TOHATSU BFT75A Service Manual page 176

dummyhead dummyhead
DTC 22-1, 22-2 (EOP SENSOR VOLTAGE TOO LOW OR TOO HIGH)
ECM
5V
5V
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 22-1 (EOP 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 EOP sensor 3P 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 EOP sensor voltage using the Dr.H.
Is the measurement within 0.5– 4.5 V?
YES
NO
2. EOP sensor signal line short circuit inspection
Turn the combination switch OFF and disconnect
the EOP sensor 3P connector
Turn the combination switch ON.
Measure the voltage between the EOP sensor 3P
connector
(Yellow/Red) terminal and engine ground.
Is the measurement within 4.75 – 5.25 V?
YES
NO
29
POIL Y/R
VCC2
Bu
SG2 G
28
, ECM connector B
, and then reconnect
– Temporary failure
reappear)
– GO TO STEP 2.
main wire harness side No.2
– GO TO STEP 3.
– Repair short in the Yellow/Red wire. If the
main wire harness is normal, replace the
ECM with a new one and recheck.
G G
12
21
23
JOINT CONNECTOR 2
,
,
(code does not
.
FUEL SYSTEM
EOP
SENSOR
22
Bu
Y/R
G
EOP SENSOR 3P CONNECTOR
MAIN WIRE HARNESS SIDE
POIL
(Yellow/Red)
5-35