TOHATSU BFT 250A, Service Manual

Page: 149 / 639

5-27
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FUEL SYSTEM
DTC 6-2 (ECT SENSOR 1 (EBT SENSOR) VOLTAGE
IS TOO HIGH)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EBT sensor 2P connector
,
ECM connector A , ECM connector B ,
switch wire 6P connector and then reconnect
them.
Clear the DTC (page 5-6).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the EBT sensor voltage using the HDS.
Is the measurement within 0.08 – 4.92 V?
YES – Temporary failure (code does not
reappear).
NO – GO TO STEP 2.
2. EBT sensor signal /GND line open circuit
inspection
Turn the combination switch OFF and disconnect
the EBT sensor 2P connector
.
Turn the combination switch ON.
Measure the voltage between the EBT sensor 2P
connector
main wire harness side No.1 (Red/
White) terminal and No.2 (Green/Red) terminal.
Is the measurement within 4.75 – 5.25 V?
YES – Replace the EBT sensor with a new one
and recheck.
NO – Repair open in the Red/White or Green/
Red wire harness between the ECM and
EBT sensor. If the main wire harness is
correct, replace the ECM with a new one
and recheck.
EBT SENSOR 2P CONNECTOR
MAIN WIRE HARNESS SIDE
TE
(Red/White)
SG2
(Green/Red)