TOHATSU BFT 250A, Service Manual

Page: 184 / 639

5-62
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FUEL SYSTEM
2. EMT sensor 2 signal /GND line open circuit
inspection
Turn the combination switch OFF and disconnect
the EMT sensor 2 2P connector
.
Turn the combination switch ON.
Measure the voltage between the EMT sensor 2 2P
connector
main wire harness side No.1 (Red)
terminal and No.2 (Green) terminal.
Is the measurement within 4.75 – 5.25 V?
YES – Replace the EMT sensor 2 with a new one
and recheck.
NO – Repair open in the Red or Green wire
harness between the ECM and EMT
sensor 2. If the main wire harness is
correct, replace the ECM with a new one
and recheck.
MIL BLINKS 26 TIMES (2 LONG BLINKS AND 6 SHORT BLINKS) EOP SWITCH
(HIGH PRESSURE SIDE)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EOP switch (High pressure side) 2P
connector
, ECM connector B , switch
wire 6P connector , joint connector 1
and then reconnect them.
Reset the ECM (page 5-6).
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 26 times?
YES – GO TO STEP 2.
NO – Temporary failure (code does not
reappear).
EMT SENSOR 2 2P CONNECTOR
MAIN WIRE HARNESS SIDE
TOH2
(Red)
SG2
(Green)
Bl: Black
Y: Yellow
Bu: Blue
G: Green
R: Red
W: White Br: Brown
O: Orange
Lb: Light blue
Lg: Light green
P: Pink
Gr: Gray
ECM
EOP
SWITCH (HIGH)
G
2
12 V
SG2
25
JOINT CONNECTOR 1
32
OPSH Y/R Y/R
G
5
1
G/R
Y/R
G/R
Y/R
1
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