TOHATSU BFT115A Service Manual page 180

FUEL SYSTEM
MIL BLINKS 7 (TP SENSOR)
ECM
THL
5 V
VCC2
SG2
• When the MIL blinks 6, 7, 10, 22, 24, 25, and 27 at
the same time, the ground line (SG2) is open.
• When the MIL blinks 7 and 22 at the same time, the
power line (VCC2) is open.
1. Symptom reproduction test
Turn the combination switch OFF.
Disconnect the TP sensor 3P connector
ECM connector A
and joint connector 2
them.
Clear the DTC (page 5-6).
Start the engine.
Turn the combination switch OFF and connect the
SCS service check connector.
Turn the combination switch ON and check the
number of blinks of the MIL.
Does the MIL blink 7?
YES
NO
2. TP
inspection
Turn the combination switch OFF and disconnect
the TP sensor 3P connector
Turn the combination switch ON.
Measure the voltage between the TP sensor 3P
connector
(Brown/White) terminal and No.3 (Green/Red)
terminal.
Is the measurement within 4.75 – 5.25 V?
YES
NO
5-62
12
R/Bl
Br/W
G/R
13
28
JOINT
CONNECTOR 2
, ECM connector B
12
, and then reconnect
28
– GO TO STEP 2.
– Temporary failure (code
reappear)
sensor power/GND line
20
main wire harness side No.1
20
– GO TO STEP 3.
– Repair open in the Brown/White wire or
Green/Red wire. If the main wire harness
is normal, replace the ECM with a new one
and recheck.
G/R G/R
21
15
,
20
,
13
does not
open circuit
.
SG2
(Green/Red)
TP
SENSOR
20
Br/W
R/Bl
G/R
Bl Black Br Brown
Y Yellow O Orange
Bu Blue Lb Light blue
Lg
G Green Light green
R Red P Pink
W White Gr Gray
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
20
VCC2
(Brown/ White)