TOHATSU BFT250A Service Manual page 165

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DTC 141-2 (ECT SENSOR 3 (EMT SENSOR 2)
VOLTAGE IS TOO HIGH)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EMT sensor 2 2P connector
ECM connector A
joint connector 1
Clear the DTC (page 5-6).
• Continue the procedure if the DTC does not
Turn the combination switch ON.
Measure the EMT sensor 2 voltage using the HDS.
Is the measurement within 0.08 – 4.92 V?
YES
NO
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
, ECM connector B
and then reconnect them.
clear.
– Temporary failure
reappear).
– GO TO STEP 2.
main wire harness side No.1 (Red)
– Replace 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.
,
,
(code does not
.
FUEL SYSTEM
EMT SENSOR 2 2P CONNECTOR
MAIN WIRE HARNESS SIDE
SG2
TOH2
(Green)
(Red)
5-43