TOHATSU BFT250A Service Manual page 184

dummyhead dummyhead
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
terminal and No.2 (Green) terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
MIL BLINKS 26 TIMES (2 LONG BLINKS AND 6 SHORT BLINKS) EOP SWITCH
(HIGH PRESSURE SIDE)
ECM
12 V
SG2
OPSH
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EOP switch (High pressure side) 2P
connector
wire 6P connector
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
NO
5-62
main wire harness side No.1 (Red)
– Replace the EMT sensor 2 with a new one
and recheck.
– 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.
JOINT CONNECTOR 1
3 6
G G
Y/R Y/R
, ECM connector B
, joint connector 1
– GO TO STEP 2.
– Temporary failure (code
reappear).
.
EMT SENSOR 2 2P CONNECTOR
MAIN WIRE HARNESS SIDE
SG2
(Green)
G/R
Y/R
, switch
does not
TOH2
(Red)
EOP
SWITCH (HIGH)
G/R
Y/R
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