TOHATSU BFT250A Service Manual page 163

dummyhead dummyhead
DTC 140-2 (ECT SENSOR 2 (EMT SENSOR 1)
VOLTAGE IS TOO HIGH)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EMT sensor 1 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 1 voltage using the HDS.
Is the measurement within 0.08 – 4.92 V?
YES
NO
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
, ECM connector B
and then reconnect them.
clear.
– Temporary failure
reappear).
– GO TO STEP 2.
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.
,
,
(code does not
.
FUEL SYSTEM
EMT SENSOR 1 2P CONNECTOR
MAIN WIRE HARNESS SIDE
SG2
(Green)
TOH1
(Red/Black)
5-41