TOHATSU BFT75A Service Manual page 166

dummyhead dummyhead
DTC 6-1, 6-2 (EBT SENSOR VOLTAGE IS TOO LOW OR TOO HIGH)
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
DTC 6-1 (EBT SENSOR VOLTAGE IS TOO LOW)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the EBT sensor 2P connector
ECM connector A
and joint connector 2
them.
Clear the DTC (page 5-5).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the EBT sensor voltage using the Dr.H.
Is the measurement within 0.08 – 4.92 V?
YES
NO
2. EBT sensor signal line short 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
White) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
ECM
5V
29
TE
SG2
28
, ECM connector B
, and then reconnect
– Temporary failure (code
reappear)
– GO TO STEP 2.
main wire harness side No.1 (Red/
– Replace the EBT sensor with a new one
and recheck.
– Repair short in the Red/White wire. If the
main wire is normal, replace the ECM with
a new one and recheck.
EBT
SENSOR
20
R/W R/W
G
G
G
12
21
JOINT CONNCTOR 2
,
,
does not
.
EBT SENSOR 2P CONNECTOR
MAIN WIRE HARNESS SIDE
FUEL SYSTEM
G
24
TE
(Red/White)
5-25