TOHATSU BFT115A Service Manual page 138

FUEL SYSTEM
2. DLC signal line short circuit inspection
Measure the voltage between the DLC
(Light green) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
3. MIL ON line short circuit inspection
Turn the combination switch OFF.
Disconnect ECM connector A
Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES
NO
4. MAP sensor power line short circuit inspection 1
Turn the combination switch OFF.
Connect ECM connector A
Disconnect the MAP sensor 3P connector
Turn the combination switch ON and check the MIL.
Does the MIL go OFF?
YES
NO
5. MAP sensor power line short circuit inspection 2
Measure the voltage between the MAP sensor 3P
connector
(Brown/Yellow) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
5-20
– GO TO STEP 3.
– Repair short in the Light green wire.
12
– GO TO STEP 4.
– Repair short in the main wire harness
between the ECM and the MIL.
.
12
– Replace the MAP sensor.
– GO TO STEP 5.
main wire harness side No.1
30
– GO TO STEP 6.
– Repair short in the Brown/Yellow wire.
No.4
11
SCS
(Light green)
.
.
30
MAP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
DLC
11
30
VCC1
(Brown/Yellow)