TOHATSU BFT 250A, Service Manual

Page: 177 / 639

5-55
dummyhead dummyhead
FUEL SYSTEM
3. TP sensor signal line open/short circuit
inspection
Turn the combination switch OFF.
Disconnect the ECM connector A
.
Check for an open or short in the wire between the
TP sensor 3P connector
main wire harness
side No.2 (Red/Black) terminal and ECM connector
A
main wire harness side No.7 (Red/Black)
terminal.
Is the signal line correct?
YES – Replace the throttle body with a new one
and recheck.
NO – Repair open or short in the main wire
harness between the ECM and TP sensor.
MIL BLINKS 8 TIMES (CMP 1 SENSOR)
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the CMP sensor 4P connector
,
ECM connector A and then reconnect them.
Reset the ECM (page 5-6).
Start the engine.
Turn the combination switch OFF and connect the
SCS service connector.
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 8 times?
YES – GO TO STEP 2.
NO – Temporary failure (code does not
reappear).
Bl: Black
Y: Yellow
Bu: Blue
G: Green
R: Red
W: White Br: Brown
O: Orange
Lb: Light blue
Lg: Light green
P: Pink
Gr: Gray
TDC1P
ECM
CMP
SENSOR 1
R
1
25
TDC1M
24
G
R
G
R
G
2