TOHATSU BFT115A Service Manual page 147

DTC 7-1, 7-2 (TP SENSOR VOLTAGE IS TOO LOW OR TOO HIGH)
ECM
12
THL R/Bl
5 V
VCC2 Br/W
SG2
13
JOINT
CONNECTOR 2
DTC 7-1 (TP SENSOR VOLTAGE IS TOO LOW)
• When the DTC code 7-1 and 22-1 or 22-2 are
indicated 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).
• Continue the procedure if the DTC does not
clear.
Turn the combination switch ON.
Measure the TP sensor voltage using the HDS.
Is the measurement within 0.23 – 4.89 V?
YES – Temporary
reappear)
NO – GO TO STEP 2.
2. TP sensor power/signal
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
20
(Brown/White) terminal and No.2 (Red/Black)
terminal.
Is the measurement within 4.75 – 5.25 V?
YES – GO TO STEP 3.
NO – • Repair open in the Brown/White wire.
• Repair open in the Red/Black wire.
• If the main wire harness is normal,
replace the ECM with a new one, and
recheck.
G/R
G/R
28
21
15
, ECM connector B
12
, and then reconnect
28
failure (code does
line open circuit
.
20
main wire harness side No.1
Br/W
R/Bl
G/R
G/R
Bl Black
Y Yellow
Bu Blue
G Green
R Red
W White
,
20
,
13
not
TP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
THL
(Red/Black)
FUEL SYSTEM
TP
SENSOR
20
Br Brown
O Orange
Lb Light blue
Lg
Light green
P Pink
Gr Gray
20
VCC2
(Brown/ White)
5-29