– Temporary failure (code
reappear)
EOP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
SG2
(Green)
KNOCK
SENSOR
10
R/Bu R/Bu
-1
(rpm) for
does not
POIL
(Yellow/Red)