TOHATSU BFT250A Service Manual page 183

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2. EMT sensor 1 signal /GND line open circuit
inspection
Turn the combination switch OFF and disconnect
the EMT sensor 1 2P connector
Turn the combination switch ON.
Measure the voltage between the EMT sensor 1 2P
connector
Black) terminal and No.2 (Green) terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
MIL BLINKS 25 TIMES (2 LONG BLINKS AND 5 SHORT BLINK) EMT SENSOR
2
ECM
5 V
TOH2
SG2
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EMT sensor 2 2P connector
ECM connector A
joint connector 1
Reset the ECM (page 5-6).
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 25 times?
YES
NO
main wire harness side No.1 (Red/
– Replace the EMT sensor 1 with a new one
and recheck.
– Repair open in the Red/Black or Green
wire harness between the ECM and EMT
sensor 1. If the main wire harness is
correct, replace the ECM with a new one
and recheck.
R
G
JOINT CONNECTOR 1
, ECM connector B
and then reconnect them.
– GO TO STEP 2.
– Temporary failure (code
reappear).
.
EMT SENSOR 1 2P CONNECTOR
MAIN WIRE HARNESS SIDE
3 1
,
,
does not
FUEL SYSTEM
SG2 TOH1
(Green) (Red/Black)
EMT SENSOR 2
R
G
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
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